Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4333730 | Meta-phenylenediamines, dyeing compositions in which they are present and the corresponding dyeing process | Andree Bugaut, Majdi M. Shahin, Gregoire Kalopissis | 1982-06-08 |
| 4330292 | Dyeing compositions for keratin fibres containing meta-phenylenediamines | Andree Bugaut, Majdi M. Shahin, Gregoire Kalopissis | 1982-05-18 |
| 4329504 | Metaphenylenediamines | Andree Bugaut | 1982-05-11 |