Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10397788 | Multimedia message service method and system | Kyung-Tak Lee, Sang-Kyung Sung, Thirumalai Echampadi Seshadri | 2019-08-27 |
| 10313843 | Call processing system and method based on answer mode of push to talk over cellular user | Sang-Kyung Sung, Sung-Jin Park | 2019-06-04 |