Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855342 | Coating material and its use as primer and extender | Heinz Dietholf Becker, Ralf Dahm, Hermann Kerber, Fritz Sadowski, Werner Stephan | 1989-08-08 |
| 4839414 | Pigment dispersion and its use | Thomas Brock, Hermann Kerber, Paul Rupieper | 1989-06-13 |