Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8739897 | Pressure compensation and rotary seal system for measurement while drilling instrumentation | Raju M. Eason, Charles Borsos | 2014-06-03 |
| 7178608 | While drilling system and method | James C. Mayes, Mario Araya | 2007-02-20 |
| 7083008 | Apparatus and method for pressure-compensated telemetry and power generation in a borehole | Raju M. Eason | 2006-08-01 |
| 6116355 | Choke device | Graham Watson, Douglas Caraway | 2000-09-12 |
| 5673763 | Modulated bias unit for rotary drilling | — | 1997-10-07 |
| 5553678 | Modulated bias units for steerable rotary drilling systems | John D. Barr, Mark W. Burrell, Robert A. Russell, David Boast, John Martin Clegg | 1996-09-10 |
| 5553679 | Modulated bias unit for rotary drilling | — | 1996-09-10 |
| 5520255 | Modulated bias unit for rotary drilling | John D. Barr, Robert A. Russell | 1996-05-28 |