Issued Patents All Time
Showing 26–26 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5250112 | Spinel black pigments based on copper-chromium-manganese mixed oxides, a process for their preparation and their use | Peter Kuske, Manfred Mansmann, Dieter Messer, Dieter Rade | 1993-10-05 |