Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11414956 | Injection valve and method | John Burris, Ronald J. Garr | 2022-08-16 |
| 9151139 | Method of reducing deflection through a rod piston in a subsurface safety valve | John Burris, Grant Thompson, David Z. Anderson, Brock Alan Peoples, Doug A. Lowry +1 more | 2015-10-06 |
| 9133687 | Tubing pressure insensitive pressure compensated actuator for a downhole tool and method | Ronald J. Garr, Robert McDaniel, Don A. Hopmann, David E. Schneider | 2015-09-15 |
| 8820402 | Downhole shock absorber with guided crushable nose | Troy L. Smith, II, Anthony S. Coghill, Thomas S. Myerley, Douglas A. G. Lowery | 2014-09-02 |
| 8471551 | Magnetic position monitoring system and method | Gary B. Lake, Brock Alan Peoples, John Burris, David Z. Anderson, Tyler C. Roberts +3 more | 2013-06-25 |
| 8225871 | Bidirectional sealing mechanically shifted ball valve for downhole use | Clifford H. Beall, Richard A. Patterson | 2012-07-24 |
| 8113286 | Downhole barrier valve | Clifford H. Beall, Michael J. May, Andrew S. Haynes, Thad D. Andrews | 2012-02-14 |
| 7905292 | Pressure equalization device for downhole tools | Clifford H. Beall, Darren E. Bane, Michael J. May | 2011-03-15 |
| 6866101 | Control system with failsafe feature in the event of tubing rupture | — | 2005-03-15 |
| 6684958 | Flapper lock open apparatus | Ronald D. Williams, Grant Thompson, Brian Shaw, John L. McCoy, Jr., Barry L. Brown | 2004-02-03 |