Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693824 | Preparation of mixed crystals and solid solutions of 1, 4-diketo-pyrrolpyrroles | Jin Mizuguchi, Olof Wallquist, Abul Iqbal | 1997-12-02 |
| 5650520 | Crystal modification of a diketopyrrolopyrrole pigment | Ingo Schloder, Abul Iqbal | 1997-07-22 |
| 5646299 | Two new crystal modifications of a diketopyrrolopyrrole pigment | Abul Iqbal, Fritz Herren | 1997-07-08 |
| 5616725 | Pyrrolo[3,4-C]pyrrole synthesis | John S. Zambounis, Abul Iqbal | 1997-04-01 |
| 5591865 | Crystal modification of a diketopyrrolopyrrole pigment | Abul Iqbal, Fritz Herren | 1997-01-07 |