Issued Patents 2020
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10812425 | Method and system for providing quiz together with advertisement in instant message service (IMS) chat room | Chang Sub Jeon, Keun-Woo Lee | 2020-10-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10812425 | Method and system for providing quiz together with advertisement in instant message service (IMS) chat room | Chang Sub Jeon, Keun-Woo Lee | 2020-10-20 |