Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700763 | Thermally stable oil-based drilling fluid | — | 1997-12-23 |
| 5696058 | Solids-free, essentially all-oil wellbore fluid | — | 1997-12-09 |
| 5634984 | Method for cleaning an oil-coated substrate | — | 1997-06-03 |
| 5635457 | Non-toxic, inexpensive synthetic drilling fluid | — | 1997-06-03 |
| 5629270 | Thermally stable oil-base drilling fluid | — | 1997-05-13 |