Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6626990 | Use of aromatic compounds as phase directors and particle size reducers for quinacridone pigments | Shivakumar Basalingappa Hendi, Suruliappa Gowder Jeganathan | 2003-09-30 |
| 5847143 | Process for preparing quinacridones | — | 1998-12-08 |
| 5529623 | Pigmentary solid solutions of pyrrolo[3,4-c]pyrroles and quinacridones | Shivakumar Basalingappa Hendi, Edward E. Jaffe | 1996-06-25 |
| 5502192 | Process for the preparation of quinacridones from dihydroquinacridones in an aqueous medium | — | 1996-03-26 |
| 5281269 | Aqueous process for preparation of modified beta quinacridone | Shivakumar Basalingappa Hendi, Walter Zukowski | 1994-01-25 |
| 5145524 | Surface modified pigment compositions | — | 1992-09-08 |
| 4469523 | Borax dispersion milling of quinacridones | — | 1984-09-04 |
| 4439240 | Aqueous milling of quinacridone pigment | — | 1984-03-27 |