Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5367069 | Metal-free, substituted phthalocyanines in the .chi.-modification | Gunther Beck | 1994-11-22 |
| 5326872 | Process for preparation of asymmetric isoindoline pigments | Barbara Wagner | 1994-07-05 |