Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4333730 | Meta-phenylenediamines, dyeing compositions in which they are present and the corresponding dyeing process | Andree Bugaut, Jean J. Vandenbossche, Gregoire Kalopissis | 1982-06-08 |
| 4330292 | Dyeing compositions for keratin fibres containing meta-phenylenediamines | Andree Bugaut, Jean J. Vandenbossche, Gregoire Kalopissis | 1982-05-18 |