Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9998506 | Method and apparatus for transmitting groupcast to support voice paging service in voice over internet protocol system | Si-Nam Woo, Hyun Ah Kim, Sang-II Choi | 2018-06-12 |
| 9203688 | VoIP service system using NAT and method of processing packet therein | — | 2015-12-01 |
| 8374178 | Apparatus and method for supporting NAT traversal in voice over internet protocol system | Si-Nam Woo, Hyun Ah Kim, Sang-Il Choi | 2013-02-12 |
| 8184622 | Integrated internet telephony system and signaling method thereof | — | 2012-05-22 |
| 8054839 | Apparatus and method of processing stateful address auto-configuration protocol in IPv6 network | Hyun-Wook Cha | 2011-11-08 |
| 6519251 | Apparatus and method for interconnecting private exchange system to the internet | — | 2003-02-11 |