Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10523812 | Method and system for providing ringback tone service and ringtone service in Voice over Internet Protocol (VoIP) call service | Sanghyuk Suh, Keum Ryong Kim, Tae Jeong LEE, Jaehyun Lee, Min Jeong Kim +4 more | 2019-12-31 |
| 5729300 | Double-screen simultaneous viewing circuit of a wide-television | — | 1998-03-17 |