Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7455698 | Cationic dyes and dyestuff for keratin fibres containing said compounds | Laurent Chassot, Sylviane Oberson, Gisela Umbricht, Hans-Juergen Braun | 2008-11-25 |
| 6461388 | Diaminobenzene derivative compounds and dye compositions containing same | Laurent Chassot | 2002-10-08 |
| 6231622 | Dye compositions, especially for dyeing hair, containing indane derivative compounds | Laurent Chassot | 2001-05-15 |