Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5904878 | Fluorescent orange azo pigments | Paul A. Merchak, Russell Schwartz | 1999-05-18 |
| 5863459 | Fluorescent yellow azo pigments | Paul A. Merchak, Russell Schwartz, Anthony C. Zwirgzdas | 1999-01-26 |
| 5575843 | Process for improving color value of a pigment | Ramasamy Krishnan, Marilyn C. Yamat, Russell Schwartz | 1996-11-19 |
| 5024698 | Monoazo pigment compositions | Russell Schwartz | 1991-06-18 |
| 5021090 | Water-based diarylide pigment compositions | Russell Schwartz | 1991-06-04 |
| 4946508 | Disazo pyrazolone pigment compositions | Russell Schwartz | 1990-08-07 |
| 4946509 | Diarylide pigment compositions | Russell Schwartz, Anthony C. Zwirgzdas | 1990-08-07 |