Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7391762 | Call processing message converter and message converting method in internet protocol telephony exchange system | — | 2008-06-24 |
| 7277733 | System and method for providing web content provision service using subscriber terminal in exchange system | Jun-Young Kwon, Ji Sook Kim | 2007-10-02 |