Dow Chemical Co
Dow ChemicActive Patents
0
Total Holdings
206
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB1200106A | Improvements in or relating to absorbent medical, surgical … | Expired / Lapsed | 1967-05-26 | — | 0 | Details |
| GB817981A | Formed articles comprising expanded thermoplastic resinous … | Expired / Lapsed | 1957-03-06 | — | 0 | Details |
| US5007930A | Composites of unsintered calcium phosphates and synthetic b… | Expired / Lapsed | 1990-08-06 | 1991-04-16 | 11 | Details |
| US4994396A | Method for measuring the concentration or partial pressure … | Expired / Lapsed | 1987-12-14 | 1991-02-19 | 22 | Details |
| US4912142A | Antistatic phase-segregated polyurethanes | Expired / Lapsed | 1988-11-16 | 1990-03-27 | 16 | Details |
| US4842604A | Composites of unsintered calcium phosphates and synthetic b… | Expired / Lapsed | 1987-06-01 | 1989-06-27 | 9 | Details |
| US4756964A | Barrier films having an amorphous carbon coating and method… | Expired / Lapsed | 1986-09-29 | 1988-07-12 | 26 | Details |
| US4680200A | Method for preparing colloidal size particulate | Expired / Lapsed | 1985-07-22 | 1987-07-14 | 7 | Details |
| US4659747A | Cyclohexanedimethanol/diamine mixtures as RIM extenders | Expired / Lapsed | 1986-05-15 | 1987-04-21 | 25 | Details |
| US4530941A | Reaction injection molded polyurethanes employing high mole… | Expired / Lapsed | 1983-11-02 | 1985-07-23 | 26 | Details |
| US4325856A | Sequential emulsion polymerization process | Expired / Lapsed | 1980-01-02 | 1982-04-20 | 12 | Details |
| US4313805A | Chlorine cell catholyte series flow | Expired / Lapsed | 1980-03-03 | 1982-02-02 | 12 | Details |
| US4256622A | Curable hydroxy resin compositions | Expired / Lapsed | 1980-01-07 | 1981-03-17 | 17 | Details |
| US4246363A | Reaction injection molded polyurethanes having particular f… | Expired / Lapsed | 1979-06-18 | 1981-01-20 | 44 | Details |
| US4148945A | Process of metal plating on plastics | Expired / Lapsed | 1974-02-04 | 1979-04-10 | 18 | Details |
| US4116736A | Method of making a foam plastic cushion having a peripheral… | Expired / Lapsed | 1976-10-01 | 1978-09-26 | 9 | Details |
| US4057474A | Electrolytic production of alkali metal hydroxide | Expired / Lapsed | 1976-06-25 | 1977-11-08 | 17 | Details |
| US4056502A | Absorbent articles made from carboxylic polyelectrolyte sol… | Expired / Lapsed | 1974-08-05 | 1977-11-01 | 16 | Details |
| US4028037A | Tube treating and apparatus therefor | Expired / Lapsed | 1976-05-26 | 1977-06-07 | 4 | Details |
| US4017653A | Absorbent articles and methods for their preparation | Expired / Lapsed | 1975-05-01 | 1977-04-12 | 18 | Details |
| US3957529A | Method for cleaning and passivating a metal surface | Expired / Lapsed | 1974-06-03 | 1976-05-18 | 12 | Details |
| US3900030A | Catamenial tampons | Expired / Lapsed | 1974-06-10 | 1975-08-19 | 5 | Details |
| US3891767A | Certain triaryl tin compounds as chemosterilants | Expired / Lapsed | 1970-01-02 | 1975-06-24 | 23 | Details |
| US3885820A | Tubing connector | Expired / Lapsed | 1973-11-05 | 1975-05-27 | 6 | Details |
