Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6620931 | Process for preparing new crystal polymorphs of a methyl-substituted benzimidazolone-dioxazine pigment | Peter Kempter, Roland Born | 2003-09-16 |
| 6602342 | Crystal polymorphs of C.I. Pigment Yellow 191 and their preparation | Arpad Acs, Rudiger Jung, Franz Schui | 2003-08-05 |
| 6504045 | Crystal polymorphs of a yellow disazo colorant, and their preparation | Ruediger Jung, Hans Joachim Metz, Joachim Weber, Olaf Schupp, Andreas Wacker | 2003-01-07 |