Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8733475 | Drill bit with enhanced hydraulics and erosion-shield cutting teeth | Thang Vo, Tom Scott Roberts, Douglas Caraway | 2014-05-27 |
| 7168506 | On-bit, analog multiplexer for transmission of multi-channel drilling information | Marcel Boucher, Aaron Schen, Brett Herbert Stanes | 2007-01-30 |
| 6957575 | Apparatus for weight on bit measurements, and methods of using same | Marcel Boucher, Aaron Schen, Brian P. Jarvis | 2005-10-25 |
| 6802215 | Apparatus for weight on bit measurements, and methods of using same | Marcel Boucher, Aaron Schen, Brian P. Jarvis | 2004-10-12 |
| 5096005 | Hydraulic action for rotary drill bits | David E. Pearce | 1992-03-17 |
| 5029656 | Nozzle means for rotary drill bits | David E. Pearce | 1991-07-09 |
| 4989680 | Drill bit having improved hydraulic action for directing drilling fluid | John D. Deane | 1991-02-05 |
| 4940099 | Cutting elements for roller cutter drill bits | John D. Deane, Percy W. Schumacher | 1990-07-10 |