Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6153669 | Drilling compositions and methods | David Diggs, Marie Kearney, M. J. Timm, E. C. Lupton, Lev E. Bromberg +2 more | 2000-11-28 |
| 6110876 | Drilling compositions and methods | David Diggs, Marie Kearney, M. J. Timm, E. C. Lupton, Lev E. Bromberg +2 more | 2000-08-29 |
| 5888943 | Drilling compositions and methods | David Diggs, Marie Kearney, M. J. Timm, E. C. Lupton, Lev E. Bromberg +2 more | 1999-03-30 |