Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6692538 | Use of novel indole compounds for dyeing and making up keratin materials, compositions comprising them and dyeing processes | Nicole Bonaventure, Patrick Gilard, Michel Dubois | 2004-02-17 |
| 6407260 | Indole compound | Nicole Bonaventure, Patrick Gilard, Michel Dubois | 2002-06-18 |
| 5676724 | Method of improving the geometrical shape of a tube used for making a preform by selectively etching the bore of the tube | Christian Le Sergent | 1997-10-14 |
| 4952225 | Method of making an internally-doped tube of transparent glass, in particular for manufacturing rare-earth-doped optical fibers | Christian Le Sergent, Josiane Ramos | 1990-08-28 |