Entreprise de Recherches et d'Activities Petrolieres (E.R.A.P.)
14Patents
0Active
14Granted
32Portfolio score
Filing activity: Feb 19, 1974 → Mar 15, 1978
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4092255A | Novel lubricating compositions containing nitrogen containing hydrocarbon backbone polymeric additives | Chemistry; Metallurgy | 39 | Expired |
| US3954138A | Safety plug for sealing-off the tubing of a producing oil or gas well | Emerging Cross-Sectional Technologies | 34 | Expired |
| US3953827A | Method of determining the angular position of a towed marine seismic cable and apparatus for carrying out said method | Physics | 32 | Expired |
| US4068490A | Method and apparatus for assembling and laying underwater pipeline | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US3943363A | Device for automatic analysis mass spectrometry | Physics | 21 | Expired |
| US4053022A | Device for guiding a drilling string during underwater drilling | Fixed Constructions | 15 | Expired |
| US3960764A | Catalytic composition for the conversion of hydrocarbons | Chemistry; Metallurgy | 13 | Expired |
| US3954608A | Method and device for rapid chromatographic separation | Physics | 12 | Expired |
| US4170561A | Lubricating compositions with lactam or thiolactam-containing copolymers | Chemistry; Metallurgy | 9 | Expired |
| US4062402A | Method and apparatus for connecting a riser pipe to blow out preventer stack at the head of an oil well | Fixed Constructions | 3 | Expired |
| US4045035A | Inflatable lip seal for pipes | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US4080398A | Process for preparing catalysts for use in olefins conversion reactions | Chemistry; Metallurgy | 2 | Expired |
| US4068491A | Method and apparatus for connecting the ends of submerged pipes | Performing Operations; Transporting | 2 | Expired |
| US3944824A | Method and device for sampling gases | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.