Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6646126 | Process for preparing perylene-3,4,9,10-tetracarboxylic diimide in transparent pigment form | Joachim Weber, Gerhard Wilker, Martin Bohmer, Erwin Dietz | 2003-11-11 |
| 6521756 | Process for preparing perylene-3,4,9,10-tetracarboxylic diimide in transparent pigment form | Joachim Weber, Gerhard Wilker, Martin Bohmer, Erwin Dietz | 2003-02-18 |