Issued Patents All Time
Showing 76–90 of 90 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5730224 | Slidable access control device for subterranean lateral well drilling and completion | Dan Collins | 1998-03-24 |
| 5613559 | Decentralizing centralizing locating and orienting subsystems and methods for subterranean multilateral well drilling and completion | John C. Gano, David L. Reesing | 1997-03-25 |
| 5566763 | Decentralizing, centralizing, locating and orienting subsystems and methods for subterranean multilateral well drilling and completion | John C. Gano, David L. Reesing | 1996-10-22 |
| 5390735 | Full bore lock system | — | 1995-02-21 |
| 5348087 | Full bore lock system | — | 1994-09-20 |
| 5314026 | Landing nipple | — | 1994-05-24 |
| 5293943 | Safety valve, sealing ring and seal assembly | — | 1994-03-15 |
| 5259457 | Safety valve, sealing ring and seal assembly | — | 1993-11-09 |
| 5226483 | Safety valve landing nipple and method | — | 1993-07-13 |
| 5199494 | Safety valve, sealing ring and seal assembly | — | 1993-04-06 |
| 4766960 | Standing and injection valve | — | 1988-08-30 |
| 4691777 | Standing and injection valve | — | 1987-09-08 |
| 4502542 | Well system | Robert L. Thurman | 1985-03-05 |
| 4429747 | Well tool | — | 1984-02-07 |
| 4396061 | Locking mandrel for a well flow conductor | Jack W. Tamplen, Colby M. Ross, Timothy J. Noack | 1983-08-02 |