Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11086981 | Method for realizing the captcha with 3D models and device thereof | Jianguo Shen, Nan YUAN | 2021-08-10 |
| 9098513 | Methods and systems for differencing orderly dependent files | Liwei Ren | 2015-08-04 |
| 9043908 | Detection of encryption and compression applications | Cheng Zhang, Weisheng Xue | 2015-05-26 |
| 8862555 | Methods and apparatus for generating difference files | Jinju Long, Liwei Ren | 2014-10-14 |
| 8782082 | Methods and apparatus for multiple-keyword matching | Liwei Ren | 2014-07-15 |
| 8606772 | Efficient multiple-keyword match technique with large dictionaries | Liwei Ren | 2013-12-10 |
| 8359472 | Document fingerprinting with asymmetric selection of anchor points | Liwei Ren | 2013-01-22 |