Shell Development Co
Shell DeveActive Patents
0
Total Holdings
104
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2909494A | Process for resinifying polyepoxides and resulting products | Expired / Lapsed | 1955-11-22 | 1959-10-20 | 2 | Details |
| US2906720A | Composition comprising aromatic petroleum residue and polye… | Expired / Lapsed | 1957-04-24 | 1959-09-29 | 2 | Details |
| US2904535A | Curing polyalkyleneether polyurethanes with aromatic dhsocy… | Expired / Lapsed | 1956-02-27 | 1959-09-15 | 2 | Details |
| US2854215A | Offshore oil well installation | Expired / Lapsed | 1956-03-05 | 1958-09-30 | 2 | Details |
| US2849992A | Stratified charge internal combustion engine | Expired / Lapsed | 1955-12-15 | 1958-09-02 | 0 | Details |
| US2841244A | Process of lubricating engines with vaporous lubricants | Expired / Lapsed | 1954-10-18 | 1958-07-01 | 2 | Details |
| US2838644A | Electronic thermoregulator | Expired / Lapsed | 1956-01-20 | 1958-06-10 | 0 | Details |
| US2817646A | Process for preparing lactams and amides | Expired / Lapsed | 1955-12-06 | 1957-12-24 | 2 | Details |
| US2813127A | Diperoxides | Expired / Lapsed | 1956-04-19 | 1957-11-12 | 1 | Details |
| US2801229A | Curing glycidyl polyethers | Expired / Lapsed | 1953-07-29 | 1957-07-30 | 2 | Details |
| US2783027A | Method and apparatus for submerged well drilling | Expired / Lapsed | 1954-04-20 | 1957-02-26 | 0 | Details |
| US2781970A | Analog computer | Expired / Lapsed | 1951-10-08 | 1957-02-19 | 0 | Details |
| US2776817A | Drilling apparatus | Expired / Lapsed | 1952-07-21 | 1957-01-08 | 0 | Details |
| US2764184A | Expandable tube plug | Expired / Lapsed | 1954-05-24 | 1956-09-25 | 0 | Details |
| US2752269A | Treatment of textile materials | Expired / Lapsed | 1951-12-01 | 1956-06-26 | 2 | Details |
| US2718982A | Flow control system | Expired / Lapsed | 1951-09-21 | 1955-09-27 | 2 | Details |
| US2707440A | Oil well pump control system | Expired / Lapsed | 1951-07-21 | 1955-05-03 | 0 | Details |
| US2682515A | Adhesive composition containing polyepoxide materials | Expired / Lapsed | 1952-07-05 | 1954-06-29 | 2 | Details |
| US2682514A | Compositions containing glycidyl polyether of a polyhydric … | Expired / Lapsed | 1952-02-25 | 1954-06-29 | 2 | Details |
| US2681705A | Shutoff apparatus for dual production wells | Expired / Lapsed | 1951-06-05 | 1954-06-22 | 0 | Details |
| US2676132A | 1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4alpha,5,6,7,8,8alph… | Expired / Lapsed | 1950-04-18 | 1954-04-20 | 3 | Details |
| US2672392A | Ultrasonic flaw detecting and recording system | Expired / Lapsed | 1951-09-17 | 1954-03-16 | 0 | Details |
| US2665885A | Apparatus for offshore coring | Expired / Lapsed | 1948-10-25 | 1954-01-12 | 0 | Details |
| US2654242A | Measurement of water vapor in gases | Expired / Lapsed | 1950-07-07 | 1953-10-06 | 0 | Details |
| US2651027A | Well logging | Expired / Lapsed | 1949-10-01 | 1953-09-01 | 0 | Details |
| US2640037A | Fatty acid salts of nitrogencontaining polyethers | Expired / Lapsed | 1951-10-03 | 1953-05-26 | 2 | Details |
| US2636861A | Hydraulic fluid | Expired / Lapsed | 1950-06-09 | 1953-04-28 | 2 | Details |
| US2631015A | Continuous helical liner for vessels | Expired / Lapsed | 1952-04-08 | 1953-03-10 | 0 | Details |
| US2629649A | Vapor-phase corrosion inhibitor | Expired / Lapsed | 1949-10-31 | 1953-02-24 | 0 | Details |
| US2616020A | Automatic temperature control | Expired / Lapsed | 1950-03-07 | 1952-10-28 | 0 | Details |
| US2599817A | Carbo-polymerization homopolymers of unsaturated alcohol et… | Expired / Lapsed | 1948-01-12 | 1952-06-10 | 2 | Details |
| US2588882A | Temperature compensator for capacitors | Expired / Lapsed | 1948-04-27 | 1952-03-11 | 0 | Details |
| US2575558A | Glycidyl ether compositions and method of using same | Expired / Lapsed | 1948-07-26 | 1951-11-20 | 3 | Details |
| US2565529A | Conjugated aldehyde-secondary amine reaction products | Expired / Lapsed | 1946-10-18 | 1951-08-28 | 2 | Details |