| US3882071A | Rapid setting non-elastomeric polyurethane compositions pre… | Expired / Lapsed | 1973-12-17 | 1975-05-06 | 37 | Details |
| US3819813A | Method for producing an alkali metal carbonate | Expired / Lapsed | 1971-09-09 | 1974-06-25 | 0 | Details |
| US3804663A | Method of internally coating rigid or semi-rigid plastic co… | Expired / Lapsed | 1971-05-26 | 1974-04-16 | 17 | Details |
| US3798836A | A hydroponic bed for growing plants | Expired / Lapsed | 1972-12-04 | 1974-03-26 | 4 | Details |
| US3795318A | Control of ultrafiltration rates during hemodialysis with h… | Expired / Lapsed | 1972-05-26 | 1974-03-05 | 7 | Details |
| US3773882A | Method for multilayer coextrusion | Expired / Lapsed | 1971-10-01 | 1973-11-20 | 0 | Details |
| US3755034A | Method for making a hollow fiber separatory element | Expired / Lapsed | 1971-12-10 | 1973-08-28 | 10 | Details |
| US3684554A | Method for the vapor phase surface sulfonation of plastic w… | Expired / Lapsed | 1969-06-02 | 1972-08-15 | 0 | Details |
| US3681092A | Fresh meat packaging | Expired / Lapsed | 1968-10-25 | 1972-08-01 | 0 | Details |
| US3673126A | Continuous process for making expandable thermoplastic resi… | Expired / Lapsed | 1967-11-13 | 1972-06-27 | 3 | Details |
| US3636133A | Epoxy resin adhesive compositions containing an isocyanate … | Expired / Lapsed | 1969-11-17 | 1972-01-18 | 0 | Details |
| US3616935A | Preparation of antithrombogenic surfaces | Expired / Lapsed | 1970-02-05 | 1971-11-02 | 8 | Details |
| US3608946A | Device for handling of a filter membrane | Expired / Lapsed | 1968-11-19 | 1971-09-28 | 5 | Details |
| US3607350A | Electroless plating of plastics | Expired / Lapsed | 1967-12-05 | 1971-09-21 | 8 | Details |
| US3590227A | Method and apparatus for digital measurment and control of … | Expired / Lapsed | 1968-05-31 | 1971-06-29 | 71 | Details |
| US3581776A | Pipe insulation structure | Expired / Lapsed | 1968-10-02 | 1971-06-01 | 4 | Details |
| US3581204A | Electromechanical recorder automatic zero apparatus | Expired / Lapsed | 1969-04-14 | 1971-05-25 | 6 | Details |
| US3577548A | Methods for sterilizing insects with triaryltin compounds | Expired / Lapsed | 1964-12-31 | 1971-05-04 | 0 | Details |
| US3558330A | Packaging film and package | Expired / Lapsed | 1967-09-21 | 1971-01-26 | 0 | Details |
| US3557265A | Method of extruding laminates | Expired / Lapsed | 1967-12-29 | 1971-01-19 | 0 | Details |
| US3550832A | Sealed containers | Expired / Lapsed | 1969-04-01 | 1970-12-29 | 0 | Details |
| US3520441A | Container | Expired / Lapsed | 1969-01-02 | 1970-07-14 | 0 | Details |
| US3509230A | Thermosettable epoxy resin adhesive compositions containing… | Expired / Lapsed | 1968-12-04 | 1970-04-28 | 0 | Details |
| US3494457A | Abuse resistant bag | Expired / Lapsed | 1968-08-05 | 1970-02-10 | 0 | Details |
| US3480168A | Thermoplastic pressure vessel for carbonated beverages | Expired / Lapsed | 1967-12-26 | 1969-11-25 | 0 | Details |
| US3441142A | Nonthrombogenic plastic membranes | Expired / Lapsed | 1966-07-21 | 1969-04-29 | 0 | Details |
