Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10973306 | Firefighter backpack assembly | — | 2021-04-13 |
| 5711922 | Preferential hydrometallurgical conversion of zinc sulfide to sulfate from zinc sulfide containing ores and concentrates | Robert O'Brien | 1998-01-27 |
| 4647307 | Process for recovering gold and silver from refractory ores | Rein Raudsepp, Morris J. V. Beattie | 1987-03-03 |