Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4670416 | Nickel-based catalyst, its preparation and its application | Helmut Klimmek | 1987-06-02 |
| 4666635 | Nickel-based catalyst, its preparation and its application | Helmut Klimmek | 1987-05-19 |