Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7974403 | Method and system for called party to provide indication information to calling party | Yan Li, Yi Zhang, Jianfeng Liu | 2011-07-05 |
| 7882245 | Presence service access device, presence service system and method for publishing and acquiring presence information | Ning Ma, Qian Sun, Yang Zhao | 2011-02-01 |