Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6620931 | Process for preparing new crystal polymorphs of a methyl-substituted benzimidazolone-dioxazine pigment | Martin Schmidt, Roland Born | 2003-09-16 |
| 6617453 | Triphendioxazine compounds | Bansi Lal Kaul, Patrick Boeglin | 2003-09-09 |