Issued Patents 2005
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6946005 | Pyrrolidinyl-substituted para-phenylenediamine derivatives substituted with a cationic radical, and use of these derivatives for dyeing keratin fibers | Stéphane Sabelle, Laure Ramos, Michel Philippe | 2005-09-20 |
| 6923835 | Bis-para-phenylenediamine derivatives comprising a pyrrolidyl group and use of these derivatives for dyeing keratin fibres | Stéphane Sabelle, Laure Ramos | 2005-08-02 |
| 6884265 | Dyeing composition for dyeing keratinous fibers comprising at least one particular dicationic diazo dye | Laurent Vidal | 2005-04-26 |
| 6884266 | Dyeing composition for dyeing keratinous fibers comprising a cationic azo-dye | Laurent Vidal | 2005-04-26 |