Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9317676 | Image-based CAPTCHA exploiting context in object recognition | Jia Liu, Bin Zhu, Shipeng Li, Ning Xu | 2016-04-19 |
| 8483518 | Image-based CAPTCHA exploiting context in object recognition | Bin Zhu, Jia Liu, Shipeng Li, Ning Xu | 2013-07-09 |