Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5851960 | Method of performing well drilling operations with a foamable drilling fluid | Patty L. Totten, James E. Griffith | 1998-12-22 |
| 5716910 | Foamable drilling fluid and methods of use in well drilling operations | Patty L. Totten, James E. Griffith | 1998-02-10 |
| 5571318 | Well cementing methods and compositions for use in cold environments | James E. Griffith, Patty L. Totten, Jiten Chatterji | 1996-11-05 |