Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10767437 | Blowout preventer bonnet retention methods and systems | Steven F. Shimonek | 2020-09-08 |
| 9803447 | Asymmetrical button for ram-type blowout preventers | Johnny E. Jurena, David J. McWhorter, Steven F. Shimonek | 2017-10-31 |
| 9759032 | Blowout preventer end connection | Steven F. Shimonek | 2017-09-12 |
| 9068427 | Asymmetrical button for ram-type blowout preventers | Johnny E. Jurena, David J. McWhorter, Steven F. Shimonek | 2015-06-30 |
| 8944403 | Blowout preventer with pressure-isolated operating piston assembly | Johnny E. Jurena, David J. McWhorter, Steven F. Shimonek | 2015-02-03 |
| 8857784 | Linear clutch for blowout preventer | Steven F. Shimonek | 2014-10-14 |
| 5335729 | Tubular connection, method for making same, and tool therefor | Edwin C. Turner | 1994-08-09 |
| 4580630 | Mudline casing hanger assembly | Lionel J. Milberger, Jimmy R. Martin, Jr., Thomas Patrick Mataway | 1986-04-08 |