Issued Patents 1994
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5364413 | 3-substituted para-aminophenols, process for preparing them, their use for dyeing keratinous fibres and the intermediate compounds used in the preparation process | Alain Genet, Gerard Lang | 1994-11-15 |
| 5364414 | Tinctorial composition for keratinous fibres containing oxidation dye precursors and aminoindole couplers, methods for dyeing using these compositions and new compounds | Gerard Lang, Jean Cotteret, Jean J. Vandenbossche | 1994-11-15 |
| 5354870 | Indole derivatives for dyeing keratin materials | Gerard Lang, Serge Forestier, Herve Richard, Jean J. Vandenbossche | 1994-10-11 |
| 5334377 | Alkylamino mercaptoalkylamides and their use as a reducing agent in a process for the permanent deformation of hair | Gerard Malle, Bernadette Luppi | 1994-08-02 |
| 5279620 | Tinctorial compositions for keratin fibres containing precursors of oxidation colorants and indole couplers, and dyeing processes using these compositions | Gerard Lang | 1994-01-18 |