EIDP Inc
EIDP IncActive Patents
0
Total Holdings
768
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| WO1992004410A1 | Films containing polyhydroxy acids and a compatibilizer | Expired / Lapsed | 1991-09-09 | — | 0 | Details |
| WO1989001320A1 | Soft tissue prosthesis | Expired / Lapsed | 1988-08-15 | — | 0 | Details |
| DE1132220B | Glaze composition containing metal particles for the produc… | Expired / Lapsed | 1959-10-28 | — | 0 | Details |
| GB783555A | Improvements in or relating to laminated structures and met… | Expired / Lapsed | 1955-03-09 | — | 0 | Details |
| GB758461A | Improvements relating to the surface treatment of polyethyl… | Expired / Lapsed | 1953-11-13 | — | 0 | Details |
| GB712950A | A process for melt spinning polyethylene terephthalate fibr… | Expired / Lapsed | 1952-06-18 | — | 0 | Details |
| GB711279A | Elastic linear copolyesters and process of making them | Expired / Lapsed | 1951-03-06 | — | 0 | Details |
| GB660398A | Process for obtaining laminated products | Expired / Lapsed | 1949-03-28 | — | 0 | Details |
| GB596007A | Improvements in or relating to resinous compositions | Expired / Lapsed | 1945-07-13 | — | 0 | Details |
| GB595290A | Adhesive compositions | Expired / Lapsed | 1945-07-02 | — | 0 | Details |
| GB588697A | New and improved process for the production of shaped artic… | Expired / Lapsed | 1945-03-05 | — | 0 | Details |
| GB576363A | Improvements in or relating to the production of derivative… | Expired / Lapsed | 1943-06-02 | — | 0 | Details |
| GB550837A | Process for the preparation of condensation products of hyd… | Expired / Lapsed | 1941-07-23 | — | 0 | Details |
| US5387474A | Green ceramic composite and method for making such composite | Expired / Lapsed | 1993-08-06 | 1995-02-07 | 9 | Details |
| US5278256A | Rapidly degradable poly (hydroxyacid) compositions | Expired / Lapsed | 1992-09-16 | 1994-01-11 | 23 | Details |
| US5192308A | Vascular prosthesis with an elastomer coating | Expired / Lapsed | 1991-04-19 | 1993-03-09 | 11 | Details |
| US5055069A | Connectors with ground structure | Expired / Lapsed | 1990-06-08 | 1991-10-08 | 44 | Details |
| US4958038A | Organotitanium compositions useful for cross-linking | Expired / Lapsed | 1989-03-20 | 1990-09-18 | 33 | Details |
| US4824618A | Coextrusion blowmolding process | Expired / Lapsed | 1987-12-21 | 1989-04-25 | 12 | Details |
| US4766182A | Polylactide compositions | Expired / Lapsed | 1987-10-15 | 1988-08-23 | 7 | Details |
| US4725481A | Vapor-permeable, waterproof bicomponent structure | Expired / Lapsed | 1987-02-24 | 1988-02-16 | 32 | Details |
| US4623481A | Conductive primers | Expired / Lapsed | 1984-09-21 | 1986-11-18 | 7 | Details |
| US4612237A | Hydraulically entangled PTFE/glass filter felt | Expired / Lapsed | 1985-12-13 | 1986-09-16 | 32 | Details |
| US4609479A | Organic titanium compositions and their use as cross-linkers | Expired / Lapsed | 1984-10-09 | 1986-09-02 | 46 | Details |
| US4507119A | Sterile docking process, apparatus and system | Expired / Lapsed | 1982-07-06 | 1985-03-26 | 35 | Details |
| US4476293A | Polymeric carbonate diols of copolyether glycols and polyur… | Expired / Lapsed | 1983-01-24 | 1984-10-09 | 5 | Details |
| US4463141A | Polyether carbonate diols and polyurethanes prepared theref… | Expired / Lapsed | 1983-01-24 | 1984-07-31 | 7 | Details |
| US4444817A | Laminar articles of polyolefin and a condensation polymer | Expired / Lapsed | 1982-09-29 | 1984-04-24 | 16 | Details |
| US4443215A | Sterile docking process, apparatus and system | Expired / Lapsed | 1982-07-06 | 1984-04-17 | 30 | Details |
| US4361619A | Filter of poly(tetrafluoroethylene) and glass fibers | Expired / Lapsed | 1981-05-20 | 1982-11-30 | 12 | Details |
| US4267288A | Epoxy-urethanes based on copolyesters | Expired / Lapsed | 1979-07-23 | 1981-05-12 | 12 | Details |
| US4261847A | Refrigerant compositions | Expired / Lapsed | 1979-06-25 | 1981-04-14 | 3 | Details |
| US4259472A | Two component oligomeric phosphate/isocyanate composition | Expired / Lapsed | 1980-01-04 | 1981-03-31 | 13 | Details |
| US4208465A | Clear coat/color coat finish containing an antioxidant and … | Expired / Lapsed | 1978-05-03 | 1980-06-17 | 54 | Details |
| US4188469A | Composition of hydrophilic fluoropolymers with fibrous matt… | Expired / Lapsed | 1978-04-11 | 1980-02-12 | 3 | Details |
| US4178319A | High solids coating composition with oligomeric hydroxyphos… | Expired / Lapsed | 1978-12-26 | 1979-12-11 | 13 | Details |
| US4178324A | High solids coating composition with oligomeric hydroxy pho… | Expired / Lapsed | 1978-12-26 | 1979-12-11 | 18 | Details |
| US4128535A | Method for reducing color formation in polyesters | Expired / Lapsed | 1977-09-19 | 1978-12-05 | 4 | Details |
| US4055201A | Expansible fabric for fluid dispensing application | Expired / Lapsed | 1976-08-16 | 1977-10-25 | 18 | Details |
| US4052866A | High-recovery force warp knit stretch fabric with lengthwis… | Expired / Lapsed | 1976-09-27 | 1977-10-11 | 6 | Details |
| US4048148A | Polyazomethine fibers and films | Expired / Lapsed | 1976-03-19 | 1977-09-13 | 24 | Details |
| US4042657A | Process for the automatic inspection of blow-molded articles | Expired / Lapsed | 1976-02-20 | 1977-08-16 | 7 | Details |
| US3980611A | Filled thermoplastic films | Expired / Lapsed | 1973-01-18 | 1976-09-14 | 19 | Details |
| US3976720A | Polyamide/polyolefin plastic graft copolymers | Expired / Lapsed | 1974-11-13 | 1976-08-24 | 17 | Details |
| US3900689A | Substrates treated with chromium(iii) complexes to increase… | Expired / Lapsed | 1973-06-25 | 1975-08-19 | 34 | Details |
| US3900654A | Composite polymeric electric heating element | Expired / Lapsed | 1972-12-11 | 1975-08-19 | 24 | Details |
| US3896204A | Melt-extrusion of acrylonitrile polymers into filaments | Expired / Lapsed | 1972-10-02 | 1975-07-22 | 11 | Details |
| US3886066A | Tannin treatment for non-porous semipermeable membranes | Expired / Lapsed | 1972-11-06 | 1975-05-27 | 20 | Details |
| US3843890A | Optical-electrical web inspection system | Expired / Lapsed | 1973-07-27 | 1974-10-22 | 10 | Details |
| US3832830A | Permeation separation device | Expired / Lapsed | 1972-09-18 | 1974-09-03 | 17 | Details |
| US3822723A | Apparatus for controlling addition of replenishment solutio… | Expired / Lapsed | 1973-05-10 | 1974-07-09 | 20 | Details |
| US3821051A | Process for bonding rib structures of thermoplastic resin | Expired / Lapsed | 1970-12-16 | 1974-06-28 | 6 | Details |
| US3808303A | Ether treatment of nitrogen-containing polymer membranes | Expired / Lapsed | 1971-12-30 | 1974-04-30 | 0 | Details |
| US3804423A | Shaft seal throttle bushing | Expired / Lapsed | 1971-11-16 | 1974-04-16 | 7 | Details |
| US3801401A | Apparatus for making convolute wound structures | Expired / Lapsed | 1971-09-24 | 1974-04-02 | 32 | Details |
| US3786127A | Stretching polyethylene terephthalate film in a shortened s… | Expired / Lapsed | 1971-01-28 | 1974-01-15 | 0 | Details |
| US3784399A | Films of fluorinated polymer containing sulfonyl groups wit… | Expired / Lapsed | 1971-09-08 | 1974-01-08 | 16 | Details |
| US3773449A | Apparatus for producing continuous round jacketed lightguid… | Expired / Lapsed | 1971-09-29 | 1973-11-20 | 3 | Details |
| US3773919A | Polylactide-drug mixtures | Expired / Lapsed | 1970-10-08 | 1973-11-20 | 0 | Details |
| US3770155A | Dually sealable, non-leaking vial for shipping radioactive … | Expired / Lapsed | 1971-10-19 | 1973-11-06 | 7 | Details |
| US3758633A | Crosslinking agents and flow control agents powdered coatin… | Expired / Lapsed | 1971-08-16 | 1973-09-11 | 3 | Details |
| US3736311A | Process for improving the thermal stability of polyvinyl al… | Expired / Lapsed | 1972-03-02 | 1973-05-29 | 0 | Details |
| US3733309A | Biaxially oriented poly(ethylene terephthalate)bottle | Expired / Lapsed | 1970-11-30 | 1973-05-15 | 0 | Details |
| US3702658A | Permeation separation apparatus | Expired / Lapsed | 1971-02-24 | 1972-11-14 | 0 | Details |
| US3692569A | Surface-activated fluorocarbon objects | Expired / Lapsed | 1970-02-12 | 1972-09-19 | 0 | Details |
| US3684572A | Electroless nickel plating process for nonconductors | Expired / Lapsed | 1970-07-13 | 1972-08-15 | 0 | Details |
| US3663266A | Moisture responsive synthetic microporous sheet material | Expired / Lapsed | 1970-05-21 | 1972-05-16 | 12 | Details |
| US3660281A | Permeation separation membranes | Expired / Lapsed | 1970-05-06 | 1972-05-02 | 0 | Details |
| FR2104349A5 | FR2104349A5 - - Google Patents | Expired / Lapsed | 1971-08-13 | 1972-04-14 | 0 | Details |
| US3639123A | Double-transfer process for photohardenable images | Expired / Lapsed | 1969-10-13 | 1972-02-01 | 8 | Details |
| US3616928A | Permeation separation device for separating fluids | Expired / Lapsed | 1969-10-02 | 1971-11-02 | 2 | Details |
| US3593074A | Apparatus and process | Expired / Lapsed | 1969-12-22 | 1971-07-13 | 4 | Details |
| US3581343A | Tubing die extrausion coating apparatus | Expired / Lapsed | 1968-10-25 | 1971-06-01 | 0 | Details |
| US3578481A | Suede-like sheet material of styrene/butadiene polymer cont… | Expired / Lapsed | 1968-06-18 | 1971-05-11 | 0 | Details |
| US3573476A | Apparatus for determining reflective color index of fibrous… | Expired / Lapsed | 1968-11-20 | 1971-04-06 | 9 | Details |
| US3567632A | Permselective,aromatic,nitrogen-containing polymeric membra… | Expired / Lapsed | 1969-08-08 | 1971-03-02 | 0 | Details |
| US3565979A | Flash spinning | Expired / Lapsed | 1968-09-18 | 1971-02-23 | 0 | Details |
| US3563892A | Textile-treating composition and process | Expired / Lapsed | 1967-06-12 | 1971-02-16 | 0 | Details |
| US3553331A | Pharmaceutical compositions and methods utilizing 4-alkyl-1… | Expired / Lapsed | 1969-02-28 | 1971-01-05 | 0 | Details |
| US3542028A | Flushable sanitary napkins | Expired / Lapsed | 1968-06-19 | 1970-11-24 | 0 | Details |
| US3528553A | Permeation separation device for separating fluids | Expired / Lapsed | 1968-11-26 | 1970-09-15 | 0 | Details |
| US3526001A | Permeation separation device for separating fluids and proc… | Expired / Lapsed | 1968-11-26 | 1970-08-25 | 0 | Details |
| US3507683A | Method for applying heat-sealable polyamic acid,polyamide-i… | Expired / Lapsed | 1967-06-22 | 1970-04-21 | 0 | Details |
| US3504016A | Fluorinated polyesters | Expired / Lapsed | 1969-02-28 | 1970-03-31 | 0 | Details |
| US3503515A | Permeation separatory apparatus | Expired / Lapsed | 1968-10-03 | 1970-03-31 | 0 | Details |
| US3492151A | Metallizing process | Expired / Lapsed | 1966-04-06 | 1970-01-27 | 0 | Details |
| US3492250A | Closed cell foam | Expired / Lapsed | 1963-05-21 | 1970-01-27 | 0 | Details |
| US3485706A | Textile-like patterned nonwoven fabrics and their production | Expired / Lapsed | 1968-01-18 | 1969-12-23 | 0 | Details |
| US3485709A | Acrylic nonwoven fabric of high absorbency | Expired / Lapsed | 1966-05-16 | 1969-12-23 | 0 | Details |
| US3475204A | Polyester tire cord lubricant | Expired / Lapsed | 1967-09-18 | 1969-10-28 | 0 | Details |
| US3473382A | Base line slope compensating circuit | Expired / Lapsed | 1967-01-10 | 1969-10-21 | 0 | Details |
