Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5196401 | Method of enhancing rock fragmentation and extending drill bit life | William H. Engelmann, Pamela J. Watson, John E. Pahlman, Patrick A. Tuzinski | 1993-03-23 |
| 4959164 | Rock fragmentation method | William H. Engelmann, Pamela J. Watson, Patrick A. Tuzinski, John E. Pahlman | 1990-09-25 |
| 4910010 | Method for accelerating recovery of selenium from aqueous streams | — | 1990-03-20 |
| 4765415 | Isoelectric drilling method | William H. Engelmann, John E. Pahlman | 1988-08-23 |
| 4435302 | Concentrating and reclaiming magnetic fluids | George W. Reimers | 1984-03-06 |
| 4385998 | Removal of suspended solids from water | Joseph E. Schiller | 1983-05-31 |
| 4306905 | Production of ferrochromium alloys | John E. Pahlman | 1981-12-22 |
| 4295971 | Method for clarifying slimes | George W. Reimers | 1981-10-20 |
| 4208294 | Dilution stable water based magnetic fluids | George W. Reimers, Stephen A. Rholl | 1980-06-17 |
| 4208379 | Recovery of metals from Atlantic sea nodules | John E. Pahlman | 1980-06-17 |
| 4181607 | Removal of asbestos fibers from water | Joseph E. Schiller | 1980-01-01 |