Issued Patents All Time
Showing 25 most recent of 47 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11874434 | Ophthalmic devices comprising photochromic materials with reactive substituents | Wenjing Xiao, Shivkumar Mahadevan, Frank Molock | 2024-01-16 |
| 11256002 | Ophthalmic devices comprising photochromic materials with reactive substituents | Wenjing Xiao, Shivkumar Mahadevan, Frank Molock | 2022-02-22 |
| 10197707 | Ophthalmic devices comprising photochromic materials with reactive sub substituents | Wenjing Xiao, Shivkumar Mahadevan, Frank Molock | 2019-02-05 |
| 9139552 | Indeno-fused naphthopyrans having ethylenically unsaturated groups | Wenjing Xiao | 2015-09-22 |
| 9073838 | Method of making indeno-fused naphthol materials | Anu Chopra, Wenjing Xiao, Huayun Yu | 2015-07-07 |
| 9052438 | Ophthalmic devices comprising photochromic materials with reactive substituents | Wenjing Xiao, Shivkumar Mahadevan, Frank Molock | 2015-06-09 |
| 9028728 | Photochromic materials that include indeno-fused naphthopyrans | Kevin E. Bancroft, Anu Chopra, Xiao-Man Dai, Beon-Kyu Kim, David B. Knowles +8 more | 2015-05-12 |
| 8765978 | Method of making indeno-fused naphthol materials | Anu Chopra, Wenjing Xiao, Huayun Yu | 2014-07-01 |
| 7584630 | Photochromic ocular devices | — | 2009-09-08 |
| 7560056 | Photochromic contact lenses and methods of manufacturing | Anil Kumar, Frank P. Mallak, Robert W. Walters | 2009-07-14 |
| 7556751 | Photochromic materials having electron-withdrawing substituents | Anu Chopra, Beon-Kyu Kim | 2009-07-07 |
| 7556750 | Photochromic materials with reactive substituents | Wenjing Xiao | 2009-07-07 |
| 7320826 | Photochromic articles with reduced temperature dependency and methods for preparation | Anil Kumar, Forrest R. Blackburn, Clara E. Nelson | 2008-01-22 |
| 7094368 | Pyrano-quinolines, pyrano-quinolinones, combinations thereof, photochromic compositions and articles | Beon-Kyu Kim, Anil Kumar | 2006-08-22 |
| 6630597 | Photochromic 6-aryl substituted 3H-naphtho(2,1-b)pyrans | Jibing Lin | 2003-10-07 |
| 6348604 | Photochromic naphthopyrans | Clara M. Nelson, Anu Chopra, David B. Knowles, Anil Kumar | 2002-02-19 |
| 6106744 | Photochromic pyrano-fused naphthopyrans | Christopher D. Selvig | 2000-08-22 |
| 5869658 | Photochromic indeno-fused naptho2,1-b!pyrans | Jibing Lin | 1999-02-09 |
| 5753146 | Photochromic naphthopyran compositions of neutral color | Delbert G. Kish | 1998-05-19 |
| 5674432 | Photochromic naphthopyran compounds | David B. Knowles | 1997-10-07 |
| 5658500 | Substituted naphthopyrans | Anil Kumar, David B. Knowles | 1997-08-19 |
| 5658501 | Substituted naphthopyrans | Anil Kumar, David B. Knowles | 1997-08-19 |
| 5651923 | Substituted naphthopyrans | Anil Kumar, David B. Knowles | 1997-07-29 |
| 5650098 | Substituted naphthopyrans | Anil Kumar, David B. Knowles | 1997-07-22 |
| 5645767 | Photochromic indeno-fused naphthopyrans | — | 1997-07-08 |