Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8659654 | Image verification with tiered tolerance | Xu Yang | 2014-02-25 |
| 6557120 | System and method for testing software reliability over extended time | Clark D. Nicholson, Zhiyuan Zhao, Haifeng Zhou | 2003-04-29 |