Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840676 | Insoluble pigments and preparation thereof | Howard W. Clark | 1989-06-20 |
| 4773936 | Insoluble pigments and preparation thereof | Howard W. Clark, Ronald L. Yates | 1988-09-27 |
| 4769079 | Insoluble pigments and preparation thereof | Howard W. Clark, Ronald L. Yates | 1988-09-06 |
| 4769080 | Insoluble pigments and preparation thereof | Howard W. Clark | 1988-09-06 |