| US3432438A | Reducing acid aqueous mediums containing bivalent tin chela… | Expired / Lapsed | 1967-05-05 | 1969-03-11 | 0 | Details |
| US3429954A | Method of making a polymer-lined pipe | Expired / Lapsed | 1965-03-22 | 1969-02-25 | 0 | Details |
| US3423491A | Permselective hollow fibers and method of making | Expired / Lapsed | 1964-09-02 | 1969-01-21 | 0 | Details |
| US3422008A | Wound hollow fiber permeability apparatus and process of ma… | Expired / Lapsed | 1963-10-24 | 1969-01-14 | 0 | Details |
| US3414499A | Simultaneous polymerization of a plurality of monomer strea… | Expired / Lapsed | 1965-02-25 | 1968-12-03 | 0 | Details |
| US3409123A | Interlocking container and lid | Expired / Lapsed | 1966-11-18 | 1968-11-05 | 0 | Details |
| US3395217A | Process for the control of osseous hemorrhage | Expired / Lapsed | 1964-06-19 | 1968-07-30 | 0 | Details |
| US3373876A | Artificial body organ apparatus | Expired / Lapsed | 1966-05-12 | 1968-03-19 | 0 | Details |
| US3362846A | Method of coating particulate material with metal carbonates | Expired / Lapsed | 1964-04-06 | 1968-01-09 | 0 | Details |
| US3361842A | Liquid copolymers of ethylene, another alpha olefin and car… | Expired / Lapsed | 1963-04-25 | 1968-01-02 | 0 | Details |
| US3358059A | Method of filling enclosures with low density particulated … | Expired / Lapsed | 1964-04-20 | 1967-12-12 | 4 | Details |
| US3342729A | Permeability separatory cell and apparatus and method of us… | Expired / Lapsed | 1964-12-09 | 1967-09-19 | 2 | Details |
| US3338997A | Method and apparatus for forming plastic containers | Expired / Lapsed | 1963-03-14 | 1967-08-29 | 2 | Details |
| US3326536A | Mixing apparatus | Expired / Lapsed | 1966-02-28 | 1967-06-20 | 2 | Details |
| US3311583A | Terpolymer acrylates-acrylic acid-hydroxyalkyl esters of ac… | Expired / Lapsed | 1963-11-06 | 1967-03-28 | 2 | Details |
| US3302241A | Apparatus for preparation of plastic tubes | Expired / Lapsed | 1964-11-05 | 1967-02-07 | 2 | Details |
| US3291879A | Method and apparatus for fabricating plastic web | Expired / Lapsed | 1965-01-21 | 1966-12-13 | 4 | Details |
| US3279239A | Method and apparatus for measurement of thermal conductivity | Expired / Lapsed | 1964-04-29 | 1966-10-18 | 2 | Details |
| US3248950A | Stop mechanism for pipette filling device | Expired / Lapsed | 1964-05-25 | 1966-05-03 | 2 | Details |
| US3230127A | Process for forming plastic coated articles | Expired / Lapsed | 1962-03-05 | 1966-01-18 | 2 | Details |
| US3228877A | Permeability separatory apparatus and process utilizing hol… | Expired / Lapsed | 1961-06-16 | 1966-01-11 | 2 | Details |
| US3228876A | Permeability separatory apparatus, permeability separatory … | Expired / Lapsed | 1960-09-19 | 1966-01-11 | 2 | Details |
| US3218684A | Process of making cellular metal structures | Expired / Lapsed | 1962-08-31 | 1965-11-23 | 2 | Details |
| US3186941A | Water softening with fine cation exchange tubes | Expired / Lapsed | 1962-08-02 | 1965-06-01 | 2 | Details |
| US3184149A | Re-sealable bag | Expired / Lapsed | 1962-10-24 | 1965-05-18 | 2 | Details |
| US3179606A | Cellular polyurethane plastic material with rapid high stre… | Expired / Lapsed | 1960-12-19 | 1965-04-20 | 2 | Details |
