Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8765978 | Method of making indeno-fused naphthol materials | Anu Chopra, Barry Van Gemert, Huayun Yu | 2014-07-01 |
| 8741188 | Ophthalmic devices comprising photochromic materials having extended pi-conjugated systems | Anu Chopra, Jun Deng, Beon-Kyu Kim, David B. Knowles, Frank Molock +3 more | 2014-06-03 |
| 8647538 | Photochromic compounds having at least two photochromic moieties | Yunyi Lu, Robert W. Walters, Feng Wang, M. Frank Haley, Jason R. Lewis +3 more | 2014-02-11 |
| 8388872 | Photochromic materials having extended pi-conjugated systems and compositions and articles including the same | Anu Chopra, Jun Deng, Beon-Kyu Kim, David B. Knowles, Frank Molock +3 more | 2013-03-05 |
| 8158037 | Photochromic materials having extended pi-conjugated systems and compositions and articles including the same | Anu Chopra, Jun Deng, Beon-Kyu Kim, David B. Knowles, Frank Molock +3 more | 2012-04-17 |
| 8147725 | Photochromic materials having extended pi-conjugated systems and compositions and articles including the same | Anu Chopra, Jun Deng, Beon-Kyu Kim, David B. Knowles, Frank Molock +3 more | 2012-04-03 |
| 7556750 | Photochromic materials with reactive substituents | Barry Van Gemert | 2009-07-07 |
| 7481955 | Photochromic materials comprising metallocenyl groups | — | 2009-01-27 |