Issued Patents 2019
Showing 1–2 of 2 patents
| 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 | Deok Yong Ahn, Sanghyuk Suh, Keum Ryong Kim, Tae Jeong LEE, Jaehyun Lee +4 more | 2019-12-31 |
| 10499211 | Methods for identifying contact between terminals, and computer program and application therefor | — | 2019-12-03 |