| US3154021A | Pumping apparatus | Expired / Lapsed | 1962-03-14 | 1964-10-27 | 2 | Details |
| US3151799A | Packaging tray | Expired / Lapsed | 1962-04-04 | 1964-10-06 | 2 | Details |
| US3152203A | Preparation of collagen films | Expired / Lapsed | 1961-05-31 | 1964-10-06 | 2 | Details |
| US3128200A | Coated alkenyl aromatic article and method of coating | Expired / Lapsed | 1961-11-24 | 1964-04-07 | 2 | Details |
| US3106487A | Process for imparting plastic release characteristics to po… | Expired / Lapsed | 1960-05-19 | 1963-10-08 | 1 | Details |
| US3104704A | Fluid loss control in hydraulic cement slurries | Expired / Lapsed | 1959-08-17 | 1963-09-24 | 2 | Details |
| US3086885A | Non-clumping foamable thermoplastic polymer granules and me… | Expired / Lapsed | 1960-09-22 | 1963-04-23 | 2 | Details |
| US3072558A | Composite anode | Expired / Lapsed | 1961-02-13 | 1963-01-08 | 2 | Details |
| US3072584A | Method of production of multi-celled extruded foamed polyst… | Expired / Lapsed | 1959-12-21 | 1963-01-08 | 2 | Details |
| US3061402A | Wet spinning synthetic fibers | Expired / Lapsed | 1960-11-15 | 1962-10-30 | 2 | Details |
| US3041292A | Composite ion exchange resin bodies | Expired / Lapsed | 1954-12-13 | 1962-06-26 | 2 | Details |
| FR1283953A | Method and apparatus for improving thermoplastic films | Expired / Lapsed | 1960-12-28 | 1962-02-09 | 0 | Details |
| US3011212A | Shaping thermoplastic resinous sheets | Expired / Lapsed | 1959-12-03 | 1961-12-05 | 0 | Details |
| US3009207A | Process for the formation of composite films | Expired / Lapsed | 1957-03-21 | 1961-11-21 | 2 | Details |
| US3008920A | Method of inhibiting homopolymerization in graft copolymers… | Expired / Lapsed | 1959-04-27 | 1961-11-14 | 2 | Details |
| US3004950A | Copolymers of certain organosilicon monomers and n-vinyl cy… | Expired / Lapsed | 1958-12-05 | 1961-10-17 | 2 | Details |
| US3000853A | Thermoplastic compositions having improved light stability | Expired / Lapsed | 1956-12-24 | 1961-09-19 | 0 | Details |
| US2997206A | Automatic catalyst releasing apparatus | Expired / Lapsed | 1959-06-22 | 1961-08-22 | 0 | Details |
| US2988441A | Plant growth medium | Expired / Lapsed | 1959-02-18 | 1961-06-13 | 1 | Details |
| US2982749A | Inverse suspension polymerization of water soluble unsatura… | Expired / Lapsed | 1957-07-15 | 1961-05-02 | 2 | Details |
| US2976567A | Process and apparatus for upgrading thermoplastic film | Expired / Lapsed | 1957-10-16 | 1961-03-28 | 0 | Details |
| US2958905A | Method of fabricating expandable thermoplastic resinous mat… | Expired / Lapsed | 1959-02-05 | 1960-11-08 | 0 | Details |
| US2956855A | Dimensionally stable oriented filaments and method for prod… | Expired / Lapsed | 1955-09-01 | 1960-10-18 | 2 | Details |
| US2948696A | Process for preparing heat sealable films, compositions use… | Expired / Lapsed | 1958-08-01 | 1960-08-09 | 1 | Details |
| US2937066A | Method for treating polyethylene and treated polyethylene a… | Expired / Lapsed | 1955-11-23 | 1960-05-17 | 2 | Details |
