Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672716 | Yellow diketopyrrolopyrrole pigments | Bernd Lamatsch, Olof Wallquist | 1997-09-30 |
| 5650520 | Crystal modification of a diketopyrrolopyrrole pigment | Zhimin Hao, Abul Iqbal | 1997-07-22 |