Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6312811 | Photochromic naphtho [2,1-b]pyran compounds containing bithienyl or terthienyl substituents, process for their manufacture, and photochromic materials and articles obtained | Michel Frigoli, Nicole Rebiere-Galy, Corinne Moustrou, Andre Samat | 2001-11-06 |
| 6281366 | Photochromic [3H]naphtho[2,1-b]pyran compounds containing an acetylenic substituent, process for their manufacture, and photochromic materials and articles obtained | Michel Frigoli, Corinne Moustrou, Andre Samat | 2001-08-28 |
| 6136968 | Homoazaadamantane spirooxazines and their use in the field of ophthalmic optics | Karine Chamontin, Vladimir Lokshin, Andre Samat | 2000-10-24 |
| 6019914 | Photochromic spirooxazine compounds, their use in the field of ophthalmic optics | Vladimir Lokshin, Karine Chamontin, Andre Samat | 2000-02-01 |
| 5936016 | Photochromic compounds and methods for their use | Pierre Lareginie, Vladimir Lokshin, Andre Samat, Elena Zaballos Garcia | 1999-08-10 |
| 5754271 | Heterocyclic chromenes and their use in the field of ophthalmic optics | Jean L. Pozzo, Andre Samat | 1998-05-19 |
| 5631720 | Ophthalmic lenses with heterocyclic chromene compounds | Jean L. Pozzo, Andre Samat | 1997-05-20 |
| 5604280 | Ring spiro [fluorene-[2H]-benzopyranes] and their use in ophthalmic optics | Jean L. Pozzo, Andr e Samat, Vladimir Lokshin, Guena elle Harie | 1997-02-18 |
| 5529725 | Spirooxazines and use thereof in the field of ophthalmic optics | Andre Samat, Pierre Lareginie | 1996-06-25 |
| 5527911 | Heterocyclic chromenes | Jean L. Pozzo, Andre Samat | 1996-06-18 |
| 5233038 | Photochronic compounds of the indolino-spiro-benzoxazine type | Pascale Tardieu | 1993-08-03 |
| 5139707 | Indolino-spiroquinoxalino oxazine photochromatic compounds, methods for their preparation, photochromic compositions and articles containing such compounds | Pascale Tardieu | 1992-08-18 |
| 5114621 | Indolino-spiro-oxazine photochromic compounds with five-membered rings, method for their preparation, photochromic compositions and articles containing such compounds | Pascale Tardieu | 1992-05-19 |
| 4287337 | Spiropyran compounds of piperidine or thiazine rings | Francis Garnier, Yves Poirier, Gisele M. C. Petillon | 1981-09-01 |