Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11686173 | Rotary control device with self-contained hydraulic reservoir | Lap Tran | 2023-06-27 |
| 11614175 | Self-contained hydraulically controlled relief valve | — | 2023-03-28 |
| 10895337 | Pipe union assembly | — | 2021-01-19 |
| 10830233 | Reduced torque lock assembly | — | 2020-11-10 |
| RE47771 | Blowout preventer with locking ram assembly and method of using same | — | 2019-12-17 |
| 10436193 | Cylinder liner retainer system with torque multiplier and method | — | 2019-10-08 |
| 10408328 | Epicyclic washpipe swivel cartridge and method | — | 2019-09-10 |
| 10041490 | Quick change cylindrical liner retainer assembly | — | 2018-08-07 |
| 10036384 | Quick release piston rod assembly | — | 2018-07-31 |
| 9909580 | Reduced torque valve cover lock assembly | — | 2018-03-06 |
| 9869148 | Wellsite connector with floating seal member and method of using same | Frank Benjamin Springett, Eric Trevor Ensley | 2018-01-16 |
| 9506304 | Apparatus and method for connecting tubulars of a wellsite | — | 2016-11-29 |
| 9506313 | Contoured ram bore on type U blowout preventer | — | 2016-11-29 |
| 9410383 | Method and apparatus for connecting tubulars of a wellsite | Eric Trevor Ensley | 2016-08-09 |
| 9175541 | Blowout preventer seal assembly and method of using same | — | 2015-11-03 |
| 9169710 | Wellsite connector with piston driven collets and method of using same | — | 2015-10-27 |
| 9169712 | Blowout preventer locking door assembly and method of using same | — | 2015-10-27 |
| 9169713 | Blowout preventer with locking ram assembly and method of using same | — | 2015-10-27 |
| 8443880 | Blowout preventer with shearing blades | — | 2013-05-21 |
| 8443879 | Blowout preventer with shearing blades | — | 2013-05-21 |
| 8167031 | Blowout preventer with shearing blades | — | 2012-05-01 |
| 8162046 | Blowout preventer with shearing blades | — | 2012-04-24 |
| D521537 | Diamond-shaped face on diamond-shaped face on blowout preventers, valves, chokes, or the like | Leonard D. Kemp | 2006-05-23 |