Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5754271 | Heterocyclic chromenes and their use in the field of ophthalmic optics | Robert Guglielmetti, Andre Samat | 1998-05-19 |
| 5631720 | Ophthalmic lenses with heterocyclic chromene compounds | Robert Guglielmetti, Andre Samat | 1997-05-20 |
| 5604280 | Ring spiro [fluorene-[2H]-benzopyranes] and their use in ophthalmic optics | Robert Guglielmetti, Andr e Samat, Vladimir Lokshin, Guena elle Harie | 1997-02-18 |
| 5527911 | Heterocyclic chromenes | Robert Guglielmetti, Andre Samat | 1996-06-18 |