Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5641728 | Control of the fluid loss of well drilling and servicing fluids | James W. Dobson, Jr. | 1997-06-24 |
| 5616541 | Low solids, high density fluids for well drilling | James W. Dobson, Jr., Terry Robertson | 1997-04-01 |