Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4359376 | Recovering copper from a copper-bearing source | Frank Baczek, Bruce C. Wojcik, Daniel Lewis, Jack C. Otto, Lawrence L. Tuttle | 1982-11-16 |
| 4290865 | Recovering copper from a copper-bearing source | Frank Baczek, Bruce C. Wojcik, Daniel Lewis, Jack C. Otto, Lawrence L. Tuttle | 1981-09-22 |
| 4256553 | Recovering copper from chalcopyrite concentrate | Frank Baczek, Bruce C. Wojcik, Daniel Lewis, Jack C. Otto, Lawrence L. Tuttle | 1981-03-17 |