Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10465506 | Mud-pulse telemetry system including a pulser for transmitting information along a drill string | — | 2019-11-05 |
| 9976360 | System and method for damping vibration in a drill string using a magnetorheological damper | Mark Ellsworth Wassell, Daniel E. Burgess, Fred Lamar Thompson | 2018-05-22 |
| 8087476 | System and method for damping vibration in a drill string using a magnetorheological damper | Mark Ellsworth Wassell, Daniel E. Burgess | 2012-01-03 |
| 7762356 | Rotary steerable motor system for underground drilling | William Evans Turner, Carl Allison Perry, Mark Ellsworth Wassell, Daniel E. Burgess, Martin E. Cobern | 2010-07-27 |
| 7389830 | Rotary steerable motor system for underground drilling | William Evans Turner, Carl Allison Perry, Mark Ellsworth Wassell, Daniel E. Burgess, Martin E. Cobern | 2008-06-24 |