Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9422447 | Azetidinium-containing copolymers and uses thereof | Frank Chang, Yongxing Qiu, John Dallas Pruitt, Chung-Yuan Chiang, Manivakkam J. Shankernarayanan +2 more | 2016-08-23 |
| 9315669 | Method for making UV-absorbing ophthalmic lenses | Frank Chang, Uwe Haken, Joseph I. Weinschenk, III | 2016-04-19 |