Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8130760 | Session initiation and maintenance while roaming | Chong Jin Koh, Bryan Ford, Markus Hahn, Gabriel Berryn Levy, Ching-Hai Tsai +2 more | 2012-03-06 |
| 8116735 | System and method for mobile telephone roaming | Jing Liu, Xiaolei Qin | 2012-02-14 |
| 7706373 | Session initiation and maintenance while roaming | Chong Jin Koh, Bryan Ford, Markus Hahn, Gabriel Berryn Levy, Ching-Hai Tsai +2 more | 2010-04-27 |