Shell USA Inc
Shell USAActive Patents
0
Total Holdings
8
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4034808A | Method for pump-off detection | Expired / Lapsed | 1976-09-20 | 1977-07-12 | 9 | Details |
| US4008603A | Ultrasonic method and apparatus for measuring wall thicknes… | Expired / Lapsed | 1975-12-29 | 1977-02-22 | 7 | Details |
| US3951209A | Method for determining the pump-off of a well | Expired / Lapsed | 1975-06-09 | 1976-04-20 | 5 | Details |
| US3343409A | Method of determining sucker rod pump performance | Expired / Lapsed | 1966-10-21 | 1967-09-26 | 2 | Details |
| US3199595A | Secondary control system for underwater wells | Expired / Lapsed | 1961-12-28 | 1965-08-10 | 2 | Details |
| US3163222A | Wellhead apparatus | Expired / Lapsed | 1961-04-24 | 1964-12-29 | 1 | Details |
| US3116170A | Gaseous fuel cells | Expired / Lapsed | 1960-06-06 | 1963-12-31 | 2 | Details |
| US3101118A | Y-branched wellhead assembly | Expired / Lapsed | 1959-08-17 | 1963-08-20 | 2 | Details |