Issued Patents All Time
Showing 51–52 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4200432 | Dye composition containing oxidation dye and diphenylamine | Gregoire Kalopissis, Francoise Estradier | 1980-04-29 |
| 4185958 | Compositions based on direct dyestuffs containing a 2,5-dihydroxyphenylcarboxylic acid or a salt thereof | Jean F. Grollier, Jean-Jacques Vandenboosche | 1980-01-29 |