Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7410536 | Oxidation-stable iron oxide pigments, process for preparing them and their use | Holger Friedrich | 2008-08-12 |
| 7235127 | Reduction- and oxidation-stable iron oxide black pigments having high colour strength for colouring plastics and building materials, their preparation and their use | Udo Krauter, Carsten Rosenhahn, Hans-Josef Moringen | 2007-06-26 |
| 5718755 | Preparation and use of iron oxide black pigment granules | Berndt-Ullrich Kohler, Manfred Eitel, Gunter Linde | 1998-02-17 |
| 5665157 | Clean color shade, yellow-tinged red iron oxide pigments, and a process for their manufacture, and their use | Wolfgang Oehlert, Wilfried Burow, Horst Brunn | 1997-09-09 |
| 5269843 | Boron-containing iron oxide pigments and a process for their preparation | Gunter Buxbaum, Horst Brunn | 1993-12-14 |