Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5626664 | Waste treatment process | Dirk Osing, G unter Treutlein, Manfred Erken | 1997-05-06 |
| 5618847 | Medicinal feed for the systemic treatment of ectoparasitic and ectobacterial diseases of fish | Hartmut Schmidt | 1997-04-08 |
| 5607505 | Waste treatment process | Dirk Osing, G unter Treutlein, Manfred Erken | 1997-03-04 |