Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7508786 | Mobile communication system and method for exchanging data between mobile communication terminals using packet data communication | — | 2009-03-24 |
| 7433344 | Mobile communication system and method for providing real time messenger service among mobile communication terminals | Chul-Hwan Lee, Woo Hyuk Choi, Dong Ryul Lee, Hye-Kyoung Hwang, Sung-Min Kang | 2008-10-07 |