Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9173773 | Punctal plugs for the delivery of active agents | Hassan Chaouk, Han Cui, Walter R. Laredo, Zhigang Li, Aruna Nathan +1 more | 2015-11-03 |
| 8377042 | Ophthalmic devices for the controlled release of active agents | Zhigang Li, Michael J. Trezza, II, Aruna Nathan, Bret A. Coldren | 2013-02-19 |