Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4666453 | Nitro-meta-phenylenediamines halogenated in the 6th position and their use in dyeing keratinic substances | Alex Junino, Gerard Lang | 1987-05-19 |
| 4473374 | Nitrated coupler compounds useful in direct dyeing and simultaneous oxidation and direct dyeing of keratinic fibers | Andree Bugaut | 1984-09-25 |
| 4361421 | Hair-dyeing compositions based on para-phenylenediamines | Andree Bugaut | 1982-11-30 |
| 4330291 | Nitrated coupler compounds useful in direct dyeing and simultaneous oxidation and direct dyeing of keratinic fibers | Andree Bugaut | 1982-05-18 |