Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4495351 | Method for the production of 1-alkyl-6,7-methylene-dioxy-4(1H)-oxo-cinnolin-3-carboxylic acids | Hans-Jorg Schmidt, Joachim Franke, Heinz Tonjes, Gunter Kammann, Gunther Dietz | 1985-01-22 |