Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8386793 | Method and apparatus for implementing electronic seal | Ningsheng Liu | 2013-02-26 |
| 8316379 | Method for invoking UOML instructions | Kaihong Zou | 2012-11-20 |
| 8311265 | Embedding and detecting hidden information | Shutian Yin, Yunming Zhang, Ningsheng Liu, Yuansong Liang, Changwei Liu +3 more | 2012-11-13 |
| 8312008 | Docbase management system and implementing method thereof | Xu Guo | 2012-11-13 |
| 8171389 | Method of hierarchical processing of a document and system therefor | Xu Guo, Changwei Liu, Kaihong Zou, Xiaoqing Lu | 2012-05-01 |