Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8800689 | Floating plug pressure equalization in oilfield drill bits | — | 2014-08-12 |
| 8579046 | Pressure compensator for drill bit | Pele Jason Nunley | 2013-11-12 |
| 7543660 | Roller cone drill bit with debris diverter plugs | Mark E. Williams, William C. Saxman, Mark P. Blackman, Gerald L. Pruitt | 2009-06-09 |
| 7484572 | Roller cone drill bit with debris flow paths through associated support arms | Mark P. Blackman, Mark E. Williams, William C. Saxman, Gerald L. Pruitt, William W. King +1 more | 2009-02-03 |
| 5709278 | Rotary cone drill bit with contoured inserts and compacts | — | 1998-01-20 |