Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4558133 | p-(Pyridinium-vinyl)-N,N-(disubstituted-aniline salts for dyeing paper and their preparation | — | 1985-12-10 |
| 4540523 | Phenylalkylamino-styryl dyestuffs | — | 1985-09-10 |
| 4422969 | Cationic styryl dyestuffs | — | 1983-12-27 |
| 4366314 | Dimethine dyestuffs, their preparation and their use for dyeing synthetic and natural materials | — | 1982-12-28 |
| 4258182 | Quaternized amino-substituted styryl dyestuffs | — | 1981-03-24 |