| US3469001A | Process for making polyester cord for no-reset v-belts | Expired / Lapsed | 1965-10-08 | 1969-09-23 | 0 | Details |
| US3467142A | Flow device and method of manufacture thereof | Expired / Lapsed | 1967-08-08 | 1969-09-16 | 0 | Details |
| US3461199A | Process for improving dimensional stability of tensilized p… | Expired / Lapsed | 1966-05-03 | 1969-08-12 | 0 | Details |
| US3442002A | Method of manufacture of fluid separation apparatus | Expired / Lapsed | 1965-12-22 | 1969-05-06 | 0 | Details |
| US3433008A | Bulked yarn | Expired / Lapsed | 1965-11-19 | 1969-03-18 | 0 | Details |
| US3423809A | Process for forming differential shrinkage bulked yarn | Expired / Lapsed | 1967-11-15 | 1969-01-28 | 0 | Details |
| US3418242A | Refrigerant composition | Expired / Lapsed | 1965-05-18 | 1968-12-24 | 0 | Details |
| US3412547A | Elastic composite yarn and preparation thereof | Expired / Lapsed | 1966-06-27 | 1968-11-26 | 0 | Details |
| US3407156A | Weatherable transparent coating composition for wood substr… | Expired / Lapsed | 1964-06-03 | 1968-10-22 | 2 | Details |
| US3398016A | Coating and drying thermally sensitive thermoplastic film | Expired / Lapsed | 1964-07-10 | 1968-08-20 | 0 | Details |
| US3387326A | Apparatus for charging and spreading a web | Expired / Lapsed | 1964-06-04 | 1968-06-11 | 0 | Details |
| US3384531A | Flattened ultra-microcellular structure and method for maki… | Expired / Lapsed | 1963-11-27 | 1968-05-21 | 0 | Details |
| US3382206A | Pencil receptive film | Expired / Lapsed | 1965-09-03 | 1968-05-07 | 0 | Details |
| US3380876A | Bonding thermoplastic materials to substrates with colloida… | Expired / Lapsed | 1967-06-20 | 1968-04-30 | 0 | Details |
| US3378744A | Slip detection circuit | Expired / Lapsed | 1965-10-19 | 1968-04-16 | 0 | Details |
| US3375347A | Heater control circuit | Expired / Lapsed | 1965-06-10 | 1968-03-26 | 0 | Details |
| US3356542A | Cobalt-nickel base alloys containing chromium and molybdenum | Expired / Lapsed | 1967-04-10 | 1967-12-05 | 1 | Details |
| US3355982A | Apparatus for simulating daylight and artifical light | Expired / Lapsed | 1963-10-02 | 1967-12-05 | 0 | Details |
| US3341394A | Sheets of randomly distributed continuous filaments | Expired / Lapsed | 1966-12-21 | 1967-09-12 | 2 | Details |
| US3339341A | Fluid separation process and apparatus | Expired / Lapsed | 1965-12-22 | 1967-09-05 | 1 | Details |
| US3340222A | Hydrofluorocarbon polymer filmforming composition | Expired / Lapsed | 1963-06-28 | 1967-09-05 | 2 | Details |
| US3326677A | Process of dispersion-hardening of iron-group base metals | Expired / Lapsed | 1966-05-12 | 1967-06-20 | 2 | Details |
| US3325342A | Crystalline polyalkylene isophthalamide filaments with voids | Expired / Lapsed | 1963-03-19 | 1967-06-13 | 2 | Details |
| US3319515A | Interferometric optical phase discrimination apparatus | Expired / Lapsed | 1963-08-27 | 1967-05-16 | 2 | Details |
| US3318856A | Process of gelling polyvinyl alcohol | Expired / Lapsed | 1964-04-03 | 1967-05-09 | 2 | Details |
| US3317285A | Composition comprising iron-group metal and particulate ref… | Expired / Lapsed | 1965-01-12 | 1967-05-02 | 2 | Details |
| US3310400A | Process of making metal powder compositions wherein some me… | Expired / Lapsed | 1964-06-22 | 1967-03-21 | 2 | Details |
| US3295166A | Apparatus for extruding polytetrafluoroethylene tubing and … | Expired / Lapsed | 1963-07-24 | 1967-01-03 | 2 | Details |
| US3282771A | Polyvinyl chloride film adhered to a self-bonded web of con… | Expired / Lapsed | 1962-12-17 | 1966-11-01 | 0 | Details |
| US3278639A | Process for grafting unsaturated monomers onto polyamides | Expired / Lapsed | 1963-03-18 | 1966-10-11 | 2 | Details |
| US3275988A | Programmed batch sequence controller | Expired / Lapsed | 1961-08-21 | 1966-09-27 | 2 | Details |
| US3271943A | Process for stabilizing bulked yarns and product thereof | Expired / Lapsed | 1963-12-30 | 1966-09-13 | 2 | Details |
| US3266969A | Tufting process and products having tufted structures | Expired / Lapsed | 1962-09-10 | 1966-08-16 | 2 | Details |
| US3261088A | Process for explosively bonding metal layers | Expired / Lapsed | 1963-01-23 | 1966-07-19 | 2 | Details |
| FR1455991A | heat exchanger and its manufacturing process | Expired / Lapsed | 1965-08-11 | 1966-05-20 | 0 | Details |
| US3246764A | Fluid separation | Expired / Lapsed | 1961-11-30 | 1966-04-19 | 2 | Details |
| US3246061A | Process for preparing biaxially oriented polypropylene film | Expired / Lapsed | 1962-08-17 | 1966-04-12 | 2 | Details |
| US3240765A | Thiocarbonyl fluorides and their polymers | Expired / Lapsed | 1961-05-01 | 1966-03-15 | 4 | Details |
| US3238055A | Poromeric material and method of making same | Expired / Lapsed | 1963-04-12 | 1966-03-01 | 3 | Details |
| US3235426A | Method of rendering thermoplastic resins receptive to coati… | Expired / Lapsed | 1961-08-01 | 1966-02-15 | 2 | Details |
| US3231449A | Apparatus for sealing thermoplastic material | Expired / Lapsed | 1964-07-14 | 1966-01-25 | 0 | Details |
| US3216187A | High strength polyethylene terephthalate yarn | Expired / Lapsed | 1963-12-27 | 1965-11-09 | 2 | Details |
| US3208875A | Method of making vapor permeable sheet materials | Expired / Lapsed | 1962-01-05 | 1965-09-28 | 2 | Details |
| US3201506A | Addition of magnesium silicate to a polyester in the manufa… | Expired / Lapsed | 1962-08-09 | 1965-08-17 | 2 | Details |
| US3201572A | Control method and apparatus | Expired / Lapsed | 1961-05-08 | 1965-08-17 | 2 | Details |
| US3194793A | Polyurethanes cured with mixtures of aromatic primary and s… | Expired / Lapsed | 1961-12-13 | 1965-07-13 | 2 | Details |
| US3190339A | Pneumatic tire | Expired / Lapsed | 1963-01-24 | 1965-06-22 | 2 | Details |
| US3190766A | Method of making vapor permeable sheet materials | Expired / Lapsed | 1961-10-31 | 1965-06-22 | 2 | Details |
| US3186155A | Textile product of synthetic organic filaments having rando… | Expired / Lapsed | 1963-06-06 | 1965-06-01 | 1 | Details |
| US3180727A | Composition containing a dispersionhardening phase and a pr… | Expired / Lapsed | 1962-02-20 | 1965-04-27 | 2 | Details |
| CA703377A | Monomer-polymer acrylic sirups | Expired / Lapsed | — | 1965-02-09 | 0 | Details |
| US3166435A | Drying process for hydrophilic films | Expired / Lapsed | 1961-11-28 | 1965-01-19 | 2 | Details |
| US3161537A | Process for increasing the scratch resistance of glass | Expired / Lapsed | 1961-12-22 | 1964-12-15 | 2 | Details |
| US3145446A | Process for producing tufted structures | Expired / Lapsed | 1962-11-21 | 1964-08-25 | 2 | Details |
| US3145133A | Polyamide filament | Expired / Lapsed | 1962-12-21 | 1964-08-18 | 2 | Details |
| US3140537A | Explosive welding process | Expired / Lapsed | 1961-06-30 | 1964-07-14 | 2 | Details |
| US3136680A | Polytetrafluoroethylene copper laminate | Expired / Lapsed | 1960-08-15 | 1964-06-09 | 2 | Details |
| US3121762A | Method and apparatus for producing regenerated cellulose fi… | Expired / Lapsed | 1961-07-17 | 1964-02-18 | 2 | Details |
| US3118846A | Composition comprising tetrafluoroethylene polymer and cell… | Expired / Lapsed | 1956-12-24 | 1964-01-21 | 2 | Details |
| US3117173A | Process of preparing substantially oriented filaments havin… | Expired / Lapsed | 1962-03-19 | 1964-01-07 | 2 | Details |
| US3113936A | Fluorothiacyl chlorides and polymers thereof | Expired / Lapsed | 1959-08-17 | 1963-12-10 | 2 | Details |
| US3110630A | Electrolytic cell | Expired / Lapsed | 1960-08-11 | 1963-11-12 | 2 | Details |
| US3110742A | Polyalkyl benzene manufacture | Expired / Lapsed | 1960-07-20 | 1963-11-12 | 2 | Details |
| US3107198A | Laminated prepared with werner complex coating on an alumin… | Expired / Lapsed | 1959-12-22 | 1963-10-15 | 2 | Details |
| US3100925A | Apparatus for compressional finishing of fabrics | Expired / Lapsed | 1960-12-02 | 1963-08-20 | 2 | Details |
| US3101276A | Process for grafting polymers to cellulose substrates | Expired / Lapsed | 1957-07-08 | 1963-08-20 | 2 | Details |
| US3100721A | Process for producing microporous films and coatings | Expired / Lapsed | 1961-02-21 | 1963-08-13 | 2 | Details |
| US3099262A | Physiologic fluid pressure sensing head | Expired / Lapsed | 1962-06-21 | 1963-07-30 | 2 | Details |
| US3092874A | Production of thermoplastic polymeric film | Expired / Lapsed | 1961-07-17 | 1963-06-11 | 1 | Details |
| US3088173A | Process for preparing oriented polymeric linear terephthala… | Expired / Lapsed | 1961-06-02 | 1963-05-07 | 2 | Details |
| US3087435A | Pumping process | Expired / Lapsed | 1961-03-31 | 1963-04-30 | 2 | Details |
| US3079641A | Process for molding a polyurethane foam by shaping it witho… | Expired / Lapsed | 1959-02-27 | 1963-03-05 | 2 | Details |
| US3073953A | Process for producing images | Expired / Lapsed | 1959-07-29 | 1963-01-15 | 2 | Details |
| US3069726A | Process for preparing articles having sections with metalli… | Expired / Lapsed | 1961-05-24 | 1962-12-25 | 0 | Details |
| US3069396A | Polymers of polyfluorothioketone | Expired / Lapsed | 1959-02-09 | 1962-12-18 | 2 | Details |
| US3069292A | Composition comprising particles of refractory oxide, coate… | Expired / Lapsed | 1958-07-16 | 1962-12-18 | 2 | Details |
| US3067483A | Sheet material and process of making same | Expired / Lapsed | 1959-08-24 | 1962-12-11 | 2 | Details |
| US3067482A | Sheet material and process of making same | Expired / Lapsed | 1959-08-24 | 1962-12-11 | 2 | Details |
| US3062750A | Treatment of zinc sulfide phosphors | Expired / Lapsed | 1959-08-19 | 1962-11-06 | 1 | Details |
| US3059238A | Equipment performance recorder | Expired / Lapsed | 1960-02-25 | 1962-10-16 | 0 | Details |
| US3055080A | Apparatus for fluid treatment of tow and yarn bundles | Expired / Lapsed | 1960-07-19 | 1962-09-25 | 0 | Details |
| US3052573A | Resistor and resistor composition | Expired / Lapsed | 1960-03-02 | 1962-09-04 | 2 | Details |
| US3052376A | Dispensing apparatus | Expired / Lapsed | 1959-06-03 | 1962-09-04 | 0 | Details |
| US3039895A | Textile | Expired / Lapsed | 1960-03-29 | 1962-06-19 | 2 | Details |
| US3038870A | Process of preparing and extruding an aqueous gel of polyte… | Expired / Lapsed | 1956-12-27 | 1962-06-12 | 0 | Details |
| US3037953A | Concentration of aqueous colloidal dispersions of polytetra… | Expired / Lapsed | 1961-04-26 | 1962-06-05 | 2 | Details |
| US3036188A | Heating apparatus | Expired / Lapsed | 1959-02-24 | 1962-05-22 | 0 | Details |
| US3028627A | Spinneret pack assembly | Expired / Lapsed | 1959-04-10 | 1962-04-10 | 0 | Details |
| US3028366A | Catalytic process for the preparation of substantially colo… | Expired / Lapsed | 1956-06-26 | 1962-04-03 | 2 | Details |
| US3024110A | Processes for producing dispersions of refractory metal oxi… | Expired / Lapsed | 1958-07-21 | 1962-03-06 | 2 | Details |
| US3019103A | Process for producing sintered metals with dispersed oxides | Expired / Lapsed | 1957-11-04 | 1962-01-30 | 2 | Details |
| US3017740A | Process for core-spinning smooth elastic yarn | Expired / Lapsed | 1958-12-24 | 1962-01-23 | 0 | Details |
