Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4496729 | Catalysts for the production of 2-cyanopyrazine | Heinz Friedrich, Axel Kleemann, Gunther Prescher, Helmut Beschke | 1985-01-29 |
| 4356324 | Optically active 1,2-bis-(diphenylphosphine)-compounds | Axel Kleemann, Jurgen Martens | 1982-10-26 |