Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5196401 | Method of enhancing rock fragmentation and extending drill bit life | Pamela J. Watson, Sanaa E. Khalafalla, John E. Pahlman, Patrick A. Tuzinski | 1993-03-23 |
| 4959164 | Rock fragmentation method | Pamela J. Watson, Patrick A. Tuzinski, John E. Pahlman, Sanaa E. Khalafalla | 1990-09-25 |
| 4765415 | Isoelectric drilling method | Sanaa E. Khalafalla, John E. Pahlman | 1988-08-23 |