| US3016599A | Microfiber and staple fiber batt | Expired / Lapsed | 1954-06-01 | 1962-01-16 | 0 | Details |
| US3015604A | Porous polytetrafluoroethylene article containing glass mic… | Expired / Lapsed | 1957-05-02 | 1962-01-02 | 0 | Details |
| US3014818A | Electrically conducting articles and process of making same | Expired / Lapsed | 1957-12-09 | 1961-12-26 | 2 | Details |
| US3013936A | Synthetic fiber papers | Expired / Lapsed | 1958-01-07 | 1961-12-19 | 2 | Details |
| US3012993A | Branched chain polyurethane polymers | Expired / Lapsed | 1958-04-21 | 1961-12-12 | 2 | Details |
| US3010918A | Chemical compounds | Expired / Lapsed | 1958-05-26 | 1961-11-28 | 2 | Details |
| US3003884A | Fresh meat package and method | Expired / Lapsed | 1958-03-10 | 1961-10-10 | 2 | Details |
| US3000757A | Process for coating substrates with a vapor permeable polym… | Expired / Lapsed | 1957-01-28 | 1961-09-19 | 2 | Details |
| US2999296A | Novel filaments and fabrics | Expired / Lapsed | 1957-03-25 | 1961-09-12 | 1 | Details |
| US2997448A | Molded fluorocarbon polymer product and method of preparing… | Expired / Lapsed | 1958-09-24 | 1961-08-22 | 3 | Details |
| US2995779A | Treatment for polymeric film to restrain gauge variation | Expired / Lapsed | 1959-03-12 | 1961-08-15 | 2 | Details |
| US2990398A | Hydroxyethylation of polyvinyl alcohol | Expired / Lapsed | 1958-07-31 | 1961-06-27 | 2 | Details |
| US2989433A | Process of preparing laminated structures | Expired / Lapsed | 1957-06-18 | 1961-06-20 | 2 | Details |
| US2987765A | Process and apparatus for forming tubes | Expired / Lapsed | 1960-07-07 | 1961-06-13 | 0 | Details |
| US2987767A | Fluid forming of plastics | Expired / Lapsed | 1959-03-05 | 1961-06-13 | 0 | Details |
| US2988524A | Copolymer of methyl methacrylate, alkyd resin and modified … | Expired / Lapsed | 1958-06-19 | 1961-06-13 | 3 | Details |
| US2981978A | Process of shrinking solid polymethylene terephthalate with… | Expired / Lapsed | 1955-08-30 | 1961-05-02 | 2 | Details |
| US2979777A | Tubular film stretching process | Expired / Lapsed | 1958-11-06 | 1961-04-18 | 0 | Details |
| US2977243A | Coating process | Expired / Lapsed | 1958-10-02 | 1961-03-28 | 2 | Details |
| US2972529A | Metal oxide-metal composition | Expired / Lapsed | 1958-05-12 | 1961-02-21 | 3 | Details |
| US2970066A | Process of treating polymeric structures and product thereof | Expired / Lapsed | 1959-08-31 | 1961-01-31 | 2 | Details |
| US2968575A | Stable polyurethane latex and process of making same | Expired / Lapsed | 1954-05-21 | 1961-01-17 | 2 | Details |
| US2964992A | Differential refractometer cell | Expired / Lapsed | 1956-02-07 | 1960-12-20 | 0 | Details |
| US2962470A | Linear polyester-polyurethane product and process of prepar… | Expired / Lapsed | 1958-01-09 | 1960-11-29 | 2 | Details |
| US2955056A | Polyurethane foams coated with a polyurethane elastomer | Expired / Lapsed | 1959-02-27 | 1960-10-04 | 2 | Details |
| US2949394A | Sheet material | Expired / Lapsed | 1954-03-17 | 1960-08-16 | 2 | Details |
| US2948611A | Photopolymerizable compositions, elements, and processes | Expired / Lapsed | 1957-10-30 | 1960-08-09 | 2 | Details |
| US2948842A | Transducer | Expired / Lapsed | 1955-12-27 | 1960-08-09 | 0 | Details |
| US2946763A | Novel perfluorocarbon polymers | Expired / Lapsed | 1957-03-29 | 1960-07-26 | 2 | Details |
| US2945958A | Light collector | Expired / Lapsed | 1956-10-25 | 1960-07-19 | 0 | Details |
| US2941911A | Method of forming continuous structures of polytetrafluoroe… | Expired / Lapsed | 1955-11-15 | 1960-06-21 | 1 | Details |
| US2933417A | One-side film coating process | Expired / Lapsed | 1958-03-12 | 1960-04-19 | 2 | Details |
| US2933154A | Process for filtering with polytetrafluoroethylene fibers | Expired / Lapsed | 1957-07-31 | 1960-04-19 | 2 | Details |
| US2931091A | Crimped textile filament | Expired / Lapsed | 1954-02-26 | 1960-04-05 | 2 | Details |
| US2929800A | Polytetramethylene ether polyurethane polymers | Expired / Lapsed | 1953-06-30 | 1960-03-22 | 2 | Details |
| US2926389A | Process for modifying foam structures | Expired / Lapsed | 1958-03-04 | 1960-03-01 | 2 | Details |
| US2924540A | Ceramic composition and article | Expired / Lapsed | 1958-05-23 | 1960-02-09 | 1 | Details |
| US2923673A | Preparation of photopolymerizable compounds | Expired / Lapsed | 1958-05-21 | 1960-02-02 | 2 | Details |
| US2921927A | Process for curing a sulfur-curable polyalkyleneether polyu… | Expired / Lapsed | 1957-07-26 | 1960-01-19 | 2 | Details |
| US2920980A | Finishing fabrics | Expired / Lapsed | 1956-03-28 | 1960-01-12 | 2 | Details |
| US2920352A | Process of casting and stretching film | Expired / Lapsed | 1954-04-23 | 1960-01-12 | 2 | Details |
| US2918391A | Resinous coating composition, method of preparing and metho… | Expired / Lapsed | 1956-10-11 | 1959-12-22 | 1 | Details |
| US2917489A | Process for curing liquid urethane polymers | Expired / Lapsed | 1956-03-16 | 1959-12-15 | 2 | Details |
| US2909449A | Vinylidene chloride copolymer coating compositions | Expired / Lapsed | 1956-02-03 | 1959-10-20 | 1 | Details |
| US2906658A | Method for the preparation of cementable fluorocarbon polym… | Expired / Lapsed | 1958-02-05 | 1959-09-29 | 1 | Details |
| US2906642A | Process for forming composite cellular structures | Expired / Lapsed | 1957-01-22 | 1959-09-29 | 2 | Details |
| US2906738A | Process of curing polymers of tetrahydrofuran | Expired / Lapsed | 1956-11-19 | 1959-09-29 | 2 | Details |
| US2904844A | Process for embossing polyvinyl acetal sheets | Expired / Lapsed | 1956-02-10 | 1959-09-22 | 2 | Details |
| US2905585A | Self-bonded paper | Expired / Lapsed | 1954-09-30 | 1959-09-22 | 2 | Details |
| US2904522A | Process for the preparation of an expanded plastisol compos… | Expired / Lapsed | 1954-05-24 | 1959-09-15 | 2 | Details |
| CA582945A | Block copolymers of formaldehyde with active hydrogen-conta… | Expired / Lapsed | — | 1959-09-08 | 0 | Details |
| US2900669A | Irreversibly elongatable cellulose triacetate structure and… | Expired / Lapsed | 1957-03-27 | 1959-08-25 | 2 | Details |
| US2898882A | Apparatus for coating and drying photographic layers | Expired / Lapsed | 1956-03-01 | 1959-08-11 | 0 | Details |
| US2898262A | Compositions and methods | Expired / Lapsed | 1957-05-31 | 1959-08-04 | 1 | Details |
| US2898228A | Method for coating polyfluoroethylenes | Expired / Lapsed | 1957-02-18 | 1959-08-04 | 2 | Details |
| US2897042A | Method for increasing pill resistance and density of blende… | Expired / Lapsed | 1955-06-30 | 1959-07-28 | 2 | Details |
| US2893105A | Formation of felt-like products from synthetic filaments | Expired / Lapsed | 1954-06-11 | 1959-07-07 | 2 | Details |
| US2891278A | Spinneret | Expired / Lapsed | 1956-05-14 | 1959-06-23 | 0 | Details |
| US2891921A | Stabilization of polytetrafluoroethylene filler slurries | Expired / Lapsed | 1955-09-22 | 1959-06-23 | 2 | Details |
| US2884334A | Cement and method of stabilizing soil | Expired / Lapsed | 1955-05-04 | 1959-04-28 | 2 | Details |
| US2883261A | Process for filtration during melt spinning | Expired / Lapsed | 1955-02-02 | 1959-04-21 | 1 | Details |
| US2877193A | Stabilization of polyurethane reaction products | Expired / Lapsed | 1955-02-23 | 1959-03-10 | 2 | Details |
| US2877212A | Polyurethanes from difunctional polymers of conjugated dien… | Expired / Lapsed | 1954-10-11 | 1959-03-10 | 2 | Details |
| US2876131A | Coating of fibrous structrues with tetrafluoroethylene poly… | Expired / Lapsed | 1954-11-23 | 1959-03-03 | 2 | Details |
| US2869974A | Process for shrinking polyacrylonitrile textiles with speci… | Expired / Lapsed | 1955-03-02 | 1959-01-20 | 2 | Details |
| US2866769A | Process for making a mat composed of aluminum silicate fibe… | Expired / Lapsed | 1954-07-28 | 1958-12-30 | 2 | Details |
| US2865765A | Process of preserving fresh produce in oriented film | Expired / Lapsed | 1954-12-29 | 1958-12-23 | 2 | Details |
| US2865891A | Linear copolyesters and process | Expired / Lapsed | 1953-09-24 | 1958-12-23 | 2 | Details |
| US2865855A | Textile treating composition | Expired / Lapsed | 1952-08-08 | 1958-12-23 | 1 | Details |
| US2857650A | Needle | Expired / Lapsed | 1954-05-04 | 1958-10-28 | 0 | Details |
| US2853472A | Polyurethane elastomers cured with dhsocyanates | Expired / Lapsed | 1955-02-14 | 1958-09-23 | 1 | Details |
| US2852906A | Method and apparatus for producing bulky continuous filamen… | Expired / Lapsed | 1953-08-20 | 1958-09-23 | 4 | Details |
| US2852497A | Unsaturated sulfonamides of chlorosulfonated olefin polymers | Expired / Lapsed | 1956-07-24 | 1958-09-16 | 2 | Details |
| US2851733A | Process of stretching thermoplastic film | Expired / Lapsed | 1956-01-03 | 1958-09-16 | 2 | Details |
| US2848752A | Process for the production of porous open-cell structure po… | Expired / Lapsed | 1954-12-03 | 1958-08-26 | 2 | Details |
| US2847391A | Vapor-phase polymerization of tetrafluoroethylene in the pr… | Expired / Lapsed | 1955-02-24 | 1958-08-12 | 1 | Details |
| US2843502A | Process of coating a fabric with polytetrafluoroethylene, t… | Expired / Lapsed | 1954-02-17 | 1958-07-15 | 3 | Details |
| US2833686A | Bonding polytetrafluoroethylene resins | Expired / Lapsed | 1955-06-20 | 1958-05-06 | 2 | Details |
| US2833722A | Detergent compositions | Expired / Lapsed | 1955-03-01 | 1958-05-06 | 2 | Details |
| US2833730A | Arylene diisocyanate-fatty acid triglyceride-polyol cellula… | Expired / Lapsed | 1953-09-30 | 1958-05-06 | 2 | Details |
| US2832713A | Non-woven sheet material | Expired / Lapsed | 1955-06-21 | 1958-04-29 | 2 | Details |
| US2829944A | Method of extruding an aqueous particulate dispersion of fi… | Expired / Lapsed | 1955-11-14 | 1958-04-08 | 2 | Details |
| US2828528A | Finishing polyester fabrics | Expired / Lapsed | 1956-12-12 | 1958-04-01 | 2 | Details |
| US2828799A | Process of enveloping shaped objects | Expired / Lapsed | 1955-10-10 | 1958-04-01 | 0 | Details |
| US2825706A | Coating compositions comprising polytetrafluoroethylene and… | Expired / Lapsed | 1954-11-23 | 1958-03-04 | 2 | Details |
| US2824025A | Thermoplastic polymeric films | Expired / Lapsed | 1956-06-06 | 1958-02-18 | 2 | Details |
| US2822357A | Manufacture of polyethylene of controlled molecular weight | Expired / Lapsed | 1955-01-28 | 1958-02-04 | 2 | Details |
| US2822348A | Ester interchange catalysts | Expired / Lapsed | 1951-11-14 | 1958-02-04 | 1 | Details |
| US2819192A | Modification of aluminum surfaces | Expired / Lapsed | 1955-12-23 | 1958-01-07 | 2 | Details |
| US2816883A | Product and process of polymerizing ethylene | Expired / Lapsed | 1951-08-02 | 1957-12-17 | 4 | Details |
| US2804645A | Spinneret plate for melt spinning | Expired / Lapsed | 1953-05-12 | 1957-09-03 | 0 | Details |
| US2801447A | Process for treating polyethylene structures | Expired / Lapsed | 1953-04-07 | 1957-08-06 | 2 | Details |
| US2801446A | Process for treating polyethylene structures and articles r… | Expired / Lapsed | 1952-11-29 | 1957-08-06 | 2 | Details |
