Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9022126 | Wellsite equipment replacement system and method for using same | Jeffrey Thomas Melancon, James Allen Douty | 2015-05-05 |
| 8875798 | Wellsite replacement system and method for using same | — | 2014-11-04 |
| 8770274 | Shear seal blowout preventer | — | 2014-07-08 |
| 8567490 | Shear seal blowout preventer | — | 2013-10-29 |
| 7523644 | Method and apparatus for verifying the integrity of a joint seal | — | 2009-04-28 |
| 7181808 | Buckle or clasp | — | 2007-02-27 |
| 6742597 | Safety check valve for coiled tubing | Andrew B. Campbell | 2004-06-01 |
| 6164619 | Bi-directional sealing ram | David J. McWhorter | 2000-12-26 |
| 6113061 | Method and apparatus for replacing a packer element | — | 2000-09-05 |
| 6012528 | Method and apparatus for replacing a packer element | — | 2000-01-11 |
| 6006647 | Actuator with free-floating piston for a blowout preventer and the like | — | 1999-12-28 |
| 5961094 | Method and apparatus for replacing a packer element | — | 1999-10-05 |
| 4943031 | Blowout preventer | — | 1990-07-24 |
| 4690411 | Bonded mechanically inner connected seal arrangement for a blowout preventer | — | 1987-09-01 |
| 4690033 | Self actuating locking and unlocking arrangement and method for reciprocating piston type actuators | — | 1987-09-01 |
| 4646825 | Blowout preventer, shear ram, shear blade and seal therefor | — | 1987-03-03 |
| 4416441 | Blowout preventer | — | 1983-11-22 |
| 4392633 | Valve structure having movable seat means | — | 1983-07-12 |
| 4220206 | Quick opening closure arrangement for well completions | — | 1980-09-02 |