Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6214325 | Hydroxypropyl quaternary ammonium compounds containing an ester function, and cosmetic and dermatological compositions containing them | Michel Philippe, Didier Semeria | 2001-04-10 |
| 6046344 | Process for the preparation of hydroxypropylated quaternary ammonium compounds containing an ester functional group | Michel Philippe | 2000-04-04 |