| US2564422A | Corrosion preventive composition | Expired / Lapsed | 1947-04-28 | 1951-08-14 | 2 | Details |
| US2559245A | System for amplifying small direct currents | Expired / Lapsed | 1949-06-14 | 1951-07-03 | 0 | Details |
| US2553718A | Glycidyl ether compositions | Expired / Lapsed | 1949-07-05 | 1951-05-22 | 2 | Details |
| US2550093A | Oil well control system | Expired / Lapsed | 1949-03-15 | 1951-04-24 | 0 | Details |
| US2540589A | Magnetic testing recording system for metallic bodies | Expired / Lapsed | 1950-07-03 | 1951-02-06 | 0 | Details |
| US2528417A | Epoxy ether compositions containing phenolic pitch | Expired / Lapsed | 1949-01-25 | 1950-10-31 | 2 | Details |
| US2522155A | Lubricating compositions | Expired / Lapsed | 1946-10-18 | 1950-09-12 | 2 | Details |
| US2520733A | Polymers of trimethylene glycol | Expired / Lapsed | 1946-08-26 | 1950-08-29 | 2 | Details |
| US2509621A | Dynamic pressure measurement | Expired / Lapsed | 1948-10-26 | 1950-05-30 | 0 | Details |
| US2509620A | Nonflammable hydraulic fluid | Expired / Lapsed | 1947-05-13 | 1950-05-30 | 2 | Details |
| US2500600A | Compositions of matter containing epoxy ethers and diamines | Expired / Lapsed | 1948-02-28 | 1950-03-14 | 2 | Details |
| US2496222A | Continuous process for emulsion polymerization of unsaturat… | Expired / Lapsed | 1947-06-17 | 1950-01-31 | 2 | Details |
| US2491445A | Flowmeter | Expired / Lapsed | 1947-02-24 | 1949-12-13 | 0 | Details |
| US2481278A | Polyoxyalkylene compounds | Expired / Lapsed | 1946-08-31 | 1949-09-06 | 0 | Details |
| US2479821A | Process and apparatus for refrigeration | Expired / Lapsed | 1946-03-30 | 1949-08-23 | 0 | Details |
| US2478675A | Removal of alkali from alumina | Expired / Lapsed | 1948-02-10 | 1949-08-09 | 0 | Details |
| US2476810A | Method and apparatus for radiological measurements | Expired / Lapsed | 1945-04-10 | 1949-07-19 | 0 | Details |
| US2472503A | Lubricating oil compositions | Expired / Lapsed | 1946-11-09 | 1949-06-07 | 0 | Details |
| US2461339A | Unsaturated thioethers of cyclic sulfones | Expired / Lapsed | 1946-01-07 | 1949-02-08 | 0 | Details |
| US2460303A | Gasoline manufacture | Expired / Lapsed | 1942-01-29 | 1949-02-01 | 0 | Details |
| US2454724A | Molybdena catalysts, their preparation and use | Expired / Lapsed | 1943-02-15 | 1948-11-23 | 0 | Details |
| US2452920A | Method and apparatus for drilling and producing wells | Expired / Lapsed | 1945-07-02 | 1948-11-02 | 0 | Details |
| US2435379A | Preparation of spheroidal catalyst | Expired / Lapsed | 1943-12-14 | 1948-02-03 | 0 | Details |
| US2435071A | Amides of cyclic sulfones | Expired / Lapsed | 1943-07-19 | 1948-01-27 | 0 | Details |
| US2430015A | Utilization of powdered catalysts | Expired / Lapsed | 1945-08-21 | 1947-11-04 | 0 | Details |
| US2427640A | Polymerizable esters and polymers thereof | Expired / Lapsed | 1944-02-01 | 1947-09-16 | 0 | Details |
| US2425193A | Well control system | Expired / Lapsed | 1944-12-26 | 1947-08-05 | 0 | Details |
| US2422372A | Preparation of an alumina supported molybdenum oxide cataly… | Expired / Lapsed | 1942-07-27 | 1947-06-17 | 0 | Details |
| US2413312A | Catalytic finishing of gasolines | Expired / Lapsed | 1945-01-26 | 1946-12-31 | 0 | Details |
| US2406671A | Cutting oil | Expired / Lapsed | 1944-09-25 | 1946-08-27 | 0 | Details |
| US2400333A | Polyvinyl acetal composition | Expired / Lapsed | 1943-04-09 | 1946-05-14 | 0 | Details |
| US2380520A | Borehole indicating apparatus | Expired / Lapsed | 1944-03-25 | 1945-07-31 | 0 | Details |
| US2379138A | Annular flow measuring device | Expired / Lapsed | 1943-01-11 | 1945-06-26 | 0 | Details |
| US2375007A | Antifoaming composition | Expired / Lapsed | 1943-04-15 | 1945-05-01 | 0 | Details |
| US2353484A | Seismic exploration method | Expired / Lapsed | 1942-01-05 | 1944-07-11 | 0 | Details |
| US2352825A | Seismograph amplification gain control | Expired / Lapsed | 1942-08-18 | 1944-07-04 | 0 | Details |
