Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10042992 | Image based CAPTCHA challenges | Wei-Liang Liu, Vinay Damodar Shet, Ying Liu, Aaron Malenfant, Haidong Shao +2 more | 2018-08-07 |
| 9760700 | Image based CAPTCHA challenges | Wei-Liang Liu, Vinay Damodar Shet, Ying Liu, Aaron Malenfant, Haidong Shao +2 more | 2017-09-12 |
| 9263055 | Systems and methods for three-dimensional audio CAPTCHA | Yannis Agiomyrgiannakis, David Abraham | 2016-02-16 |