Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877220 | Hexasubstituted cyclohexane compounds | Klaus Praefcke, Bernd Kohne | 1989-10-31 |
| 4855342 | Coating material and its use as primer and extender | Heinz Dietholf Becker, Klaus Bederke, Ralf Dahm, Hermann Kerber, Fritz Sadowski | 1989-08-08 |