Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8732216 | Docbase management system and method for extending docbase management system and functions | Xu Guo, Donglin Wang, Changwei Liu | 2014-05-20 |
| 8538068 | Embedding and detecting hidden information | Donglin Wang, Shutian Yin, Yunming Zhang, Yuansong Liang, Changwei Liu +3 more | 2013-09-17 |
| 8423521 | Method and apparatus for storing document data in docbase management system | Donglin Wang, Haifeng Jiang, Liwei Wang | 2013-04-16 |
| 8386793 | Method and apparatus for implementing electronic seal | Donglin Wang | 2013-02-26 |
| 8386943 | Method for query based on layout information | Donglin Wang, Ruihua Wang | 2013-02-26 |
| 8311265 | Embedding and detecting hidden information | Donglin Wang, Shutian Yin, Yunming Zhang, Yuansong Liang, Changwei Liu +3 more | 2012-11-13 |