| US2913449A | Conjoint halogenation technique | Expired / Lapsed | 1957-01-18 | 1959-11-17 | 2 | Details |
| US2894289A | Method of making permeselective membranes | Expired / Lapsed | 1956-03-01 | 1959-07-14 | 2 | Details |
| US2891058A | Process for the preparation of n-vinyl cyclic amides, carba… | Expired / Lapsed | 1958-06-02 | 1959-06-16 | 3 | Details |
| US2880056A | Synthetic fibers having a natural crimp and method for prep… | Expired / Lapsed | 1956-04-09 | 1959-03-31 | 2 | Details |
| US2853741A | Fibrous article and method of preparing the same from polym… | Expired / Lapsed | 1954-05-27 | 1958-09-30 | 0 | Details |
| US2854625A | Method for determining argon | Expired / Lapsed | 1954-04-21 | 1958-09-30 | 1 | Details |
| US2852813A | Method for handling and processing tubular film | Expired / Lapsed | 1956-03-16 | 1958-09-23 | 2 | Details |
| US2832698A | Method for destaticizing polymeric substances and articles … | Expired / Lapsed | 1956-04-30 | 1958-04-29 | 2 | Details |
| US2827445A | Purification of polymerized olefins prepared with catalytic… | Expired / Lapsed | 1955-09-16 | 1958-03-18 | 2 | Details |
| US2783137A | Grinding compositions and making of same | Expired / Lapsed | 1951-06-08 | 1957-02-26 | 2 | Details |
| US2781291A | Magnesium chelate of ethylenediaminetetraacetic acid for tr… | Expired / Lapsed | 1953-08-21 | 1957-02-12 | 2 | Details |
| US2779721A | Method of drying butylene oxides | Expired / Lapsed | 1954-02-17 | 1957-01-29 | 0 | Details |
| CA534818A | Organofluoro siloxanes containing silicon-fluorine linkages | Expired / Lapsed | — | 1956-12-25 | 0 | Details |
| US2770007A | Film stretching device | Expired / Lapsed | 1952-12-22 | 1956-11-13 | 0 | Details |
| US2740157A | Method and apparatus for shaping plastic foams | Expired / Lapsed | 1951-12-07 | 1956-04-03 | 2 | Details |
| US2737436A | Making continuous fibers from a normally crystalline polyme… | Expired / Lapsed | 1952-12-03 | 1956-03-06 | 2 | Details |
| US2736946A | Polyacrylonitrile fibers having a scaly integument | Expired / Lapsed | 1952-07-03 | 1956-03-06 | 0 | Details |
| US2728950A | Process for producing fibers from films of polymeric materi… | Expired / Lapsed | 1954-05-06 | 1956-01-03 | 2 | Details |
| US2720310A | Extrusion of metal | Expired / Lapsed | 1950-04-03 | 1955-10-11 | 2 | Details |
| US2717424A | Process for producing thin walled tubes from normally cryst… | Expired / Lapsed | 1954-03-01 | 1955-09-13 | 2 | Details |
| US2679932A | Manufacture of magnesium alloy extrusions | Expired / Lapsed | 1953-03-18 | 1954-06-01 | 2 | Details |
| US2666691A | Recording titration apparatus | Expired / Lapsed | 1948-10-13 | 1954-01-19 | 2 | Details |
| US2647236A | Electrical circuit for measuring the ratio of two potentials | Expired / Lapsed | 1948-05-20 | 1953-07-28 | 0 | Details |
| US2634459A | Process for the manufacture of crystalline vinylidene chlor… | Expired / Lapsed | 1951-02-03 | 1953-04-14 | 2 | Details |
| US2632736A | Antifoaming composition | Expired / Lapsed | 1946-08-22 | 1953-03-24 | 2 | Details |
| US2624014A | Refractometer | Expired / Lapsed | 1949-05-31 | 1952-12-30 | 0 | Details |
