Issued Patents All Time
Showing 101–105 of 105 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4692166 | Use of halogenated 4,5-methylenedioxyphenol in the dyeing of keratinous fibres | Gerard Lang, Herve Andrean, Jean Cotteret | 1987-09-08 |
| 4690685 | Dyeing composition for keratinous fibres containing at least one co-solubilized N-substituted 2-nitro-para-phenylenediamine | Jean F. Grollier, Jean Cotteret, Alain Genet | 1987-09-01 |
| 4666453 | Nitro-meta-phenylenediamines halogenated in the 6th position and their use in dyeing keratinic substances | Gerard Lang, Ginette Jeanminet | 1987-05-19 |
| 4324553 | Hair dyeing compositions containing at least one 2,4-diamino-alkylbenzene as coupler | Andree Bugaut | 1982-04-13 |
| 4323360 | Dyeing compositions for hair which contain 2,4-diamino-butoxybenzene and/or a salt thereof as the coupling agent | Andree Bugaut | 1982-04-06 |