Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5496403 | Process for preparing inorganic pigments of particular particle size | Guenter Etzrodt, Egon Liedek | 1996-03-05 |
| 4643772 | Preparation of a mixed-phase pigment based on iron oxide and chromium oxide | Ruediger Braun, Roland Bauer | 1987-02-17 |