| US2791806A | Extrusion of polytetrafluoroethylene at temperatures above … | Expired / Lapsed | 1953-08-21 | 1957-05-14 | 2 | Details |
| US2787603A | Aqueous coating compositions and substrates coated therewith | Expired / Lapsed | 1953-07-23 | 1957-04-02 | 2 | Details |
| US2787601A | Cellular plastic materials which are condensation products … | Expired / Lapsed | 1953-03-03 | 1957-04-02 | 2 | Details |
| US2782173A | Production of polyvinyl acetate beads and emulsions | Expired / Lapsed | 1953-05-15 | 1957-02-19 | 2 | Details |
| US2782179A | Process for preparing polytetrafluoroethylene-asbestos comp… | Expired / Lapsed | 1953-01-14 | 1957-02-19 | 2 | Details |
| US2782180A | Modified polytetrafluoroethylene compositions and products … | Expired / Lapsed | 1952-08-25 | 1957-02-19 | 2 | Details |
| US2779684A | Polyester films and their preparation | Expired / Lapsed | 1955-02-17 | 1957-01-29 | 1 | Details |
| US2776465A | Highly oriented shaped tetrafluoroethylene article and proc… | Expired / Lapsed | 1954-08-12 | 1957-01-08 | 1 | Details |
| US2775570A | Solutions of formaldehyde polymers | Expired / Lapsed | 1952-08-30 | 1956-12-25 | 2 | Details |
| US2774276A | Colorimeter | Expired / Lapsed | 1951-08-28 | 1956-12-18 | 0 | Details |
| US2773781A | Coated article and method of making | Expired / Lapsed | 1954-09-24 | 1956-12-11 | 2 | Details |
| US2772444A | Composition comprising a polyhalogenated ethylene polymer a… | Expired / Lapsed | 1954-08-12 | 1956-12-04 | 2 | Details |
| US2764506A | Process for impregnating fibrous material derived from a te… | Expired / Lapsed | 1954-09-24 | 1956-09-25 | 2 | Details |
| US2764504A | Coating process and products therefrom | Expired / Lapsed | 1952-08-28 | 1956-09-25 | 2 | Details |
| US2764468A | Method of preparing resilient acrylonitrile polymer fibers | Expired / Lapsed | 1952-02-23 | 1956-09-25 | 2 | Details |
| US2760511A | Pneumatic cycle timer | Expired / Lapsed | 1953-03-04 | 1956-08-28 | 2 | Details |
| US2758075A | Electrodeposition of tin | Expired / Lapsed | 1951-10-15 | 1956-08-07 | 2 | Details |
| US2752321A | Lubricating tetrafluoroethylene polymers | Expired / Lapsed | 1953-02-27 | 1956-06-26 | 2 | Details |
| US2750345A | Process for producing sols of 5-8 millimicron silica partic… | Expired / Lapsed | 1954-02-25 | 1956-06-12 | 2 | Details |
| US2748027A | Sizing of vinylidene chloride copolymer surfaces | Expired / Lapsed | 1953-05-29 | 1956-05-29 | 2 | Details |
| US2747154A | Concrete tool immobilizing circuit | Expired / Lapsed | 1953-09-30 | 1956-05-22 | 1 | Details |
| US2739058A | Process for sizing paper with polyethylene | Expired / Lapsed | 1952-07-17 | 1956-03-20 | 2 | Details |
| US2731068A | Tetrafluoroethylene polymer bonded heat-resistant fabric | Expired / Lapsed | 1950-09-23 | 1956-01-17 | 2 | Details |
| US2730478A | Fibrous materials and processes for making same | Expired / Lapsed | 1954-03-05 | 1956-01-10 | 2 | Details |
| US2726219A | Polyalkylene ether glycol-arylene diisocyanate elastomer sp… | Expired / Lapsed | 1951-08-24 | 1955-12-06 | 2 | Details |
| US2725309A | Coated non-woven fabric and method of making | Expired / Lapsed | 1951-06-18 | 1955-11-29 | 2 | Details |
| US2723935A | Sheet material | Expired / Lapsed | 1954-10-01 | 1955-11-15 | 2 | Details |
| US2723257A | Vulcanized chlorosulfonated polymers | Expired / Lapsed | 1954-08-27 | 1955-11-08 | 2 | Details |
| US2721812A | Quaternary ammonium organo silanolate, process of treating … | Expired / Lapsed | 1952-04-01 | 1955-10-25 | 2 | Details |
| US2721189A | Polymeric bicyclo-(2, 2, 1)-2-heptene | Expired / Lapsed | 1954-08-30 | 1955-10-18 | 0 | Details |
| US2720468A | Process for gelling | Expired / Lapsed | 1954-05-28 | 1955-10-11 | 1 | Details |
| US2719100A | Process of heat-sealing tensilized thermoplastic films | Expired / Lapsed | 1952-03-24 | 1955-09-27 | 2 | Details |
| US2716049A | Water-soluble yarn | Expired / Lapsed | 1951-11-01 | 1955-08-23 | 2 | Details |
| US2715077A | Process for treating polyethylene structures | Expired / Lapsed | 1952-11-29 | 1955-08-09 | 1 | Details |
| US2715076A | Process for treating polyethylene structures and articles r… | Expired / Lapsed | 1952-11-29 | 1955-08-09 | 2 | Details |
| US2714075A | Dilute aqueous dispersions and their application | Expired / Lapsed | 1951-11-27 | 1955-07-26 | 2 | Details |
| US2710266A | Polytetrafluoroethylene coating compositions, method of app… | Expired / Lapsed | 1953-12-21 | 1955-06-07 | 1 | Details |
| US2703316A | Polymers of high melting lactide | Expired / Lapsed | 1951-06-05 | 1955-03-01 | 2 | Details |
| US2702797A | Process for stabilizing a polyurethane | Expired / Lapsed | 1953-04-10 | 1955-02-22 | 2 | Details |
| CA510145A | Liquid phase ethylene polymerization | Expired / Lapsed | — | 1955-02-15 | 0 | Details |
| US2698463A | Molten plastic extrusion process | Expired / Lapsed | 1951-11-03 | 1955-01-04 | 0 | Details |
| US2698240A | Photographic films and their preparation | Expired / Lapsed | 1952-05-27 | 1954-12-28 | 2 | Details |
| US2697053A | Method of coating a sheet of polyvinyl butyral resin and la… | Expired / Lapsed | 1951-04-25 | 1954-12-14 | 2 | Details |
| US2692247A | Alpha aminocarboxylic acid polymer compositions | Expired / Lapsed | 1950-07-13 | 1954-10-19 | 2 | Details |
| US2691694A | Polytetrafluoroethylene-glass fiber insulated electrical co… | Expired / Lapsed | 1949-04-09 | 1954-10-12 | 1 | Details |
| US2685707A | Extrusion of tetrafluoroethylene polymer | Expired / Lapsed | 1950-06-30 | 1954-08-10 | 2 | Details |
| US2683073A | Process for preventing nylon gel formation | Expired / Lapsed | 1951-08-22 | 1954-07-06 | 2 | Details |
| US2683136A | Copolymers of hydroxyacetic acid with other alcohol acids | Expired / Lapsed | 1950-10-25 | 1954-07-06 | 2 | Details |
| US2677679A | Quaternary ammonium polymers of the acrylic type | Expired / Lapsed | 1951-03-21 | 1954-05-04 | 1 | Details |
| US2676945A | Condensation polymers of hydroxyacetic acid | Expired / Lapsed | 1950-10-18 | 1954-04-27 | 1 | Details |
| US2676166A | Polymeric quaternary ammonium compounds | Expired / Lapsed | 1952-04-01 | 1954-04-20 | 2 | Details |
| US2676120A | Sizing of ethylene polymer structures | Expired / Lapsed | 1951-09-13 | 1954-04-20 | 1 | Details |
| US2668162A | Preparation of high molecular weight polyhydroxyacetic ester | Expired / Lapsed | 1952-03-20 | 1954-02-02 | 2 | Details |
| US2668157A | Abrasion resistant wire enamels | Expired / Lapsed | 1951-03-15 | 1954-02-02 | 2 | Details |
| US2667706A | Solids-gas contacting | Expired / Lapsed | 1950-09-09 | 1954-02-02 | 2 | Details |
| US2664378A | Manufacture of articles from polyethylene films | Expired / Lapsed | 1950-05-29 | 1953-12-29 | 2 | Details |
| US2663612A | Process for coloring hydrophobic fiber | Expired / Lapsed | 1950-05-10 | 1953-12-22 | 2 | Details |
| US2662065A | Process for obtaining dispersions of polyfluorethylenes | Expired / Lapsed | 1951-05-10 | 1953-12-08 | 2 | Details |
| US2657189A | Dilute alkali dispersible hot melt bookbinding adhesives | Expired / Lapsed | 1949-12-08 | 1953-10-27 | 2 | Details |
| US2655489A | Coating compositions comprising polyethylene and alkyl poly… | Expired / Lapsed | 1951-09-19 | 1953-10-13 | 1 | Details |
| US2653074A | Dyeing of polyacrylonitrile fibers | Expired / Lapsed | 1951-05-24 | 1953-09-22 | 2 | Details |
| US2650213A | Production of polyethylene terephthalate | Expired / Lapsed | 1951-07-24 | 1953-08-25 | 2 | Details |
| US2649622A | Process for molding synthetic linear polyesters | Expired / Lapsed | 1949-12-20 | 1953-08-25 | 2 | Details |
| US2647104A | Linear polyester composition | Expired / Lapsed | 1951-07-30 | 1953-07-28 | 2 | Details |
| US2647080A | Light-stabilized photopolymerization of acrylic esters | Expired / Lapsed | 1950-06-30 | 1953-07-28 | 1 | Details |
| US2646422A | Cured chlorosulfonated interpolymers of the diolefins | Expired / Lapsed | 1951-03-16 | 1953-07-21 | 2 | Details |
| US2644802A | Tetrafluoroethylene polymer compositions containing polyorg… | Expired / Lapsed | 1950-06-30 | 1953-07-07 | 2 | Details |
| US2643250A | Isocyanate dimers as color forming intermediates | Expired / Lapsed | 1951-11-16 | 1953-06-23 | 2 | Details |
| US2641584A | Adhesive compositions, including an amylaceous material and… | Expired / Lapsed | 1951-10-26 | 1953-06-09 | 2 | Details |
| US2641592A | Production of polyethylene terephthalate with cobaltous ace… | Expired / Lapsed | 1951-07-24 | 1953-06-09 | 2 | Details |
| US2639808A | Packaging of tacky materials | Expired / Lapsed | 1947-03-13 | 1953-05-26 | 0 | Details |
| US2636873A | Blends of polyamides and polymeric polyamines | Expired / Lapsed | 1949-08-13 | 1953-04-28 | 2 | Details |
| US2628223A | Polymerization of acrylonitrile to polymers of controlled m… | Expired / Lapsed | 1949-02-09 | 1953-02-10 | 2 | Details |
| US2621193A | Polymeric titanium compounds | Expired / Lapsed | 1950-06-27 | 1952-12-09 | 1 | Details |
| US2613193A | Sprayable polytetrafluoroethylene aqueous suspensoids conta… | Expired / Lapsed | 1950-01-10 | 1952-10-07 | 2 | Details |
| US2612814A | Differential refractometer | Expired / Lapsed | 1948-05-26 | 1952-10-07 | 0 | Details |
| US2610359A | Process for producing polyvinyl alcohol filaments of improv… | Expired / Lapsed | 1950-04-22 | 1952-09-16 | 2 | Details |
| US2610360A | Water-resistant polyvinyl alcohol filament and process for … | Expired / Lapsed | 1950-04-22 | 1952-09-16 | 2 | Details |
| US2604667A | Yarn process | Expired / Lapsed | 1950-08-23 | 1952-07-29 | 2 | Details |
| US2604689A | Melt spinning process and fiber | Expired / Lapsed | 1950-08-23 | 1952-07-29 | 2 | Details |
| US2599640A | Copolymers of chlorotrifluoroethylene, an olefinic hydrocar… | Expired / Lapsed | 1944-08-04 | 1952-06-10 | 2 | Details |
| US2592147A | Codispersions of polytetrafluoroethylene and hydrous oxides | Expired / Lapsed | 1947-05-23 | 1952-04-08 | 2 | Details |
| US2586357A | Tetrafluoroethylene polymer compositions | Expired / Lapsed | 1950-06-30 | 1952-02-19 | 2 | Details |
| US2578899A | Superstretching polyester structures | Expired / Lapsed | 1949-10-22 | 1951-12-18 | 1 | Details |
| CA479262A | Processes for production of nylon of low thermoextensibility | Expired / Lapsed | — | 1951-12-11 | 0 | Details |
| US2578523A | Polytetrafluoroethylene packing material and process for ma… | Expired / Lapsed | 1950-06-30 | 1951-12-11 | 2 | Details |
| US2578522A | Process of preparing unsupported films of polytetrafluoroet… | Expired / Lapsed | 1949-06-08 | 1951-12-11 | 2 | Details |
| US2570478A | Vinylidene chloride interpolymer as a coating for regenerat… | Expired / Lapsed | 1948-07-20 | 1951-10-09 | 2 | Details |
| US2570856A | Process for obtaining pigmented films | Expired / Lapsed | 1947-03-25 | 1951-10-09 | 2 | Details |
| US2570094A | Alkylolamine and morpholine salts of polymerized olefin sul… | Expired / Lapsed | 1950-03-28 | 1951-10-02 | 1 | Details |
| US2569511A | Blasting device | Expired / Lapsed | 1948-12-22 | 1951-10-02 | 0 | Details |
| US2567162A | Coated electrical conductor and method of making same | Expired / Lapsed | 1948-01-14 | 1951-09-04 | 2 | Details |
