Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10000987 | Blowout preventer monitoring system and method of using same | Frank Benjamin Springett, Clayton Simmons | 2018-06-19 |
| 8720567 | Blowout preventers for shearing a wellbore tubular | Frank Benjamin Springett | 2014-05-13 |
| 8602102 | Blowout preventers and methods of use | Frank Benjamin Springett | 2013-12-10 |
| 8424607 | System and method for severing a tubular | Frank Benjamin Springett, Christopher Dale Johnson, Shern Eugene Peters, Eric Trevor Ensley | 2013-04-23 |
| 8066070 | Blowout preventers and methods of use | Frank Benjamin Springett | 2011-11-29 |
| 7814979 | Blowout preventers and methods of use | Frank Benjamin Springett | 2010-10-19 |
| 7748473 | Top drives with shaft multi-seal | Lawrence E. Wells, Preston R. Fox, Cliff Swiontek, Svein Stubstad, Howard Ervin +1 more | 2010-07-06 |
| 7487848 | Multi-seal for top drive shaft | Larry Wells, Svein Stubstad, Howard Ervin, Paul Conover | 2009-02-10 |
| 7367396 | Blowout preventers and methods of use | Frank Benjamin Springett | 2008-05-06 |
| 7350587 | Pipe guide | Frank Benjamin Springett, Eric Trevor Ensley, Dean Allen Bennett | 2008-04-01 |
| 7051990 | Blowout preventer and movable bonnet support | Frank Benjamin Springett, Eric Trevor Ensley | 2006-05-30 |
| 7044430 | Lock bars for blowout preventer | Frank Benjamin Springett, Dean Allen Bennett | 2006-05-16 |
| RE38249 | Rotating blowout preventer and method | Paul L. Tasson | 2003-09-16 |
| 6192680 | Subsea hydraulic control system | Hubert L. Elkins, Mark A. Merit | 2001-02-27 |
| 5975484 | Door connectors | Bryce A. Levett | 1999-11-02 |
| 5897094 | BOP with improved door connectors | Bryce A. Levett | 1999-04-27 |
| 5662171 | Rotating blowout preventer and method | Paul L. Tasson | 1997-09-02 |
| 5588491 | Rotating blowout preventer and method | Paul L. Tasson | 1996-12-31 |
| 5451129 | Pipe transfer system | George I. Boyadjieff, Preston R. Fox | 1995-09-19 |