Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888025 | Compounds which can be used for hair dyeing, process for their preparation, dyeing compositions in which they are present and corresponding hair-dyeing process | Alain Genet | 1989-12-19 |
| 4886517 | Dyeing composition for human hair containing an azo dye | Alex Junino, Jean Cotteret | 1989-12-12 |
| 4863480 | Substituted metaaminophenols, a process for their preparation, hair dyeing compositions containing them and a hair-dyeing process | Alex Junino | 1989-09-05 |