Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8902712 | Method for enhancing low frequency output of impulsive type seismic energy sources and its application to a seismic energy source for use while drilling | Robert H. Stokes, David A. Glowka | 2014-12-02 |
| 8619503 | Sparker type wellbore seismic energy source having controllable depth independent frequency | Robert H. Stokes, David A. Glowka | 2013-12-31 |
| 7487849 | Thermally stable diamond brazing | — | 2009-02-10 |
| 7488537 | Ceramic impregnated superabrasives | Andrew Sherman | 2009-02-10 |
| 6054693 | Microwave technique for brazing materials | Martin B. Barmatz, Henry W. Jackson | 2000-04-25 |
| 4499795 | Method of drill bit manufacture | — | 1985-02-19 |
| 4499958 | Drag blade bit with diamond cutting elements | Wilford V. Morris | 1985-02-19 |
| 4494618 | Drill bit with self cleaning nozzle | — | 1985-01-22 |
| 4478297 | Drill bit having cutting elements with heat removal cores | — | 1984-10-23 |
| 4442909 | Drill bit | — | 1984-04-17 |
| 4396077 | Drill bit with carbide coated cutting face | — | 1983-08-02 |
| 4381825 | Drill bit nozzle | — | 1983-05-03 |
| 4350215 | Drill bit and method of manufacture | — | 1982-09-21 |