Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6537329 | Cationic 2-sulphonylaminophenols, their use as couplers for oxidation dyeing, compositions containing them and dyeing methods | Laurent Vidal | 2003-03-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6537329 | Cationic 2-sulphonylaminophenols, their use as couplers for oxidation dyeing, compositions containing them and dyeing methods | Laurent Vidal | 2003-03-25 |