| 7557208 |
Naphthols useful for preparing indeno-fused photochromic naphthopyrans |
Robert W. Walters, Anil Kumar, Anu Chopra |
2009-07-07 |
| 7517982 |
Naphthols useful for preparing indeno-fused photochromic naphthopyrans |
Robert W. Walters, Anil Kumar, Anu Chopra |
2009-04-14 |
| 7320826 |
Photochromic articles with reduced temperature dependency and methods for preparation |
Anil Kumar, Barry Van Gemert, Forrest R. Blackburn |
2008-01-22 |
| 7262295 |
Indeno-fused photochromic naphthopyrans, naphthols and photochromic articles |
Robert W. Walters, Anil Kumar, Anu Chopra |
2007-08-28 |
| 7166357 |
Photochromic articles that activate behind ultraviolet radiation blocking transparencies and methods for preparation |
Anil Kumar, Michael S. Misura, Robert W. Walters, Barry Van Gemert, Anu Chopra |
2007-01-23 |