Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4229213 | Hydrometallurgical recovery of nickel values | — | 1980-10-21 |
| 4200455 | Hydrometallurgical recovery of metal values | James A. Bradbury, John C. Stauter, Richard T. Um, Frank A. Stephens | 1980-04-29 |