Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6569231 | Pigment preparations, a process for preparing pigment preparations and use thereof | Johann Mathias, Horst Kleinhenz, Alfons Karl | 2003-05-27 |
| 6503311 | Aqueous carbon black dispersions | Alfons Karl, Werner Kalbitz, Horst Kleinhenz | 2003-01-07 |