Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |