Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5332746 | 8,9-annelated-.beta.-carbolines and 8,9-annelated 3,4-dihydro-.beta.-carbolines | Derk Hamminga, Hans H. Haeck, Ineke van Wijngaarden | 1994-07-26 |
| 5328905 | 8,9-anellated-1,2,3,4-tetrahydro-.beta.-carboline derivatives | Derk Hamminga, Ineke van Wijngaarden | 1994-07-12 |