| US2566982A | Process for manufacturing embossed vinyl resin film | Expired / Lapsed | 1946-08-01 | 1951-09-04 | 2 | Details |
| US2562118A | Polytetrafluoroethylene coating compositions | Expired / Lapsed | 1950-02-09 | 1951-07-24 | 2 | Details |
| US2560694A | Bromate ion-sulfoxy compound catalyst system in aqueous pol… | Expired / Lapsed | 1950-07-15 | 1951-07-17 | 2 | Details |
| US2561215A | Laminated products and adhesive compositions of matter | Expired / Lapsed | 1945-11-01 | 1951-07-17 | 2 | Details |
| US2559752A | Aqueous colloidal dispersions of polymers | Expired / Lapsed | 1951-03-06 | 1951-07-10 | 2 | Details |
| US2559750A | Aqueous colloidal dispersions of polytetrafluoroethylene an… | Expired / Lapsed | 1949-07-27 | 1951-07-10 | 1 | Details |
| US2557266A | Reaction product of an acrylic acid resin and a resin conta… | Expired / Lapsed | 1944-05-20 | 1951-06-19 | 2 | Details |
| US2556295A | Process of drawing formed structures of synthetic linear po… | Expired / Lapsed | 1947-07-23 | 1951-06-12 | 2 | Details |
| US2549935A | Polymers of hexafluoropropene | Expired / Lapsed | 1946-06-18 | 1951-04-24 | 2 | Details |
| US2549220A | Coated wrapping tissue and process of making same | Expired / Lapsed | 1948-02-13 | 1951-04-17 | 1 | Details |
| US2546238A | Inhibition of acrylonitrile polymerization | Expired / Lapsed | 1947-02-18 | 1951-03-27 | 2 | Details |
| US2543229A | Polythene layer bonded to another layer by ethylene-vinyl a… | Expired / Lapsed | 1948-04-27 | 1951-02-27 | 2 | Details |
| US2539329A | Process of coating an inorganic fabric with polytetrafluoro… | Expired / Lapsed | 1949-04-09 | 1951-01-23 | 2 | Details |
| US2535045A | Spinning of viscose | Expired / Lapsed | 1947-04-26 | 1950-12-26 | 2 | Details |
| US2534326A | Process of manufacturing photographic elements | Expired / Lapsed | 1946-11-27 | 1950-12-19 | 2 | Details |
| US2534058A | Polymerization of tetrafluoroethylene with dibasic acid per… | Expired / Lapsed | 1946-11-30 | 1950-12-12 | 2 | Details |
| US2532277A | 1, 6 hexanediamine derivatives | Expired / Lapsed | 1948-05-21 | 1950-12-05 | 4 | Details |
| US2527806A | Dicarboxylic acid anhydride-4-vinylcyclohexene diepoxide re… | Expired / Lapsed | 1948-02-10 | 1950-10-31 | 2 | Details |
| US2525049A | Cellulose titanate film production | Expired / Lapsed | 1946-08-22 | 1950-10-10 | 1 | Details |
| US2524432A | Esters of epoxy alcohols with propenoic compounds | Expired / Lapsed | 1945-08-17 | 1950-10-03 | 1 | Details |
| US2520173A | Process for preparing unsupported films of tetrafluoroethyl… | Expired / Lapsed | 1948-01-14 | 1950-08-29 | 2 | Details |
| US2513312A | Copolymer of vinyl fluoride and chlorotrifluoroethylene | Expired / Lapsed | 1944-06-08 | 1950-07-04 | 2 | Details |
| US2512058A | Titanated organo-silicon-oxy compounds | Expired / Lapsed | 1948-04-05 | 1950-06-20 | 1 | Details |
| US2512463A | Cellular plastic products and method of making | Expired / Lapsed | 1946-05-28 | 1950-06-20 | 2 | Details |
| US2509857A | Compatibilized resin compositions | Expired / Lapsed | 1945-07-09 | 1950-05-30 | 2 | Details |
| US2495918A | Poly-n-vinyl lactam photographic silver halide emulsions | Expired / Lapsed | 1948-08-28 | 1950-01-31 | 2 | Details |
| US2491642A | Polyvinyl alcohol casting solution | Expired / Lapsed | 1944-09-02 | 1949-12-20 | 0 | Details |
| US2489651A | Production of organic titanium compounds | Expired / Lapsed | 1946-06-25 | 1949-11-29 | 0 | Details |
| US2485691A | Production of extruded polytetrafluoroethylene articles | Expired / Lapsed | 1948-02-20 | 1949-10-25 | 0 | Details |
| US2485239A | Polymers containing recurring aldehyde groups and derivativ… | Expired / Lapsed | 1945-03-06 | 1949-10-18 | 0 | Details |
| US2484484A | Process for obtaining laminated products | Expired / Lapsed | 1948-07-06 | 1949-10-11 | 0 | Details |
| US2484483A | Polytetrafluoroethylene dispersions | Expired / Lapsed | 1945-07-26 | 1949-10-11 | 0 | Details |
| US2480775A | Dyeing nylon hosiery | Expired / Lapsed | 1948-07-03 | 1949-08-30 | 0 | Details |
| US2480295A | Adhesive compositions | Expired / Lapsed | 1946-02-09 | 1949-08-30 | 0 | Details |
| US2476606A | Stabilized vinyl fluoride polymers | Expired / Lapsed | 1945-07-04 | 1949-07-19 | 0 | Details |
| US2474906A | Polarized light system for determining variations in the wi… | Expired / Lapsed | 1945-08-03 | 1949-07-05 | 0 | Details |
| US2468664A | Tetrafluoroethylene copolymers | Expired / Lapsed | 1945-08-28 | 1949-04-26 | 0 | Details |
| US2467436A | Plasticized hydroxylated polymeric film and method of makin… | Expired / Lapsed | 1943-12-18 | 1949-04-19 | 0 | Details |
| US2467186A | Aqueous dispersions of synthetic linear polyamide and proce… | Expired / Lapsed | 1945-04-20 | 1949-04-12 | 0 | Details |
| US2465319A | Polymeric linear terephthalic esters | Expired / Lapsed | 1945-09-24 | 1949-03-22 | 0 | Details |
| US2463396A | Distillation of titanium tetrachloride | Expired / Lapsed | 1946-06-26 | 1949-03-01 | 0 | Details |
| US2462927A | Artificial filaments and yarn | Expired / Lapsed | 1943-11-06 | 1949-03-01 | 0 | Details |
| US2462400A | Copolymers of dihydrodicyclopentadienyl methacrylate with e… | Expired / Lapsed | 1946-07-17 | 1949-02-22 | 0 | Details |
| US2462185A | Moistureproof, heat-sealable wrapping material and process | Expired / Lapsed | 1946-02-19 | 1949-02-22 | 0 | Details |
| US2456621A | Method of extruding polytetrafluoroethylene and coating art… | Expired / Lapsed | 1946-08-17 | 1948-12-21 | 0 | Details |
| US2456262A | Fabrication of polytetrafluoroethylene articles | Expired / Lapsed | 1946-03-29 | 1948-12-14 | 0 | Details |
| US2456255A | Polymers of trifluoroethylene and process for obtaining them | Expired / Lapsed | 1944-09-19 | 1948-12-14 | 0 | Details |
| US2453052A | Stain resistant plasticized polyvinyl chloride resin coatin… | Expired / Lapsed | 1946-07-03 | 1948-11-02 | 0 | Details |
| US2451370A | Long-chain secondary alkyl n-substituted polymeric styrene/… | Expired / Lapsed | 1946-04-30 | 1948-10-12 | 0 | Details |
| US2449613A | Reactions of inorganic polyisocyanates and polyisothiocyana… | Expired / Lapsed | 1943-06-17 | 1948-09-21 | 0 | Details |
| US2449489A | Preparation of polymeric ethylene emulsions | Expired / Lapsed | 1947-07-03 | 1948-09-14 | 0 | Details |
| US2449180A | Composition of phenol-rubber and resorcinol-formaldehyde | Expired / Lapsed | 1945-06-21 | 1948-09-14 | 0 | Details |
| US2448828A | Photopolymerization | Expired / Lapsed | 1946-09-04 | 1948-09-07 | 0 | Details |
| US2448952A | Method for obtaining dispersions of polytetrafluoroethylene… | Expired / Lapsed | 1945-07-26 | 1948-09-07 | 0 | Details |
| US2448666A | Polyethylene-polyvinyl acetal composition | Expired / Lapsed | 1944-06-14 | 1948-09-07 | 0 | Details |
| US2445042A | Method of treating oriented acrylonitrile structures | Expired / Lapsed | 1943-07-28 | 1948-07-13 | 0 | Details |
| US2443420A | Synthesis of nitriles | Expired / Lapsed | 1946-02-21 | 1948-06-15 | 0 | Details |
| US2443450A | Article coated with nu-alkoxymethyl polyamide and process o… | Expired / Lapsed | 1943-07-01 | 1948-06-15 | 0 | Details |
| US2440190A | Preparation of nonporous polytetrafluoroethylene articles | Expired / Lapsed | 1944-03-01 | 1948-04-20 | 0 | Details |
| US2436926A | Polymerization of acrylic acid nitriles | Expired / Lapsed | 1943-08-02 | 1948-03-02 | 0 | Details |
| US2436596A | Adhesive and method of making the same | Expired / Lapsed | 1942-08-22 | 1948-02-24 | 0 | Details |
| US2436222A | Adhesive cement compositions | Expired / Lapsed | 1943-11-23 | 1948-02-17 | 0 | Details |
| US2436201A | Production of strain-free, extruded shapes from organic the… | Expired / Lapsed | 1943-06-26 | 1948-02-17 | 0 | Details |
| US2434079A | Dielectric material and method of making same | Expired / Lapsed | 1945-04-27 | 1948-01-06 | 0 | Details |
| US2433844A | Organic fluoroethers and their preparation | Expired / Lapsed | 1943-04-23 | 1948-01-06 | 0 | Details |
| US2431956A | Dyeing articles composed of acrylonitrile polymers | Expired / Lapsed | 1945-05-04 | 1947-12-02 | 0 | Details |
| US2430479A | Bonding of laminates by means of isocyanates | Expired / Lapsed | 1941-07-23 | 1947-11-11 | 0 | Details |
| US2430273A | Tool for lining pipe | Expired / Lapsed | 1945-11-14 | 1947-11-04 | 0 | Details |
| US2428704A | Yarn-advancing reel | Expired / Lapsed | 1945-12-07 | 1947-10-07 | 0 | Details |
| US2427183A | Electrical insulation | Expired / Lapsed | 1943-10-25 | 1947-09-09 | 0 | Details |
| US2425349A | Laminated structures | Expired / Lapsed | 1943-09-28 | 1947-08-12 | 0 | Details |
| US2425348A | Mixture of cyclized rubber and resorcinol-formaldehyde resol | Expired / Lapsed | 1943-09-09 | 1947-08-12 | 0 | Details |
| US2423318A | Vinyl cyanide from acetylene and hcn | Expired / Lapsed | 1945-05-30 | 1947-07-01 | 0 | Details |
| US2422722A | Extrusion apparatus | Expired / Lapsed | 1946-03-05 | 1947-06-24 | 0 | Details |
| US2419880A | Polyvinyl resin adhesive composition, plywood, and method o… | Expired / Lapsed | 1943-07-10 | 1947-04-29 | 0 | Details |
| US2419281A | Polyvinyl alcohol film | Expired / Lapsed | 1944-12-12 | 1947-04-22 | 0 | Details |
| US2419010A | Polyvinyl fluoride | Expired / Lapsed | 1943-11-19 | 1947-04-15 | 0 | Details |
| US2419035A | Manufacture of molding powders | Expired / Lapsed | 1942-07-25 | 1947-04-15 | 0 | Details |
| US2418479A | Process for orienting ferromagnetic flakes in paint films | Expired / Lapsed | 1944-02-16 | 1947-04-08 | 0 | Details |
| US2417068A | Catalytic synthesis of vinyl cyanide | Expired / Lapsed | 1944-09-27 | 1947-03-11 | 0 | Details |
| US2416390A | Free fall fiber | Expired / Lapsed | 1943-02-25 | 1947-02-25 | 0 | Details |
| US2416061A | Curing of polymers of substituted monoolefinic hydrocarbons… | Expired / Lapsed | 1943-10-27 | 1947-02-18 | 0 | Details |
| US2416069A | Vulcanization of halogenated polymers of ethylene | Expired / Lapsed | 1943-08-20 | 1947-02-18 | 0 | Details |
| US2414144A | Sulfur-modified unsaturated cellulose ether and process of … | Expired / Lapsed | 1943-12-14 | 1947-01-14 | 0 | Details |
| US2413789A | Treatment of polyvinyl alcohol articles and products | Expired / Lapsed | 1943-06-18 | 1947-01-07 | 0 | Details |
| US2413973A | Photopolymerization of vinyl and vinylidene compounds | Expired / Lapsed | 1942-10-21 | 1947-01-07 | 0 | Details |
| US2412993A | Polymeric materials | Expired / Lapsed | 1943-07-19 | 1946-12-24 | 0 | Details |
| US2411954A | Treatment of polyunsaturated esters with polythiols and pro… | Expired / Lapsed | 1944-01-25 | 1946-12-03 | 0 | Details |
| US2412148A | Fuel barrier | Expired / Lapsed | 1942-09-21 | 1946-12-03 | 0 | Details |
| US2411159A | Lubricant | Expired / Lapsed | 1943-07-22 | 1946-11-19 | 0 | Details |
| US2410844A | Metal plating process | Expired / Lapsed | 1942-01-14 | 1946-11-12 | 0 | Details |
| US2410047A | Method of explosively blasting joints | Expired / Lapsed | 1942-01-09 | 1946-10-29 | 0 | Details |
| US2409749A | Indicating system | Expired / Lapsed | 1943-11-20 | 1946-10-22 | 0 | Details |
