Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7732507 | Spirotetrathiocarbamates and spirooxothiocarbamates | Aref Jallouli, Kimberly Morgan, Sirisoma Wanigatunga | 2010-06-08 |
| 7713452 | Compounds that absorb ultraviolet light, methods of their preparation and optical lenses containing them | Joel M. Kauffman, Peter T. Litak | 2010-05-11 |
| 7622526 | Thermoset material based on antiplasticizing polythiourethane and ophthalmic lens comprising an antiplasticized thermoset material | Nicolas Droger, Jean-Louis Halary, Gilles Richard | 2009-11-24 |
| 7446228 | Thiophosphine compounds | Sirisoma Wanigatunga, Aref Jallouli, Yassin Turshani | 2008-11-04 |
| 7378556 | Process for making thiophosphine compounds | Sirisoma Wanigatunga, Aref Jallouli, Yassin Turshani | 2008-05-27 |
| 7129321 | Thiophosphine compounds and methods of making polymerizable compositions containing them and their use for making ophthalmic lenses | Sirisoma Wanigatunga, Aref Jallouli, Yassin Turshani | 2006-10-31 |
| 5833885 | Photochromic compounds | Sean D. Marsden | 1998-11-10 |
| 5623005 | Photochromic naphthopyran compounds | Katharine E. Smith, Christopher David Gabbutt, John David Hepworth | 1997-04-22 |
| 5520853 | Photochromic compounds | Sean D. Marsden, John David Hepworth, Christopher David Gabbutt | 1996-05-28 |
| 5446149 | Bridged spiroxazine photochromic compounds | Sean D. Marsden | 1995-08-29 |
| 5446150 | Photochromic spiroxazine compounds | Sean D. Marsden, Victoria E. Askew | 1995-08-29 |
| 5446151 | Photo reactive spiro-benzoxazine compounds | John David Hepworth, Christopher David Gabbutt, Sean D. Marsden | 1995-08-29 |
| 4913544 | Photochromic articles | John David Hepworth | 1990-04-03 |
| 4851530 | Spiro-oxazine compounds | — | 1989-07-25 |