Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806558 | Diarylacetylenes and their use in treating acne | Fritz-Frieder Frickel, Axel Nuerrenbach | 1989-02-21 |
| 4804670 | Substituted hexatriene derivatives and their use in treating acne and psoriasis | Fritz-Frieder Frickel, Joachim Paust, Klaus Schmieder, Axel Nuerrenbach | 1989-02-14 |
| 4801733 | 1-substituted tetralin derivatives, their preparation and their use | Fritz-Frieder Frickel, Axel Nuerrenbach | 1989-01-31 |