Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10606928 | Assistive technology for the impaired | Zhigang Li, Cary Timar | 2020-03-31 |
| 10282410 | Assistive technology for the impaired | Zhigang Li | 2019-05-07 |
| 10169320 | Assistive technology for the visually impaired | Zhigang Li | 2019-01-01 |
| 9223764 | Assistive technology for the visually impaired | Zhigang Li | 2015-12-29 |
| 8964201 | Assistive technology for the visually impaired | Zhigang Li | 2015-02-24 |
| 8687210 | Document data access | Brian Sue, Paul A. Walker, William T. Davis, William Morris Guthrie, Jr., Jason Bryant Weathersby | 2014-04-01 |
| 8619272 | Automated assistive technology for the visually impaired | Zhigang Li | 2013-12-31 |