Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7590228 | General charging method | Zhijian Lu, Xin Zhang, Qingchen Chu, Youkun Chen | 2009-09-15 |
| 7526075 | Method of implementing account charging and account charging system | Zhijian Lu, Xin Zhang, Qingchen Chu, Youkun Chen | 2009-04-28 |
| 7313230 | General charging method | Zhijian Lu, Xin Zhang, Qingchen Chu, Youkun Chen | 2007-12-25 |