Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8857454 | Valving system and method of selectively halting injection of chemicals | Darrin L. Willauer, Jesse J. Constantine | 2014-10-14 |
| 8505294 | Method and system for control of hydraulic systems | Darrin L. Willauer, Conrad G. Weinig | 2013-08-13 |
| 8002042 | Actuatable subsurface safety valve and method | — | 2011-08-23 |
| 7644755 | Annular electrical wet connect | Carl W. Stoesz, Luis E. Mendez, Don A. Hopman | 2010-01-12 |
| 7607477 | Optical wet connect | Carl W. Stoesz, Steve Rosenblatt | 2009-10-27 |
| 6736213 | Method and system for controlling a downhole flow control device using derived feedback control | Terry R. Bussear, David M. Schneider, Mike Norris | 2004-05-18 |
| 6070668 | Blowout preventer spanner joint with emergency disconnect capability | Williams C. Parks, Michael W. Spiering, Reginald L. Currier | 2000-06-06 |
| 5526882 | Subsea drilling and production template system | William C. Parks | 1996-06-18 |
| 5170815 | Coiled tubing gas lift assembly | Ronald E. Pringle | 1992-12-15 |
| 4844166 | Method and apparatus for recompleting wells with coil tubing | Ronald E. Pringle, Arthur J. Morris | 1989-07-04 |
| 4649993 | Combination electrically operated solenoid safety valve and measuring sensor | — | 1987-03-17 |
| 4579177 | Subsurface solenoid latched safety valve | — | 1986-04-01 |
| 4566534 | Solenoid actuated well safety valve | — | 1986-01-28 |
| 4241799 | Protected cutter mounting for drill bits | — | 1980-12-30 |