| 7465415 |
Photochromic materials derived from ring-opening monomers and photochromic initiators |
Feng Wang, Kevin J. Stewart, Carol L. Knox, Anu Chopra, Patrick M. Brown |
2008-12-16 |
| 7368072 |
Photochromic contact lenses and methods of manufacturing |
Anil Kumar, Frank P. Mallak, Robert W. Walters |
2008-05-06 |
| 7166357 |
Photochromic articles that activate behind ultraviolet radiation blocking transparencies and methods for preparation |
Anil Kumar, Michael S. Misura, Robert W. Walters, Anu Chopra, Clara E. Nelson |
2007-01-23 |
| 6555028 |
Polymeric matrix compatibilized naphthopyrans |
Robert W. Walters |
2003-04-29 |
| 6296785 |
Indeno-fused photochromic naphthopyrans |
Clara M. Nelson, Anu Chopra, Olga G. Petrovskaia, David B. Knowles, Anil Kumar |
2001-10-02 |
| 6113814 |
Polymerizable polyalkoxylated naphthopyrans |
Anu Chopra, Anil Kumar |
2000-09-05 |
| 5961892 |
Polyalkoxylated naphthopyrans |
Kevin J. Stewart |
1999-10-05 |
| 5656206 |
Substituted naphthopyrans |
David B. Knowles, Anil Kumar |
1997-08-12 |
| 5573712 |
Substituted naphthopyrans |
Anil Kumar, David B. Knowles |
1996-11-12 |
| 5464567 |
Photochromic tetraphenyl naphthodipyrans |
David B. Knowles |
1995-11-07 |
| 5066818 |
Photochromic naphthopyran compounds |
Maria P. Bergomi |
1991-11-19 |
| 4696695 |
Sulfamoyl urea derivatives |
— |
1987-09-29 |
| 4602939 |
Sulfamoyl urea derivatives |
— |
1986-07-29 |