Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10087700 | Multi-cavity blowout preventer | — | 2018-10-02 |
| 9932795 | Lateral seal for blowout preventer shear blocks | Jess W. Shows, Bradford S. Franks | 2018-04-03 |
| 9879498 | Shear block design for blowout preventer | — | 2018-01-30 |
| 9732577 | Blowout preventer with hinged bonnet | Jess W. Shows, Bradford S. Franks | 2017-08-15 |
| D782542 | Hinged bonnet for a blowout preventer | Jess W. Shows, Bradford S. Franks | 2017-03-28 |
| 7699554 | Removable seal carrier for blowout preventer bonnet assembly | Edward Hemphill, Michael Wayne Berckenhoff | 2010-04-20 |
| 6845959 | Quick release blowout preventer bonnet | Michael Wayne Berckenhoff, Edward Hemphill | 2005-01-25 |