Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7441609 | Method of decreasing the disintegration of shale-containing cuttings and drilling fluid therefor | — | 2008-10-28 |
| 7137459 | Silicate drilling fluid and method of drilling a well therewith | — | 2006-11-21 |
| 5345819 | Method and apparatus for wellbore stability analysis | — | 1994-09-13 |
| 4508628 | Fast drilling invert emulsion drilling fluids | Thad O. Walker, Jay P. Simpson | 1985-04-02 |
| 4257168 | Method of and apparatus for drying particulate material | John J. Carroll, Keith Swain, Warren Naughton | 1981-03-24 |