Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646299 | Two new crystal modifications of a diketopyrrolopyrrole pigment | Zhimin Hao, Abul Iqbal | 1997-07-08 |
| 5591865 | Crystal modification of a diketopyrrolopyrrole pigment | Zhimin Hao, Abul Iqbal | 1997-01-07 |