Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4717419 | Method for treating iron-bearing slags containing precious metals, particularly slags created in the smelting process of copper and nickel | Juho K. Makinen, Heikki Saari | 1988-01-05 |