| US2408654A | Silicic acid sols | Expired / Lapsed | 1942-04-18 | 1946-10-01 | 0 | Details |
| US2407181A | Artificial waxes and greases | Expired / Lapsed | 1944-03-30 | 1946-09-03 | 0 | Details |
| US2406039A | Coated metal article | Expired / Lapsed | 1942-12-04 | 1946-08-20 | 0 | Details |
| US2405038A | Carburetor diaphragm | Expired / Lapsed | 1943-12-24 | 1946-07-30 | 0 | Details |
| US2404779A | Process for the copolymerization of asymmetrical dihalogena… | Expired / Lapsed | 1941-08-19 | 1946-07-30 | 0 | Details |
| US2404726A | Polymer compositions and their preparation | Expired / Lapsed | 1944-11-18 | 1946-07-23 | 0 | Details |
| US2404714A | Polymer products | Expired / Lapsed | 1944-11-04 | 1946-07-23 | 0 | Details |
| US2404713A | Method for preparing polymeric solutions | Expired / Lapsed | 1943-06-23 | 1946-07-23 | 0 | Details |
| US2403476A | Extrusion apparatus | Expired / Lapsed | 1944-08-08 | 1946-07-09 | 0 | Details |
| US2403465A | Treatment of hydroxyl-containing interpolymers of ethylene | Expired / Lapsed | 1942-12-18 | 1946-07-09 | 0 | Details |
| US2403464A | Hydrolyzed vinyl ester interpolymer fibers | Expired / Lapsed | 1942-07-22 | 1946-07-09 | 0 | Details |
| US2403077A | Laminated structure and method | Expired / Lapsed | 1942-02-06 | 1946-07-02 | 0 | Details |
| US2400091A | Molding process | Expired / Lapsed | 1944-09-20 | 1946-05-14 | 0 | Details |
| US2400094A | Molding process | Expired / Lapsed | 1944-03-02 | 1946-05-14 | 0 | Details |
| US2400099A | Process for obtaining shaped articles | Expired / Lapsed | 1943-10-25 | 1946-05-14 | 0 | Details |
| US2399313A | Process for the manufacture of electrical capacitors | Expired / Lapsed | 1943-10-04 | 1946-04-30 | 0 | Details |
| US2399211A | Method of perforating well casings | Expired / Lapsed | 1942-03-19 | 1946-04-30 | 0 | Details |
| US2397866A | Photographic elements | Expired / Lapsed | 1944-03-31 | 1946-04-02 | 0 | Details |
| US2396713A | Copolymers of halogenated ethylenes | Expired / Lapsed | 1944-06-12 | 1946-03-19 | 0 | Details |
| US2396629A | Fabrication of polytetrafluoroethylene articles | Expired / Lapsed | 1944-03-29 | 1946-03-19 | 0 | Details |
| US2396920A | Ethylene polymerization process | Expired / Lapsed | 1941-04-10 | 1946-03-19 | 0 | Details |
| US2395450A | Tool | Expired / Lapsed | 1944-12-19 | 1946-02-26 | 0 | Details |
| US2395442A | Electrical capacitor | Expired / Lapsed | 1943-10-15 | 1946-02-26 | 0 | Details |
| US2395419A | Pressure sensitive products | Expired / Lapsed | 1943-05-29 | 1946-02-26 | 0 | Details |
| US2395581A | Modified vinyl chloride-fumaric ester copolymer | Expired / Lapsed | 1942-11-12 | 1946-02-26 | 0 | Details |
| US2395550A | Modified alkyd resins | Expired / Lapsed | 1942-09-30 | 1946-02-26 | 0 | Details |
| US2395136A | Method and apparatus for yarn processing | Expired / Lapsed | 1942-01-09 | 1946-02-19 | 0 | Details |
| US2393967A | Process for polymerizing tetrafluoroethylene | Expired / Lapsed | 1942-12-24 | 1946-02-05 | 0 | Details |
| US2394243A | Process for polymerizing tetrafuloroethylene | Expired / Lapsed | 1942-07-23 | 1946-02-05 | 0 | Details |
| US2392378A | Copolymers of chlorotrifluoroethylene and olefin hydrocarbo… | Expired / Lapsed | 1943-10-25 | 1946-01-08 | 0 | Details |
| US2392389A | Process for obtaining decolorized polytetrafluoroethylene | Expired / Lapsed | 1943-10-25 | 1946-01-08 | 0 | Details |
| US2392388A | Electrical apparatus | Expired / Lapsed | 1942-11-05 | 1946-01-08 | 0 | Details |
| US2391986A | Protective sheet for rubber | Expired / Lapsed | 1942-11-17 | 1946-01-01 | 0 | Details |
| US2389419A | Preparation of electrical capacttors | Expired / Lapsed | 1943-10-04 | 1945-11-20 | 0 | Details |
| US2389420A | Manufacture of capacttors | Expired / Lapsed | 1943-10-04 | 1945-11-20 | 0 | Details |
| US2388325A | Spinning process for artificial filaments | Expired / Lapsed | 1944-03-04 | 1945-11-06 | 0 | Details |
| US2387742A | Explosion rivet | Expired / Lapsed | 1942-08-12 | 1945-10-30 | 0 | Details |
| US2387367A | Silicate base adhesive | Expired / Lapsed | 1942-06-30 | 1945-10-23 | 0 | Details |
| US2387512A | Luminescent adhesive tape | Expired / Lapsed | 1942-02-10 | 1945-10-23 | 0 | Details |
| US2386793A | Organic polysilicon esters | Expired / Lapsed | 1940-06-06 | 1945-10-16 | 0 | Details |
| US2386347A | Interpolymers of ethylene with vinyl esters and products th… | Expired / Lapsed | 1945-02-13 | 1945-10-09 | 0 | Details |
| US2386095A | Heating device | Expired / Lapsed | 1944-02-18 | 1945-10-02 | 0 | Details |
| US2385856A | Large rectangular spinneret | Expired / Lapsed | 1943-10-30 | 1945-10-02 | 0 | Details |
| US2385890A | Spinning process | Expired / Lapsed | 1943-03-31 | 1945-10-02 | 0 | Details |
| US2385580A | Vitrifiable flux and bonding composition containing same | Expired / Lapsed | 1944-07-01 | 1945-09-25 | 0 | Details |
| US2383653A | Silicic acid sols | Expired / Lapsed | 1941-06-04 | 1945-08-28 | 0 | Details |
| US2383067A | Luminescent cast synthetic resin articles | Expired / Lapsed | 1942-07-07 | 1945-08-21 | 0 | Details |
| US2379824A | Process and apparatus for treating artificial filaments | Expired / Lapsed | 1943-03-06 | 1945-07-03 | 0 | Details |
| US2379821A | Compounds | Expired / Lapsed | 1942-12-30 | 1945-07-03 | 0 | Details |
| US2377946A | Method of and apparatus for shaping thermoplastic sheets | Expired / Lapsed | 1940-12-27 | 1945-06-12 | 0 | Details |
| US2375853A | Diamine derivatives | Expired / Lapsed | 1942-10-07 | 1945-05-15 | 0 | Details |
| US2374767A | Grease-resistant film | Expired / Lapsed | 1942-09-02 | 1945-05-01 | 0 | Details |
| US2373135A | Treatment of hydroxylated polymers | Expired / Lapsed | 1942-04-14 | 1945-04-10 | 0 | Details |
| US2373627A | Organic phosphorus compounds | Expired / Lapsed | 1940-09-20 | 1945-04-10 | 0 | Details |
| US2372630A | Manufacture of improved molded polyamide articles | Expired / Lapsed | 1941-05-26 | 1945-03-27 | 0 | Details |
| US2369593A | Production of cast sheets | Expired / Lapsed | 1943-10-16 | 1945-02-13 | 0 | Details |
| US2369553A | Extrusion apparatus | Expired / Lapsed | 1943-04-29 | 1945-02-13 | 0 | Details |
| US2369057A | Process for treating acrylic resins | Expired / Lapsed | 1941-09-26 | 1945-02-06 | 0 | Details |
| US2366027A | Detergent and wetting compositions | Expired / Lapsed | 1942-04-01 | 1944-12-26 | 0 | Details |
| US2365931A | Finishing of polyamide fabrics | Expired / Lapsed | 1941-02-13 | 1944-12-26 | 0 | Details |
| US2364730A | Means for detonating explosive rivets | Expired / Lapsed | 1942-05-18 | 1944-12-12 | 0 | Details |
| US2364172A | Coating compositions | Expired / Lapsed | 1941-10-11 | 1944-12-05 | 0 | Details |
| US2362511A | Modified glycolide resins | Expired / Lapsed | 1939-11-21 | 1944-11-14 | 0 | Details |
| US2361449A | Article of manufacture | Expired / Lapsed | 1940-02-24 | 1944-10-31 | 0 | Details |
| US2360946A | Reinforced rubber structures | Expired / Lapsed | 1941-05-06 | 1944-10-24 | 0 | Details |
| US2360712A | Plastic sheeting and treatment thereof | Expired / Lapsed | 1940-07-10 | 1944-10-17 | 0 | Details |
| US2360650A | Method of treating plastic sheeting | Expired / Lapsed | 1940-07-10 | 1944-10-17 | 0 | Details |
| US2358355A | Treatment of polyvinyl butyral resins | Expired / Lapsed | 1942-02-11 | 1944-09-19 | 0 | Details |
| US2358376A | Process for the manufacture of regenerated cellulose ribbons | Expired / Lapsed | 1941-11-01 | 1944-09-19 | 0 | Details |
| US2356091A | Copolymers of sulphur modified polyhaloprenes | Expired / Lapsed | 1942-05-20 | 1944-08-15 | 0 | Details |
| US2352725A | Shaped product | Expired / Lapsed | 1941-11-04 | 1944-07-04 | 0 | Details |
| US2349756A | Formaldehyde resin modified with a polyiso-or polyisothiocy… | Expired / Lapsed | 1940-07-25 | 1944-05-23 | 0 | Details |
| US2348536A | Electrical insulation | Expired / Lapsed | 1937-06-03 | 1944-05-09 | 0 | Details |
| US2347031A | Air filter | Expired / Lapsed | 1940-06-07 | 1944-04-18 | 0 | Details |
| US2345917A | Injection molding of plastics | Expired / Lapsed | 1941-10-04 | 1944-04-04 | 0 | Details |
| US2346036A | Bonding of methacrylate polymers | Expired / Lapsed | 1940-11-29 | 1944-04-04 | 0 | Details |
| US2346124A | Bullet lubrication | Expired / Lapsed | 1939-12-08 | 1944-04-04 | 0 | Details |
| US2343093A | Treatment of textiles and composition useful therefor | Expired / Lapsed | 1940-08-03 | 1944-02-29 | 0 | Details |
| US2343089A | Treatment of textiles and composition useful therefor | Expired / Lapsed | 1940-08-03 | 1944-02-29 | 0 | Details |
| US2343095A | Resin dispersion useful in the textile and paper industries | Expired / Lapsed | 1940-08-03 | 1944-02-29 | 0 | Details |
| US2341016A | Condensation of aldehydes with carboxylic acids and their d… | Expired / Lapsed | 1941-09-09 | 1944-02-08 | 0 | Details |
| US2339775A | Coating composition | Expired / Lapsed | 1942-05-16 | 1944-01-25 | 0 | Details |
| US2339237A | Blended polyamides | Expired / Lapsed | 1941-04-11 | 1944-01-18 | 0 | Details |
| US2336797A | Felted product | Expired / Lapsed | 1939-06-19 | 1943-12-14 | 0 | Details |
| US2335133A | Tooth reconstruction | Expired / Lapsed | 1942-05-30 | 1943-11-23 | 0 | Details |
| US2334236A | Coated cellulosic material | Expired / Lapsed | 1940-12-11 | 1943-11-16 | 0 | Details |
| US2334476A | Unsaturated isocyanate | Expired / Lapsed | 1940-09-04 | 1943-11-16 | 0 | Details |
| US2333922A | Insulated electrical conductor | Expired / Lapsed | 1941-07-14 | 1943-11-09 | 0 | Details |
| US2333914A | Isocyanate treatment of polyamides | Expired / Lapsed | 1940-07-02 | 1943-11-09 | 0 | Details |
| US2333639A | Treatment of polyesters and product therefrom | Expired / Lapsed | 1940-07-02 | 1943-11-09 | 0 | Details |
| US2333206A | Protection of ferrous metals against corrosion | Expired / Lapsed | 1939-05-13 | 1943-11-02 | 0 | Details |
| US2332817A | Textile treating method | Expired / Lapsed | 1940-08-03 | 1943-10-26 | 0 | Details |
| US2332373A | Flexible transparent sheet material | Expired / Lapsed | 1942-03-03 | 1943-10-19 | 0 | Details |
| US2331276A | Organic thiocyanates and isothiocyanates and process of pre… | Expired / Lapsed | 1940-10-30 | 1943-10-05 | 0 | Details |
| US2330314A | Manufacture of nonwoven fabrics | Expired / Lapsed | 1940-08-23 | 1943-09-28 | 0 | Details |
| US2327985A | Acyl isothiocyanate and polymer thereof | Expired / Lapsed | 1940-03-29 | 1943-08-31 | 0 | Details |
| US2327087A | Manufacture of staple fibers | Expired / Lapsed | 1940-12-18 | 1943-08-17 | 0 | Details |
| US2326287A | Copolymer of unsaturated isocyanates | Expired / Lapsed | 1940-09-04 | 1943-08-10 | 0 | Details |
| US2325060A | Nonshrinking yarn | Expired / Lapsed | 1942-02-25 | 1943-07-27 | 0 | Details |
| US2324397A | Method for production of continuous structures | Expired / Lapsed | 1941-06-04 | 1943-07-13 | 0 | Details |
| US2319082A | Apparatus for overspray recovery | Expired / Lapsed | 1940-12-14 | 1943-05-11 | 0 | Details |
| US2318429A | Aqueous dispersion of polymerized alkyl methacrylate and me… | Expired / Lapsed | 1940-08-03 | 1943-05-04 | 0 | Details |