| US2619256A | Weigh feeder | Expired / Lapsed | 1949-12-09 | 1952-11-25 | 0 | Details |
| US2607077A | Mixing torpedo for plastics extruders | Expired / Lapsed | 1951-06-28 | 1952-08-19 | 0 | Details |
| US2596933A | Means for welding plastic films | Expired / Lapsed | 1951-01-31 | 1952-05-13 | 0 | Details |
| US2576977A | Method of making free-flowing cellular pellets of thermopla… | Expired / Lapsed | 1949-02-10 | 1951-12-04 | 2 | Details |
| US2565265A | Stabilized electrooptical system | Expired / Lapsed | 1949-06-30 | 1951-08-21 | 0 | Details |
| US2546938A | Ion exchange resins and process of treating a solution of a… | Expired / Lapsed | 1946-05-23 | 1951-03-27 | 2 | Details |
| US2543027A | Method of making crinkled fibers | Expired / Lapsed | 1948-09-18 | 1951-02-27 | 2 | Details |
| US2542973A | Method of making crinkled fibers | Expired / Lapsed | 1948-09-18 | 1951-02-27 | 2 | Details |
| US2541064A | Method of controlling the diameter and wall thickness of vi… | Expired / Lapsed | 1948-08-11 | 1951-02-13 | 0 | Details |
| US2540146A | Method for controlled blending of polystyrene with modifiers | Expired / Lapsed | 1948-05-27 | 1951-02-06 | 2 | Details |
| US2537977A | Method of making a shaped thermoplastic cellular product | Expired / Lapsed | 1948-07-15 | 1951-01-16 | 2 | Details |
| US2538002A | Container for and process of preserving perishable foodstuf… | Expired / Lapsed | 1947-11-29 | 1951-01-16 | 0 | Details |
| US2532245A | Thermoplastic compositions with reduced flow viscosity | Expired / Lapsed | 1949-08-26 | 1950-11-28 | 2 | Details |
| US2530409A | Method for polymerizing styrene | Expired / Lapsed | 1948-05-27 | 1950-11-21 | 0 | Details |
| US2530362A | Coagulation of nonelastic polymers | Expired / Lapsed | 1946-11-22 | 1950-11-14 | 2 | Details |
| US2515250A | Method of making and storing compositions comprising thermo… | Expired / Lapsed | 1947-11-07 | 1950-07-18 | 2 | Details |
| US2503819A | Continuous casting | Expired / Lapsed | 1945-12-08 | 1950-04-11 | 0 | Details |
| US2500149A | Sulfonation of copolymers of monovinyl-and polyvinyl-aromat… | Expired / Lapsed | 1947-02-21 | 1950-03-14 | 1 | Details |
| US2495352A | Well repair | Expired / Lapsed | 1945-12-12 | 1950-01-24 | 0 | Details |
| US2488571A | Production of polymeric vinylidene chloride film | Expired / Lapsed | 1947-12-11 | 1949-11-22 | 0 | Details |
| US2480082A | Method of packaging foods to be frozen | Expired / Lapsed | 1947-10-01 | 1949-08-23 | 0 | Details |
| US2476331A | Method of making methyl carboxymethyl cellulose | Expired / Lapsed | 1945-11-15 | 1949-07-19 | 0 | Details |
| US2474228A | Making proteinaceous and fatty foods resistant to microorga… | Expired / Lapsed | 1947-01-13 | 1949-06-28 | 0 | Details |
| US2469999A | Mixing head for extrusion machines | Expired / Lapsed | 1945-05-30 | 1949-05-10 | 0 | Details |
| US2449355A | Internal two-zone heat control for plastics extruders | Expired / Lapsed | 1947-07-28 | 1948-09-14 | 0 | Details |
| US2448433A | Making wrinkle-free film | Expired / Lapsed | 1945-09-10 | 1948-08-31 | 0 | Details |