| US2352833A | Choke valve borehole indicating system | Expired / Lapsed | 1942-04-24 | 1944-07-04 | 0 | Details |
| US2351384A | Lithium soap grease | Expired / Lapsed | 1942-11-18 | 1944-06-13 | 0 | Details |
| US2351322A | Bottom hole regulator | Expired / Lapsed | 1942-01-13 | 1944-06-13 | 0 | Details |
| US2346060A | Method and apparatus for setting well casing | Expired / Lapsed | 1941-03-18 | 1944-04-04 | 0 | Details |
| US2326736A | Polymerizing unsaturated resinophoric compounds by action o… | Expired / Lapsed | 1940-09-21 | 1943-08-17 | 0 | Details |
| US2326442A | Gas-lift control | Expired / Lapsed | 1941-08-05 | 1943-08-10 | 0 | Details |
| US2319514A | Apparatus for controlling fluid flow through drill strings | Expired / Lapsed | 1941-09-08 | 1943-05-18 | 0 | Details |
| US2310575A | Ignition system for internal combustion engines | Expired / Lapsed | 1940-05-17 | 1943-02-09 | 0 | Details |
| US2297666A | Internal corrosion prevention in conduits | Expired / Lapsed | 1940-03-09 | 1942-09-29 | 0 | Details |
| US2288982A | Production of extrusion products from diene hydrocarbons | Expired / Lapsed | 1939-04-03 | 1942-07-07 | 0 | Details |
| US2282712A | Recovery of hydrogen halides | Expired / Lapsed | 1940-04-30 | 1942-05-12 | 0 | Details |
| US2278965A | Metal derivatives of amino methylene aldehydes | Expired / Lapsed | 1939-09-05 | 1942-04-07 | 0 | Details |
| US2278064A | Sulphonates | Expired / Lapsed | 1940-08-04 | 1942-03-31 | 0 | Details |
| US2277512A | Catalyst | Expired / Lapsed | 1939-08-28 | 1942-03-24 | 0 | Details |
| US2265870A | Isomerization of hydrocarbons | Expired / Lapsed | 1939-07-31 | 1941-12-09 | 0 | Details |
| US2262490A | Casing head structure | Expired / Lapsed | 1940-11-12 | 1941-11-11 | 0 | Details |
| US2262364A | Cable feeding mechanism | Expired / Lapsed | 1940-02-15 | 1941-11-11 | 0 | Details |
| US2220509A | Process and apparatus for exploring georlogical strata | Expired / Lapsed | 1940-01-30 | 1940-11-05 | 0 | Details |
| US2220558A | Detonation suppression system for internal combustion engin… | Expired / Lapsed | 1939-05-09 | 1940-11-05 | 0 | Details |
| US2217879A | Method and apparatus for drilling into water covered ground | Expired / Lapsed | 1940-01-16 | 1940-10-15 | 0 | Details |
| US2217876A | Valve for controlling and interrupting the flow of fluids | Expired / Lapsed | 1939-03-24 | 1940-10-15 | 0 | Details |
| US2203217A | Process for recovering alkyl phenols from petroleum oils | Expired / Lapsed | 1937-05-25 | 1940-06-04 | 0 | Details |
| US2172822A | Isobutenyl amines and process of making them | Expired / Lapsed | 1937-02-01 | 1939-09-12 | 0 | Details |
| US2169685A | Electrical method of geophysical exploration | Expired / Lapsed | 1937-06-08 | 1939-08-15 | 0 | Details |
| US2152162A | Purification of aqueous solutions of aliphatic esters of po… | Expired / Lapsed | 1936-12-12 | 1939-03-28 | 0 | Details |
| US2142980A | High molecular weight polar compounds and process of making… | Expired / Lapsed | 1937-02-27 | 1939-01-03 | 0 | Details |
| US2139392A | Extraction process | Expired / Lapsed | 1935-05-27 | 1938-12-06 | 0 | Details |
| US2128574A | Process for lubricant composition | Expired / Lapsed | 1936-10-19 | 1938-08-30 | 0 | Details |
| US2122826A | Treatment of unsaturated compounds | Expired / Lapsed | 1936-01-28 | 1938-07-05 | 0 | Details |
| US2118454A | Process for separating high molecular mixtures of the ester… | Expired / Lapsed | 1936-03-24 | 1938-05-24 | 0 | Details |
| US2092295A | Production of synthetic resins and resinous materials | Expired / Lapsed | 1935-12-18 | 1937-09-07 | 0 | Details |
| US2051806A | Production of mercaptans | Expired / Lapsed | 1935-03-18 | 1936-08-25 | 0 | Details |
| US2030244A | Caliper | Expired / Lapsed | 1929-09-28 | 1936-02-11 | 0 | Details |
| US2007159A | Segregation of tertiary base olefines | Expired / Lapsed | 1931-06-01 | 1935-07-09 | 0 | Details |