Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4293333 | Microbiological recovery of metals | — | 1981-10-06 |
| 4293334 | Recovery of metals | Hubert A. Lechavelier | 1981-10-06 |
| 4289531 | Process for recovering precious metals | Hubert A. Lechavelier | 1981-09-15 |
| 4257807 | Precious metals recovery process | — | 1981-03-24 |