| US2442319A | Process and catalyst for the dehydrogenation of olefines | Expired / Lapsed | 1944-04-03 | 1948-05-25 | 0 | Details |
| US2440664A | Making lap-welded articles from thermoplastic films | Expired / Lapsed | 1945-07-28 | 1948-04-27 | 0 | Details |
| US2436777A | Organofluorosilanes and method of making same | Expired / Lapsed | 1945-05-30 | 1948-02-24 | 0 | Details |
| US2428608A | Plastic dielectric composition and shielded spark plug term… | Expired / Lapsed | 1942-11-02 | 1947-10-07 | 0 | Details |
| US2414776A | Apparatus for making pipe from thermoplastic resin | Expired / Lapsed | 1944-10-07 | 1947-01-21 | 0 | Details |
| US2409910A | Method of filling containers with resinous foam | Expired / Lapsed | 1944-11-29 | 1946-10-22 | 0 | Details |
| US2409861A | Process and agents for the recovery of magnesium ions from … | Expired / Lapsed | 1942-02-02 | 1946-10-22 | 0 | Details |
| US2399592A | Method of making molded thermoplastic articles | Expired / Lapsed | 1943-09-09 | 1946-04-30 | 0 | Details |
| US2388206A | Release agent for film-casting and embossing operations | Expired / Lapsed | 1942-12-21 | 1945-10-30 | 0 | Details |
| US2386831A | Method and apparatus for continuous analysis of organic mix… | Expired / Lapsed | 1942-09-02 | 1945-10-16 | 0 | Details |
| US2385358A | Method of making fine fibers | Expired / Lapsed | 1944-09-15 | 1945-09-25 | 0 | Details |
| US2365952A | Machine for making plastic helicoidal structures | Expired / Lapsed | 1942-03-12 | 1944-12-26 | 0 | Details |
| US2361369A | Method of and apparatus for producing reticulated articles … | Expired / Lapsed | 1942-10-02 | 1944-10-31 | 0 | Details |
| US2350325A | Unsaturated ester of alkoxy-aryloxy alcohols | Expired / Lapsed | 1941-09-25 | 1944-06-06 | 0 | Details |
| US2348772A | Method of fabricating vinylidene chloride polymers | Expired / Lapsed | 1942-06-01 | 1944-05-16 | 0 | Details |
| US2347615A | Apparatus for treating wells | Expired / Lapsed | 1942-03-02 | 1944-04-25 | 0 | Details |
| US2344511A | Treatment of crystalline vinylidene chloride polymers | Expired / Lapsed | 1941-04-17 | 1944-03-21 | 0 | Details |
| US2341175A | Insoluble polymers derived from styrene | Expired / Lapsed | 1940-03-15 | 1944-02-08 | 0 | Details |
| US2338610A | Method for making fibrous pads or mats | Expired / Lapsed | 1941-10-24 | 1944-01-04 | 0 | Details |
| US2333634A | Copolymerization of vinyl halides with vinylidene halides | Expired / Lapsed | 1940-08-03 | 1943-11-09 | 0 | Details |
| US2331858A | Preparing solutions of cellulose glycollic acid salts | Expired / Lapsed | 1941-03-06 | 1943-10-12 | 0 | Details |
| US2331265A | Ethers of bis-phenols | Expired / Lapsed | 1940-11-07 | 1943-10-05 | 0 | Details |
| US2329033A | Styrene copolymer plastic composition | Expired / Lapsed | 1939-06-05 | 1943-09-07 | 0 | Details |
| US2309370A | Heat treatment of vinylidene chloride polymers | Expired / Lapsed | 1940-12-12 | 1943-01-26 | 0 | Details |
| US2308692A | Greaseproof paper | Expired / Lapsed | 1941-03-06 | 1943-01-19 | 0 | Details |
| US2299230A | Positively locking fastener | Expired / Lapsed | 1942-07-17 | 1942-10-20 | 0 | Details |
