Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828809 | Separation of nickel from copper in autoclave | Thomas Thomassen, Hans Zachariansen | 1989-05-09 |
| 4671945 | Method for separation and leaching of the valuable metals in sulphide materials | Thomas Thomassen | 1987-06-09 |