| US2317911A | Rubber structure | Expired / Lapsed | 1941-06-25 | 1943-04-27 | 0 | Details |
| US2317687A | Production of hollow articles from polymeric compositions | Expired / Lapsed | 1940-04-04 | 1943-04-27 | 0 | Details |
| US2317110A | Method of making brushes | Expired / Lapsed | 1938-08-04 | 1943-04-20 | 0 | Details |
| US2312913A | Polyamide coated film element | Expired / Lapsed | 1941-08-18 | 1943-03-02 | 0 | Details |
| US2312879A | Fiber-forming polymers and method of making them | Expired / Lapsed | 1940-04-22 | 1943-03-02 | 0 | Details |
| US2309729A | Molding of polymeric materials | Expired / Lapsed | 1938-09-30 | 1943-02-02 | 0 | Details |
| US2307817A | Polymeric product and process | Expired / Lapsed | 1940-09-26 | 1943-01-12 | 0 | Details |
| US2307508A | Preventing evaporation from oil storage tanks | Expired / Lapsed | 1939-10-04 | 1943-01-05 | 0 | Details |
| US2303927A | Coupling | Expired / Lapsed | 1941-12-20 | 1942-12-01 | 0 | Details |
| US2301959A | Moistureproof sheet wrapping material | Expired / Lapsed | 1940-09-10 | 1942-11-17 | 0 | Details |
| US2302167A | Footwear | Expired / Lapsed | 1940-06-14 | 1942-11-17 | 0 | Details |
| US2302332A | Coating process | Expired / Lapsed | 1940-04-09 | 1942-11-17 | 0 | Details |
| US2302583A | Plastic composition | Expired / Lapsed | 1938-12-21 | 1942-11-17 | 0 | Details |
| US2301703A | Knitting method | Expired / Lapsed | 1942-02-21 | 1942-11-10 | 0 | Details |
| US2300849A | Sulphuric acid manufacture and apparatus therefor | Expired / Lapsed | 1940-03-09 | 1942-11-03 | 0 | Details |
| US2300074A | Sizing | Expired / Lapsed | 1940-09-21 | 1942-10-27 | 0 | Details |
| US2297746A | Process for the production of cellulosic structures | Expired / Lapsed | 1940-10-17 | 1942-10-06 | 0 | Details |
| US2296249A | Polymers of formaldehyde | Expired / Lapsed | 1940-08-26 | 1942-09-22 | 0 | Details |
| US2295593A | Yarn preparation | Expired / Lapsed | 1941-07-30 | 1942-09-15 | 0 | Details |
| US2295942A | Manufacture of filaments | Expired / Lapsed | 1940-08-02 | 1942-09-15 | 0 | Details |
| US2296202A | Process of making artificial wool | Expired / Lapsed | 1940-03-19 | 1942-09-15 | 0 | Details |
| US2292905A | Artificial filament | Expired / Lapsed | 1939-07-06 | 1942-08-11 | 0 | Details |
| US2291238A | Method and apparatus for producing pellicles | Expired / Lapsed | 1937-11-30 | 1942-07-28 | 0 | Details |
| US2290794A | Aqueous dispersions of ethylene polymers | Expired / Lapsed | 1939-03-22 | 1942-07-21 | 0 | Details |
| US2289775A | Protein-polyamide mixture | Expired / Lapsed | 1940-06-14 | 1942-07-14 | 0 | Details |
| US2289774A | Process and apparatus for shaping polymeric materials | Expired / Lapsed | 1939-06-30 | 1942-07-14 | 0 | Details |
| US2287411A | Adhesive | Expired / Lapsed | 1940-12-19 | 1942-06-23 | 0 | Details |
| US2287099A | Artificial wool | Expired / Lapsed | 1938-01-07 | 1942-06-23 | 0 | Details |
| US2286752A | Resin | Expired / Lapsed | 1940-03-11 | 1942-06-16 | 0 | Details |
| US2285967A | Method for production of fabrics | Expired / Lapsed | 1940-08-22 | 1942-06-09 | 0 | Details |
| US2285855A | Lubrication | Expired / Lapsed | 1936-04-10 | 1942-06-09 | 0 | Details |
| US2285302A | Process for cementing oil wells | Expired / Lapsed | 1939-12-18 | 1942-06-02 | 0 | Details |
| US2284896A | Process for making polymeric products and for modifying pol… | Expired / Lapsed | 1939-05-24 | 1942-06-02 | 0 | Details |
| US2284637A | Polymeric carbamates and their preparation | Expired / Lapsed | 1938-09-29 | 1942-06-02 | 0 | Details |
| US2284525A | Process for the hydrogenation of adiponitrile | Expired / Lapsed | 1939-09-16 | 1942-05-26 | 0 | Details |
| US2282827A | Resinous product and method of making | Expired / Lapsed | 1939-11-13 | 1942-05-12 | 0 | Details |
| US2279774A | Coated product | Expired / Lapsed | 1938-09-29 | 1942-04-14 | 0 | Details |
| US2280022A | Method and apparatus for molding cellulosic structures | Expired / Lapsed | 1937-06-15 | 1942-04-14 | 0 | Details |
| US2278875A | Method and apparatus for the production of artificial struc… | Expired / Lapsed | 1938-09-29 | 1942-04-07 | 0 | Details |
| US2277788A | Treatment of textiles and composition useful therefor | Expired / Lapsed | 1940-08-03 | 1942-03-31 | 0 | Details |
| US2278350A | Polymeric material | Expired / Lapsed | 1940-05-08 | 1942-03-31 | 0 | Details |
| US2277083A | Composition | Expired / Lapsed | 1940-06-05 | 1942-03-24 | 0 | Details |
| US2276840A | Polymeric vinylimides | Expired / Lapsed | 1939-07-18 | 1942-03-17 | 0 | Details |
| US2276094A | Alpha, beta-unsaturated primary alcohol esters of silicic a… | Expired / Lapsed | 1939-08-24 | 1942-03-10 | 0 | Details |
| US2275312A | Process of nuclear alkylation in the presence of hydrofluor… | Expired / Lapsed | 1938-06-29 | 1942-03-03 | 0 | Details |
| US2274541A | Erosion-corrosion testing device | Expired / Lapsed | 1940-01-25 | 1942-02-24 | 0 | Details |
| US2274252A | Composition | Expired / Lapsed | 1938-04-13 | 1942-02-24 | 0 | Details |
| US2273040A | Chemical process and product | Expired / Lapsed | 1940-09-26 | 1942-02-17 | 0 | Details |
| US2273638A | Spinnerette lubricant | Expired / Lapsed | 1939-03-24 | 1942-02-17 | 0 | Details |
| US2273200A | Artificial structure | Expired / Lapsed | 1938-11-01 | 1942-02-17 | 0 | Details |
| US2272847A | Molding of organic plastics | Expired / Lapsed | 1940-07-23 | 1942-02-10 | 0 | Details |
| US2271468A | Water soluble polyvinyl alcohol softened with beta-hydroxy-… | Expired / Lapsed | 1941-01-18 | 1942-01-27 | 0 | Details |
| US2270386A | Aliphatic hydrocarbon ammonium chromate | Expired / Lapsed | 1939-05-13 | 1942-01-20 | 0 | Details |
| US2269125A | Method of making laminated fabrics | Expired / Lapsed | 1940-02-23 | 1942-01-06 | 0 | Details |
| US2268611A | Process of laminating | Expired / Lapsed | 1937-06-16 | 1942-01-06 | 0 | Details |
| US2268121A | Coated fabric | Expired / Lapsed | 1940-08-31 | 1941-12-30 | 0 | Details |
| US2268160A | Spongy superpolymer | Expired / Lapsed | 1939-06-21 | 1941-12-30 | 0 | Details |
| US2266368A | Apparatus for the production of artificial structures | Expired / Lapsed | 1938-11-10 | 1941-12-16 | 0 | Details |
| US2266363A | Apparatus for the production of filaments | Expired / Lapsed | 1938-11-10 | 1941-12-16 | 0 | Details |
| US2265242A | Preparation of ethenoid resins | Expired / Lapsed | 1939-07-29 | 1941-12-09 | 0 | Details |
| US2265226A | Cast resins having integral sheen | Expired / Lapsed | 1936-10-17 | 1941-12-09 | 0 | Details |
| US2261002A | Organic nitrogen compounds | Expired / Lapsed | 1941-06-17 | 1941-10-28 | 0 | Details |
| US2259524A | Method for polymerizing and molding unsaturated methylene c… | Expired / Lapsed | 1940-02-23 | 1941-10-21 | 0 | Details |
| US2259512A | Mixed anhydrides of formic acid and acrylic and the alpha s… | Expired / Lapsed | 1939-04-01 | 1941-10-21 | 0 | Details |
| US2257355A | Method for attaching couplings to hose | Expired / Lapsed | 1938-11-07 | 1941-09-30 | 0 | Details |
| US2256483A | Synthetic spongy material | Expired / Lapsed | 1939-06-21 | 1941-09-23 | 0 | Details |
| US2253089A | Spinning apparatus and method | Expired / Lapsed | 1939-02-18 | 1941-08-19 | 0 | Details |
| US2252684A | Apparatus for the production of artificial structures | Expired / Lapsed | 1938-11-01 | 1941-08-19 | 0 | Details |
| US2251268A | Article of manufacture | Expired / Lapsed | 1940-04-06 | 1941-08-05 | 0 | Details |
| US2251508A | Treatment of polyamides | Expired / Lapsed | 1939-08-04 | 1941-08-05 | 0 | Details |
| US2251519A | Process for making polymeric materials | Expired / Lapsed | 1939-02-07 | 1941-08-05 | 0 | Details |
| US2249756A | Process | Expired / Lapsed | 1938-10-05 | 1941-07-22 | 0 | Details |
| US2249800A | Hydraulic fluid | Expired / Lapsed | 1936-04-24 | 1941-07-22 | 0 | Details |
| US2246092A | Bearing | Expired / Lapsed | 1940-07-26 | 1941-06-17 | 0 | Details |
| US2246086A | Bearing | Expired / Lapsed | 1940-01-08 | 1941-06-17 | 0 | Details |
| US2246101A | Floor covering | Expired / Lapsed | 1938-01-14 | 1941-06-17 | 0 | Details |
| US2245040A | Manufacture of vinyl resins | Expired / Lapsed | 1940-03-12 | 1941-06-10 | 0 | Details |
| US2244703A | Water soluble salts of interpolymers containing methacrylic… | Expired / Lapsed | 1938-04-16 | 1941-06-10 | 0 | Details |
| US2244702A | Methacrylate polymerization products | Expired / Lapsed | 1938-04-16 | 1941-06-10 | 0 | Details |
| US2244192A | Preparation of polyamides | Expired / Lapsed | 1939-09-08 | 1941-06-03 | 0 | Details |
| US2243853A | Method of inhibiting corrosion | Expired / Lapsed | 1939-02-09 | 1941-06-03 | 0 | Details |
| US2244208A | Polymeric material | Expired / Lapsed | 1937-10-22 | 1941-06-03 | 0 | Details |
| US2243220A | Apparatus for the application of coating compositions | Expired / Lapsed | 1938-06-29 | 1941-05-27 | 0 | Details |
| US2242117A | Method of making blasting initiators | Expired / Lapsed | 1937-12-24 | 1941-05-13 | 0 | Details |
| US2238694A | Polymeric materials | Expired / Lapsed | 1939-05-15 | 1941-04-15 | 0 | Details |
| US2238681A | Container closure | Expired / Lapsed | 1939-03-16 | 1941-04-15 | 0 | Details |
| US2238651A | Inhibition of corrosion | Expired / Lapsed | 1937-05-21 | 1941-04-15 | 0 | Details |
| US2236545A | Cellulose glycolic acid | Expired / Lapsed | 1938-10-08 | 1941-04-01 | 0 | Details |
| US2236061A | Method of making films, threads, and the like | Expired / Lapsed | 1937-05-27 | 1941-03-25 | 0 | Details |
| US2234204A | Plastic polymer of butadiene and process of producing same | Expired / Lapsed | 1939-03-28 | 1941-03-11 | 0 | Details |
| US2233358A | Pigments and process for producing the same | Expired / Lapsed | 1938-12-16 | 1941-02-25 | 0 | Details |
| US2227517A | Plastic polymer and process of producing the same | Expired / Lapsed | 1937-07-30 | 1941-01-07 | 0 | Details |
| US2226529A | Synthetic filament | Expired / Lapsed | 1937-11-10 | 1940-12-31 | 0 | Details |
| US2226075A | Soap product | Expired / Lapsed | 1938-04-22 | 1940-12-24 | 0 | Details |
| US2217113A | Synthetic wool | Expired / Lapsed | 1938-09-29 | 1940-10-08 | 0 | Details |
| US2214397A | Plasticized synthetic linear polyamide composition | Expired / Lapsed | 1938-07-25 | 1940-09-10 | 0 | Details |
| US2214405A | Plasticized synthetic linear polyamide composition | Expired / Lapsed | 1938-07-25 | 1940-09-10 | 0 | Details |
| US2214442A | Synthetic polymer | Expired / Lapsed | 1936-09-04 | 1940-09-10 | 0 | Details |
| US2213544A | Manufacture of chemically pure hydrochloric acid | Expired / Lapsed | 1937-04-16 | 1940-09-03 | 0 | Details |
| US2212770A | Process for forming films from synthetic linear polymers | Expired / Lapsed | 1939-07-12 | 1940-08-27 | 0 | Details |
| US2212786A | Production of sulphonyl chlorides of olefin polymers | Expired / Lapsed | 1939-05-01 | 1940-08-27 | 0 | Details |
| US2212772A | Synthetic polymers and shaped articles therefrom | Expired / Lapsed | 1937-02-15 | 1940-08-27 | 0 | Details |
| US2212155A | Process for polymerizing ethylene | Expired / Lapsed | 1938-11-01 | 1940-08-20 | 0 | Details |
