Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5364414 | Tinctorial composition for keratinous fibres containing oxidation dye precursors and aminoindole couplers, methods for dyeing using these compositions and new compounds | Gerard Lang, Alex Junino, Jean J. Vandenbossche | 1994-11-15 |
| 5340366 | Hair dye compositions and process comprising and utilizing a combination of isatin and aminopyrimidine derivatives | Gerard Lang | 1994-08-23 |
| 5279616 | Hair dye compositions and process comprising and utilizing a combination of isatin and aminopyridine derivatives | Gerard Lang | 1994-01-18 |
| 5279619 | Process for dyeing keratinous fibers with 2,4-diamino-1,3-dimethoxybenzene at an acid ph and compositions employed | Marie-Pascale Audousset | 1994-01-18 |