Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363796 | Cosmetic compositions for hardening soft brittle nails | Claude Bouillon, Jean Boulogne, Michel Guillon, Constantin Koulbanis | 1982-12-14 |
| 4337241 | Emulsions of the water-in-oil or oil-in-water type and cosmetic products using these emulsions | Jean-Claude Ser, Arlette Zabotto, Constantin Koulbanis | 1982-06-29 |
| 4318297 | Pendulum-type film hardness measurement tester | Jean-Claude Ser, Jean-Pierre Yquel | 1982-03-09 |