Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9529781 | Apparatus and method for document format conversion | Changsheng Wang | 2016-12-27 |
| 9342488 | Terminal, apparatus and method for optimizing the description of text contents in a fixed layout document | Changsheng Wang | 2016-05-17 |