Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7381806 | Cationic azo azine dyes and colorants that contain these compounds | Hans-Jurgen Braun | 2008-06-03 |
| 6491749 | Core-extended perylene bisimides | Heinz Langhals, Susanne Kirner, Patrick Blanke | 2002-12-10 |
| 5981773 | Preparation of perylene-3,4-dicarboxylic anhydrides | Heinz Langhals, Petra Christa Von Unold | 1999-11-09 |