| US2297709A | Hot-melt coating composition comprising cellulose ethers | Expired / Lapsed | 1939-05-16 | 1942-10-06 | 0 | Details |
| US2291670A | Method of coating wire and the like | Expired / Lapsed | 1939-08-31 | 1942-08-04 | 0 | Details |
| US2288995A | Surface treatment of magnesium and its alloys | Expired / Lapsed | 1940-04-13 | 1942-07-07 | 0 | Details |
| US2285626A | Substituted phenol | Expired / Lapsed | 1940-04-27 | 1942-06-09 | 0 | Details |
| US2270186A | Film drawing and trimming machine | Expired / Lapsed | 1940-10-04 | 1942-01-13 | 0 | Details |
| US2270182A | Manufacture of purified vinyl aromatic resins in powdered f… | Expired / Lapsed | 1939-05-19 | 1942-01-13 | 0 | Details |
| US2256160A | Making polymerized vinyl aromatic articles | Expired / Lapsed | 1938-11-18 | 1941-09-16 | 0 | Details |
| US2238020A | Vinylidene chloride copolymer | Expired / Lapsed | 1939-06-02 | 1941-04-08 | 0 | Details |
| US2237315A | Coating filamentous articles with vinylidene chloride compo… | Expired / Lapsed | 1938-08-24 | 1941-04-08 | 0 | Details |
| US2233442A | Polymeric vinylidene chloride article | Expired / Lapsed | 1938-05-31 | 1941-03-04 | 0 | Details |
| US2232927A | Making unsaturated ethers of cellulose | Expired / Lapsed | 1939-01-28 | 1941-02-25 | 0 | Details |
| US2224852A | Molding polystyrene and related resins | Expired / Lapsed | 1938-06-28 | 1940-12-17 | 0 | Details |
| US2222012A | Alkylation of aromatic compounds | Expired / Lapsed | 1938-04-12 | 1940-11-19 | 0 | Details |
| US2220545A | Method of welding thermoplastic materials | Expired / Lapsed | 1937-11-20 | 1940-11-05 | 0 | Details |
| US2160934A | Polymerization of vinylidene chloride | Expired / Lapsed | 1937-09-16 | 1939-06-06 | 0 | Details |
| US2158957A | Hydroxy-alkyl ethers of substituted phenols | Expired / Lapsed | 1937-02-20 | 1939-05-16 | 0 | Details |
| US2157009A | Phenylmercuric aliphatic hydroxy carboxylates and method of… | Expired / Lapsed | 1933-07-31 | 1939-05-02 | 0 | Details |
| US2130525A | Hydroxy alkyl ethers of hydrogenated hydroxy diphenyl compo… | Expired / Lapsed | 1937-02-20 | 1938-09-20 | 0 | Details |
| US2121731A | Cellulose ether recovery | Expired / Lapsed | 1936-07-30 | 1938-06-21 | 0 | Details |
| US1959286A | Method of storing and using heat and means therefor | Expired / Lapsed | 1930-07-07 | 1934-05-15 | 0 | Details |
| US1942354A | Article of manufacture | Expired / Lapsed | 1930-12-11 | 1934-01-02 | 0 | Details |
| US1923710A | Apparatus for producing alpha composite reenforced sheet | Expired / Lapsed | 1930-03-19 | 1933-08-22 | 0 | Details |
| US1867071A | Article of manufacture | Expired / Lapsed | 1929-03-08 | 1932-07-12 | 0 | Details |
| US1856912A | Improved method of shooting wells | Expired / Lapsed | 1930-06-04 | 1932-05-03 | 0 | Details |
| US1716403A | Bag | Expired / Lapsed | 1926-01-23 | 1929-06-11 | 0 | Details |
| US1411422A | Lachrymatory gas | Expired / Lapsed | 1920-03-31 | 1922-04-04 | 0 | Details |
| US1284618A | Process of and apparatus for electrolytic production of cau… | Expired / Lapsed | 1915-08-12 | 1918-11-12 | 0 | Details |