Issued Patents All Time
Showing 51–56 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7971661 | Motor bit system | Ashley Bernard Johnson, John Cook | 2011-07-05 |
| 7913773 | Bidirectional drill string telemetry for measuring and drilling control | Qiming Li, Brian Clark, Shyam B. Mehta, Remi Hutin, Christopher Paul Reed +5 more | 2011-03-29 |
| 7849939 | Drill bit | Richard John Harmer | 2010-12-14 |
| 7845430 | Compliantly coupled cutting system | Ashley Bernard Johnson, John Cook | 2010-12-07 |
| 4993274 | Gyroscope system | — | 1991-02-19 |
| 4257280 | Gyroscopes | Peter H. Coles | 1981-03-24 |