Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10097792 | Mobile device and method for messenger-based video call service | Sejun Song, Junseok Lee, Chulhwan Lee | 2018-10-09 |
| 9172905 | Mobile device and method for messenger-based video call service | Sejun Song, Junseok Lee, Chulhwan Lee | 2015-10-27 |