Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6506755 | Thiazolidinecarboxyl acids | Walter-Gunar Friebe, Hans-Willi Krell, Hans-Peter Wolff | 2003-01-14 |
| 6307051 | 2-alkylidene hydroxycoumaranone derivatives | Walter-Gunar Friebe, Bernhard Koenig, Hans-Willi Krell | 2001-10-23 |