Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8446915 | Method of operating internet protocol address and subnet system using the same | Ho-Cheol Choo | 2013-05-21 |
| 8391274 | Data call terminating service system and method for dynamic IP of mobile communication terminal | Ho-Cheol Choo | 2013-03-05 |
| 8300600 | System and method for releasing quality of service resources in mobile communication network | Ho Seung Ahn, Yun Geun KWAG | 2012-10-30 |
| 8054846 | Method of operating internet protocol address and subnet system using the same | Ho-Cheol Choo | 2011-11-08 |
| 7693163 | Method of operating internet protocol address and subnet system using the same | Ho-Cheol Choo | 2010-04-06 |