Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5250272 | Process for leaching precious metals with hydrogen-peroxide and a cyanide leaching solution | Helmut Knorre, Juergen Loroesch, Mathias Stoll, Annette Ziegler | 1993-10-05 |