Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11443611 | Method of providing activity notification and device thereof | Han-joo Chae, Hyun-soo NAH, Jong-hyun Ryu, Sang-ok Cha, Seung-eok Choi | 2022-09-13 |
| 11218860 | Method and device for providing service | Sang-ok Cha, Jong-hyun Ryu, Hee-Chul Jeon | 2022-01-04 |