The British Petroleum Company p.l.c.
349Patents
0Active
349Granted
42Portfolio score
Filing activity: May 1, 1980 → Jun 25, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5149680A | Platinum group metal alloy catalysts for hydrogenation of carboxylic acids and their anhydrides to alcohols and/or esters | Chemistry; Metallurgy | 247 | Expired |
| US4985572A | Catalyzed hydrogenation of carboxylic acids and their anhydrides to alcohols and/or esters | Chemistry; Metallurgy | 184 | Expired |
| US4923288A | Optical modulators based on polymers | Physics | 117 | Expired |
| US4684972A | Non-volatile amorphous semiconductor memory device utilizing a forming voltage | Electricity | 93 | Expired |
| US5085277A | Sub-sea well injection system | Fixed Constructions | 77 | Expired |
| US5025865A | Subsea oil production system | Fixed Constructions | 66 | Expired |
| US5336826A | Oxidation of methane over heterogeneous catalysts | Emerging Cross-Sectional Technologies | 66 | Expired |
| US4940826A | Process for the production of mono-olefins by the catalytic oxidative dehydrogenation of gaseous paraffinic hydrocarbons having two or more carbon atoms | Emerging Cross-Sectional Technologies | 65 | Expired |
| US4741278A | Solid fuel and a process for its combustion | Chemistry; Metallurgy | 61 | Expired |
| US4848475A | Sea bed process complex | Fixed Constructions | 57 | Expired |
| US4487843A | Catalytic activity of aluminosilicate zeolites | Performing Operations; Transporting | 55 | Expired |
| US5070944A | Down hole electrically operated safety valve | Fixed Constructions | 53 | Expired |
| US4962252A | Process for the production of alkenyl-substituted benzene derivatives | Emerging Cross-Sectional Technologies | 52 | Expired |
| US4795732A | Sulphided platinum group metal-silicalite dehydrogenation catalysts | Emerging Cross-Sectional Technologies | 50 | Expired |
| US4900433A | Vertical oil separator | Fixed Constructions | 49 | Expired |
| US4591615A | Thermoplastic elastomer composition | Chemistry; Metallurgy | 49 | Expired |
| US4888117A | Method for coalescence | Emerging Cross-Sectional Technologies | 48 | Expired |
| US4611085A | Vapour phase hydrogenation of esters | Chemistry; Metallurgy | 46 | Expired |
| US4642403A | Production of aromatics from ethane and/or ethylene | Chemistry; Metallurgy | 43 | Expired |
| US4993492A | Method of inserting wireline equipment into a subsea well | Fixed Constructions | 43 | Expired |
| US4596586A | Separator for oil and gas, and separation process | Fixed Constructions | 42 | Expired |
| US5000757A | Preparation and combustion of fuel oil emulsions | Performing Operations; Transporting | 42 | Expired |
| US4920811A | Fail-safe release actuator mechanism | Emerging Cross-Sectional Technologies | 41 | Expired |
| US4903774A | Annulus shut-off mechanism | Fixed Constructions | 41 | Expired |
| US4900456A | Well bore fluid | Emerging Cross-Sectional Technologies | 41 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.