Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5501277 | Combating lost circulation during the drilling of wells | David D. Onan | 1996-03-26 |
| 5447198 | Low temperature well cementing compositions and methods | Robert A. Kunzi, Edward F. Vinson, Patty L. Totten | 1995-09-05 |
| 5398758 | Utilizing drilling fluid in well cementing operations | David D. Onan, Dralen T. Terry | 1995-03-21 |
| 5383521 | Fly ash cementing compositions and methods | David D. Onan, Dralen T. Terry | 1995-01-24 |
| 5355954 | Utilizing drilling fluid in well cementing operations | David D. Onan, Dralen T. Terry | 1994-10-18 |
| 5346550 | Low temperature well cementing compositions and methods | Robert A. Kunzi, Edward F. Vinson, Patty L. Totten | 1994-09-13 |
| 5340860 | Low fluid loss cement compositions, fluid loss reducing additives and methods | Jiten Chatterji | 1994-08-23 |
| 5327968 | Utilizing drilling fluid in well cementing operations | David D. Onan, Dralen T. Terry, Patty L. Totten, Bobby J. King | 1994-07-12 |
| 5281270 | Retarded acid soluble well cement compositions and methods | Patty L. Totten, Edward F. Vinson | 1994-01-25 |
| 5220960 | Retarded acid soluble well cement compositions and methods | Patty L. Totten, Edward F. Vinson | 1993-06-22 |
| 4522653 | Salt cement dispersant and method of using same in cementing subterranean wellbore | S. Prabhakara Rao, Lance E. Brothers | 1985-06-11 |
| 4466837 | Liquid water loss reducing additives for cement slurries | Jiten Chatterji, John M. Tinsley | 1984-08-21 |
| 4455169 | Salt water cement slurries and water loss reducing additives therefor | Jiten Chatterji | 1984-06-19 |
| 4433731 | Liquid water loss reducing additives for cement slurries | Jiten Chatterji, John M. Tinsley | 1984-02-28 |