Patent Explorer
Browse, filter, and analyze 104 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2909494A | Process for resinifying polyepoxides and resulting products | Shell Development Co | Expired / Lapsed | 1955-11-22 | 1959-10-20 | 1975-11-22 | 0.0 yrs | 2 | |
| US2906720A | Composition comprising aromatic petroleum residue and polyepoxide and process for treating surfaces therewith | Shell Development Co | Expired / Lapsed | 1957-04-24 | 1959-09-29 | 1977-04-24 | 0.0 yrs | 2 | |
| US2904535A | Curing polyalkyleneether polyurethanes with aromatic dhsocyanates | Shell Development Co | Expired / Lapsed | 1956-02-27 | 1959-09-15 | 1976-02-27 | 0.0 yrs | 2 | |
| US2854215A | Offshore oil well installation | Shell Development Co | Expired / Lapsed | 1956-03-05 | 1958-09-30 | 1976-03-05 | 0.0 yrs | 2 | |
| US2849992A | Stratified charge internal combustion engine | Shell Development Co | Expired / Lapsed | 1955-12-15 | 1958-09-02 | 1975-12-15 | 0.0 yrs | 0 | |
| US2841244A | Process of lubricating engines with vaporous lubricants | Shell Development Co | Expired / Lapsed | 1954-10-18 | 1958-07-01 | 1974-10-18 | 0.0 yrs | 2 | |
| US2838644A | Electronic thermoregulator | Shell Development Co | Expired / Lapsed | 1956-01-20 | 1958-06-10 | 1976-01-20 | 0.0 yrs | 0 | |
| US2817646A | Process for preparing lactams and amides | Shell Development Co | Expired / Lapsed | 1955-12-06 | 1957-12-24 | 1975-12-06 | 0.0 yrs | 2 | |
| US2813127A | Diperoxides | Shell Development Co | Expired / Lapsed | 1956-04-19 | 1957-11-12 | 1976-04-19 | 0.0 yrs | 1 | |
| US2801229A | Curing glycidyl polyethers | Shell Development Co | Expired / Lapsed | 1953-07-29 | 1957-07-30 | 1973-07-29 | 0.0 yrs | 2 | |
| US2783027A | Method and apparatus for submerged well drilling | Shell Development Co | Expired / Lapsed | 1954-04-20 | 1957-02-26 | 1974-04-20 | 0.0 yrs | 0 | |
| US2781970A | Analog computer | Shell Development Co | Expired / Lapsed | 1951-10-08 | 1957-02-19 | 1971-10-08 | 0.0 yrs | 0 | |
| US2776817A | Drilling apparatus | Shell Development Co | Expired / Lapsed | 1952-07-21 | 1957-01-08 | 1972-07-21 | 0.0 yrs | 0 | |
| US2764184A | Expandable tube plug | Shell Development Co | Expired / Lapsed | 1954-05-24 | 1956-09-25 | 1974-05-24 | 0.0 yrs | 0 | |
| US2752269A | Treatment of textile materials | Shell Development Co | Expired / Lapsed | 1951-12-01 | 1956-06-26 | 1971-12-01 | 0.0 yrs | 2 | |
| US2718982A | Flow control system | Shell Development Co | Expired / Lapsed | 1951-09-21 | 1955-09-27 | 1971-09-21 | 0.0 yrs | 2 | |
| US2707440A | Oil well pump control system | Shell Development Co | Expired / Lapsed | 1951-07-21 | 1955-05-03 | 1971-07-21 | 0.0 yrs | 0 | |
| US2682515A | Adhesive composition containing polyepoxide materials | Shell Development Co | Expired / Lapsed | 1952-07-05 | 1954-06-29 | 1972-07-05 | 0.0 yrs | 2 | |
| US2682514A | Compositions containing glycidyl polyether of a polyhydric phenol and an epoxidizedester | Shell Development Co | Expired / Lapsed | 1952-02-25 | 1954-06-29 | 1972-02-25 | 0.0 yrs | 2 | |
| US2681705A | Shutoff apparatus for dual production wells | Shell Development Co | Expired / Lapsed | 1951-06-05 | 1954-06-22 | 1971-06-05 | 0.0 yrs | 0 |
Showing 1 to 20 of 104 patents
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