Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5609874 | Method of treating viral infections | Petrus B. Kruger, Patrick J. D. Bouic, Carl F. De Vos Albrecht | 1997-03-11 |
| 4652636 | Pentene-diphenyl-diglucoside containing compound | Siegfrid Drewes | 1987-03-24 |
| 4644085 | Rooperol and its derivates | Siegfried Drewes | 1987-02-17 |