Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5641885 | Carboxylated amino-1,3,5 triazines and derivatives thereof | Ram B. Gupta | 1997-06-24 |
| 5019130 | Substituted N-aryl pyrroles in oxidative hair dye compositions | — | 1991-05-28 |