Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4698100 | Iron oxide yellow pigments having a low silking effect and a process for production thereof | Wilfried Burow, Helmut Printzen, Horst Brunn | 1987-10-06 |
| 4620879 | Iron oxide yellow pigments having a low silking effect and a process for production thereof | Wilfried Burow, Helmut Printzen, Horst Brunn | 1986-11-04 |
| 4318843 | Inorganic pigments with improved gloss and good distribution in lacquer binders | Klaus Kohler, Peter Woditsch, Heribert Stutgens, Eckhard Bayer, Hans Sander | 1982-03-09 |
| 4318844 | Inorganic pigments with improved gloss and distribution in lacquer binders | Klaus Kohler, Peter Woditsch, Heribert Stutgens, Eckhard Bayer, Hans Sander | 1982-03-09 |