Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9719326 | Switch between redundant control systems for a subsurface safety valve | Brett C. Jones, Samuel C. Kucera, Michael L. Hair | 2017-08-01 |
| 8225871 | Bidirectional sealing mechanically shifted ball valve for downhole use | James T. Sloan, Richard A. Patterson | 2012-07-24 |
| 8113286 | Downhole barrier valve | Michael J. May, James T. Sloan, Andrew S. Haynes, Thad D. Andrews | 2012-02-14 |
| 8024847 | Method of manufacturing a downhole lubricator valve | — | 2011-09-27 |
| 7905292 | Pressure equalization device for downhole tools | Darren E. Bane, Michael J. May, James T. Sloan | 2011-03-15 |
| 7810571 | Downhole lubricator valve | — | 2010-10-12 |
| 7735560 | Distortion compensation for rod piston bore in subsurface safety valves | Darren E. Bane, David Z. Anderson, Alan N. Wagner, Gary B. Lake | 2010-06-15 |
| 7699108 | Distortion compensation for rod piston bore in subsurface safety valves | Darren E. Bane, David Z. Anderson, Alan N. Wagner, Gary B. Lake | 2010-04-20 |
| 7694742 | Downhole hydraulic control system with failsafe features | Darren E. Bane, David Z. Anderson, Aaron T. Jackson, Edward Welch, Alan N. Wagner | 2010-04-13 |
| 7637324 | Isolation valve for subsurface safety valve line | David Z. Anderson, Alan N. Wagner, Anthony S. Coghill | 2009-12-29 |
| 7552774 | Control line hydrostatic minimally sensitive control system | David Z. Anderson, Edward Welch, Alan N. Wagner, Darren E. Bane | 2009-06-30 |
| 6427778 | Control system for deep set subsurface valves | Brian Shaw | 2002-08-06 |
| 6283477 | Annular chamber seal | Michael S. Rawson, Kurt A. Hickey | 2001-09-04 |
| 6260850 | Annular chamber seal | Michael S. Rawson, Kurt A. Hickey | 2001-07-17 |
| 6109351 | Failsafe control system for a subsurface safety valve | — | 2000-08-29 |
| 5918858 | Undulating transverse interface for curved flapper seal | Michael S. Rawson, Doug Trott, Mark S. Megill | 1999-07-06 |
| 5799949 | Annular chamber seal | Michael S. Rawson, Kurt A. Hickey | 1998-09-01 |
| 5682921 | Undulating transverse interface for curved flapper seal | Michael S. Rawson, Doug Trott, Mark S. Megill | 1997-11-04 |
| 5496044 | Annular chamber seal | Michael S. Rawson, Kurt A. Hickey | 1996-03-05 |
| 4423777 | Fluid pressure actuated well tool | Albert A. Mullins, II | 1984-01-03 |
| 4311196 | Tangentially loaded slip assembly | Albert A. Mullins, II | 1982-01-19 |
| 4290484 | Seal receptacle assembly | Amareswar Amancharla, Michael A. Luke | 1981-09-22 |