Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7132534 | Para-phenylenediamine derivatives containing a pyrrolidyl group, and use of these derivatives for coloring keratin fibers | Stéphane Sabelle, Madeleine Leduc | 2006-11-07 |
| 7132543 | Para-phenylenediamine derivatives containing a disubstituted pyrrolidinyl group bearing a cationic radical, and use of the same for dyeing keratin fibers | Stéphane Sabelle | 2006-11-07 |
| 6946005 | Pyrrolidinyl-substituted para-phenylenediamine derivatives substituted with a cationic radical, and use of these derivatives for dyeing keratin fibers | Stéphane Sabelle, Madeleine Leduc, 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, Madeleine Leduc | 2005-08-02 |