Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10305946 | Method for operating application providing group call service using mobile voice over internet protocol | Young Joon Ryu, Hyang Deok Yim, Choon-Taek Kim, Jung-Taek Kim, Dae Gil KIM +7 more | 2019-05-28 |