Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5650456 | Coumarin derivatives, a method of preparing them and their use as intermediates | Rolf Wehrmann, Burkhard Kohler | 1997-07-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5650456 | Coumarin derivatives, a method of preparing them and their use as intermediates | Rolf Wehrmann, Burkhard Kohler | 1997-07-22 |