Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12058476 | Methods, systems, and computer program products for providing video call service | Sang Il Ahn, Eun-Hee Choi | 2024-08-06 |
| 12010457 | Methods, systems, and computer program products for providing video call service | Sang Il Ahn, Eun-Hee Choi | 2024-06-11 |
| 11606533 | Methods and devices for visually displaying countdown time on graphical user interface | Sang Il Ahn, Eun-Hee Choi | 2023-03-14 |