| US2211961A | Artificial product and method for producing same | Expired / Lapsed | 1937-04-08 | 1940-08-20 | 0 | Details |
| US2211951A | Artificial cellulosic material bonded to rubber and method … | Expired / Lapsed | 1936-04-11 | 1940-08-20 | 0 | Details |
| US2211959A | Artificial cellulosic material bonded to rubber and method … | Expired / Lapsed | 1936-02-15 | 1940-08-20 | 0 | Details |
| US2210161A | Production of filamentary structures | Expired / Lapsed | 1937-10-23 | 1940-08-06 | 0 | Details |
| US2208135A | Filtering device | Expired / Lapsed | 1938-11-16 | 1940-07-16 | 0 | Details |
| US2207723A | Glaze for ceramic decoration | Expired / Lapsed | 1936-02-26 | 1940-07-16 | 0 | Details |
| US2206046A | Cellulosic pellicles coated with antisticking agent | Expired / Lapsed | 1938-02-02 | 1940-07-02 | 0 | Details |
| US2205042A | Softening of textile materials and compositions therefor | Expired / Lapsed | 1937-10-26 | 1940-06-18 | 0 | Details |
| US2200282A | Vapor phase catalytic hydrogenation of adiponitrile | Expired / Lapsed | 1938-03-17 | 1940-05-14 | 0 | Details |
| US2199411A | Artificial structure and method for producing same | Expired / Lapsed | 1938-11-01 | 1940-05-07 | 0 | Details |
| US2197896A | Artificial wool | Expired / Lapsed | 1937-02-15 | 1940-04-23 | 0 | Details |
| US2196246A | Manufacture of chemically pure hydrochloric acid | Expired / Lapsed | 1937-04-16 | 1940-04-09 | 0 | Details |
| US2193563A | Rutile pigment from barium titanate | Expired / Lapsed | 1939-03-10 | 1940-03-12 | 0 | Details |
| US2193529A | Polyamides | Expired / Lapsed | 1936-06-05 | 1940-03-12 | 0 | Details |
| US2188332A | Flexible coated article | Expired / Lapsed | 1937-02-15 | 1940-01-30 | 0 | Details |
| US2187146A | Process of coagulation | Expired / Lapsed | 1936-10-24 | 1940-01-16 | 0 | Details |
| US2184310A | Photographic and printing media | Expired / Lapsed | 1937-06-10 | 1939-12-26 | 0 | Details |
| US2181140A | Catalytic hydrogenation of epsiloncaprolactam to amines | Expired / Lapsed | 1938-09-29 | 1939-11-28 | 0 | Details |
| US2181663A | Diurethane-diamine polymeric materials | Expired / Lapsed | 1938-05-10 | 1939-11-28 | 0 | Details |
| US2177637A | Polymeric material | Expired / Lapsed | 1938-09-14 | 1939-10-31 | 0 | Details |
| US2175249A | Ignition composition | Expired / Lapsed | 1937-10-28 | 1939-10-10 | 0 | Details |
| US2172374A | Polymerization process | Expired / Lapsed | 1937-11-09 | 1939-09-12 | 0 | Details |
| US2173005A | Resinous products from aldehydes and acrylic amides | Expired / Lapsed | 1936-07-08 | 1939-09-12 | 0 | Details |
| US2171805A | Resilient material | Expired / Lapsed | 1937-07-02 | 1939-09-05 | 0 | Details |
| US2171764A | Method for making seamless tubing | Expired / Lapsed | 1935-03-16 | 1939-09-05 | 0 | Details |
| US2167867A | Lubricant | Expired / Lapsed | 1936-05-07 | 1939-08-01 | 0 | Details |
| US2168027A | Apparatus for the production of filaments, threads, and the… | Expired / Lapsed | 1935-12-07 | 1939-08-01 | 0 | Details |
| US2166151A | Catalytic hydrogenation of adiponitriles to produce hexamet… | Expired / Lapsed | 1937-02-23 | 1939-07-18 | 0 | Details |
| US2164426A | Thread production apparatus | Expired / Lapsed | 1937-06-08 | 1939-07-04 | 0 | Details |
| US2163109A | Chemical process and products therefrom | Expired / Lapsed | 1936-04-03 | 1939-06-20 | 0 | Details |
| US2161798A | Chemical process | Expired / Lapsed | 1937-10-15 | 1939-06-13 | 0 | Details |
| US2160576A | Preparation of anhydrous boron fluoride | Expired / Lapsed | 1936-10-10 | 1939-05-30 | 0 | Details |
| US2154436A | Abrasive | Expired / Lapsed | 1937-04-13 | 1939-04-18 | 0 | Details |
| US2146306A | Treatment of polymeric synthetic resins | Expired / Lapsed | 1937-08-14 | 1939-02-07 | 0 | Details |
| US2145242A | Process of making aliphatic polyureas | Expired / Lapsed | 1937-07-02 | 1939-01-31 | 0 | Details |
| US2141169A | Process of making shaped articles from synthetic polymers | Expired / Lapsed | 1937-02-15 | 1938-12-27 | 0 | Details |
| US2139013A | Pigments | Expired / Lapsed | 1937-03-03 | 1938-12-06 | 0 | Details |
| US2138763A | Amino alcohol esters of the alpha substituted acrylic acids | Expired / Lapsed | 1938-03-30 | 1938-11-29 | 0 | Details |
| US2136424A | Process of polymerization | Expired / Lapsed | 1937-06-02 | 1938-11-15 | 0 | Details |
| US2133257A | Polymerization process | Expired / Lapsed | 1935-04-10 | 1938-10-11 | 0 | Details |
| US2130948A | Synthetic fiber | Expired / Lapsed | 1937-04-09 | 1938-09-20 | 0 | Details |
| US2129666A | Esters of methacrylic acid | Expired / Lapsed | 1934-07-14 | 1938-09-13 | 0 | Details |
| US2129662A | Esters of methacrylic acid | Expired / Lapsed | 1934-07-14 | 1938-09-13 | 0 | Details |
| US2129722A | Esters of methacrylic acid | Expired / Lapsed | 1934-07-14 | 1938-09-13 | 0 | Details |
| US2128635A | Laminated structure and method for preparing same | Expired / Lapsed | 1935-03-23 | 1938-08-30 | 0 | Details |
| US2128229A | Treatment of cellulosic materials and products resulting th… | Expired / Lapsed | 1935-03-23 | 1938-08-30 | 0 | Details |
| US2122433A | Coated films and method of making the same | Expired / Lapsed | 1936-06-17 | 1938-07-05 | 0 | Details |
| US2122781A | Parasiticides | Expired / Lapsed | 1935-05-16 | 1938-07-05 | 0 | Details |
| US2122246A | Method of making ornamental plastic rods | Expired / Lapsed | 1936-06-24 | 1938-06-28 | 0 | Details |
| US2120227A | Purification of glycerol | Expired / Lapsed | 1937-04-21 | 1938-06-14 | 0 | Details |
| US2120006A | Molding organic compounds | Expired / Lapsed | 1935-04-26 | 1938-06-07 | 0 | Details |
| US2118501A | Ignition compositions | Expired / Lapsed | 1937-07-08 | 1938-05-24 | 0 | Details |
| US2118101A | Coated fabric | Expired / Lapsed | 1935-04-27 | 1938-05-24 | 0 | Details |
| US2116867A | Glue, adhesive, and the like | Expired / Lapsed | 1934-04-11 | 1938-05-10 | 0 | Details |
| US2117085A | Process of preparing laminated material | Expired / Lapsed | 1933-09-28 | 1938-05-10 | 0 | Details |
| US2116318A | Electrical equipment | Expired / Lapsed | 1935-07-31 | 1938-05-03 | 0 | Details |
| US2111272A | Abrasive material | Expired / Lapsed | 1936-08-18 | 1938-03-15 | 0 | Details |
| US2109340A | New catalysts | Expired / Lapsed | 1934-10-11 | 1938-02-22 | 0 | Details |
| US2108805A | Transparent materials and method of producing same | Expired / Lapsed | 1934-06-04 | 1938-02-22 | 0 | Details |
| US2107852A | Sizing fabric | Expired / Lapsed | 1934-08-17 | 1938-02-08 | 0 | Details |
| US2102638A | Hydraulic fluid | Expired / Lapsed | 1933-02-24 | 1937-12-21 | 0 | Details |
| US2102205A | Cellulose mixed ethers and process for the preparation ther… | Expired / Lapsed | 1936-01-23 | 1937-12-14 | 0 | Details |
| US2102207A | Coated paper and paper-coating compositions | Expired / Lapsed | 1936-01-23 | 1937-12-14 | 0 | Details |
| US2098534A | Moistureproof article | Expired / Lapsed | 1934-12-21 | 1937-11-09 | 0 | Details |
| US2091265A | Flexible noncollapsible tubing | Expired / Lapsed | 1936-01-18 | 1937-08-31 | 0 | Details |
| US2082797A | Cellulose ethers | Expired / Lapsed | 1932-12-08 | 1937-06-08 | 0 | Details |
| US2071251A | Fiber and method of producing it | Expired / Lapsed | 1933-03-14 | 1937-02-16 | 0 | Details |
| US2071250A | Linear condensation polymers | Expired / Lapsed | 1931-07-03 | 1937-02-16 | 0 | Details |
| US2067234A | Pigmented granular polymers | Expired / Lapsed | 1936-03-10 | 1937-01-12 | 0 | Details |
| US2060715A | Synthetic resins | Expired / Lapsed | 1933-01-13 | 1936-11-10 | 0 | Details |
| US2057673A | Preparation of polymerized organic compounds | Expired / Lapsed | 1935-06-26 | 1936-10-20 | 0 | Details |
| US2056794A | Resin compositions and process of preparing same | Expired / Lapsed | 1934-04-26 | 1936-10-06 | 0 | Details |
| US2046267A | Pigments | Expired / Lapsed | 1933-08-24 | 1936-06-30 | 0 | Details |
| US2040944A | Process for producing polyhydroxy alcohols | Expired / Lapsed | 1933-09-22 | 1936-05-19 | 0 | Details |
| US2030226A | Casein dispersion | Expired / Lapsed | 1932-02-27 | 1936-02-11 | 0 | Details |
| US2029410A | Chemical products and processes for producing same | Expired / Lapsed | 1933-04-11 | 1936-02-04 | 0 | Details |
| US2025073A | Cellulose derivative and method of making the same | Expired / Lapsed | 1934-01-09 | 1935-12-24 | 0 | Details |
| US2024749A | Preparation of halogenated ethers | Expired / Lapsed | 1932-08-04 | 1935-12-17 | 0 | Details |
| US2005619A | Esters of acids of phosphorus | Expired / Lapsed | 1934-11-10 | 1935-06-18 | 0 | Details |
| US2004466A | Abrasive | Expired / Lapsed | 1931-04-28 | 1935-06-11 | 0 | Details |
| US2002622A | Natural and artificial rubber latex | Expired / Lapsed | 1933-05-20 | 1935-05-28 | 0 | Details |
| US1995991A | Direct oxidation of olefine hydrocarbons | Expired / Lapsed | 1931-04-28 | 1935-03-26 | 0 | Details |
| US1993738A | Myristyl esters of polycarboxylic acids | Expired / Lapsed | 1934-08-31 | 1935-03-12 | 0 | Details |
| US1984411A | Method of case hardening | Expired / Lapsed | 1933-06-08 | 1934-12-18 | 0 | Details |
| US1978953A | Method of preparing an alkali metal perborate | Expired / Lapsed | 1928-10-17 | 1934-10-30 | 0 | Details |
| US1977625A | Process of decorating glass | Expired / Lapsed | 1931-11-11 | 1934-10-23 | 0 | Details |
| US1975959A | Polymerization of vinyl compounds in the presence of film f… | Expired / Lapsed | 1930-05-13 | 1934-10-09 | 0 | Details |
| US1967863A | Coated material and method of making same | Expired / Lapsed | 1931-11-02 | 1934-07-24 | 0 | Details |
| US1937621A | Electrolytic apparatus | Expired / Lapsed | 1931-05-08 | 1933-12-05 | 0 | Details |
| US1914097A | Insulated electrical conduit | Expired / Lapsed | 1927-10-26 | 1933-06-13 | 0 | Details |
| US1908202A | Determination of carbon monoxide in a gas mixture | Expired / Lapsed | 1930-04-01 | 1933-05-09 | 0 | Details |
| US1882808A | Ester interchange with organic acids | Expired / Lapsed | 1928-10-12 | 1932-10-18 | 0 | Details |
| US1867014A | Process of polymerizing vinyl derivatives | Expired / Lapsed | 1928-09-22 | 1932-07-12 | 0 | Details |
| US1853771A | Catalytic material and process of producing same | Expired / Lapsed | 1928-01-30 | 1932-04-12 | 0 | Details |
| US1851493A | Noncorrosive alcohols | Expired / Lapsed | 1928-09-11 | 1932-03-29 | 0 | Details |
| US1847711A | Noncorrosive alcoholic solution | Expired / Lapsed | 1928-09-11 | 1932-03-01 | 0 | Details |
| US1802414A | Mine-ventilating tubing | Expired / Lapsed | 1927-04-30 | 1931-04-28 | 0 | Details |
| US1797509A | Electric blasting cap and ignition material for the same | Expired / Lapsed | 1929-03-18 | 1931-03-24 | 0 | Details |
| US1787630A | Mercury compound of para-nitro-aniline and the process of m… | Expired / Lapsed | 1923-10-06 | 1931-01-06 | 0 | Details |
| US1734291A | Cellulose condensation product and process for making same | Expired / Lapsed | 1927-08-19 | 1929-11-05 | 0 | Details |
| US1453048A | Spinneret | Expired / Lapsed | 1920-02-14 | 1923-04-24 | 0 | Details |
| US1439743A | Process for finishing footwear | Expired / Lapsed | 1918-12-11 | 1922-12-26 | 0 | Details |