Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5327968 | Utilizing drilling fluid in well cementing operations | David D. Onan, Dralen T. Terry, Patty L. Totten, Bobby G. Brake | 1994-07-12 |
| 5298069 | Acid removable low density well cement compositions and methods | Patty L. Totten | 1994-03-29 |
| 5295543 | Converting drilling fluids to cementitious compositions | Dralen T. Terry, David D. Onan, Patty L. Totten | 1994-03-22 |