Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10684654 | Head-mounted display device with detachable device | Dong-Il Son, Chi-Hyun Cho, Jong-Chul Choi, Chang-Ryong Heo | 2020-06-16 |
| 8686688 | Portable charging apparatus for mobile communication terminal, charging method thereof, and charging system | Ki Wook Han, Ik-Hyun Cho, Tae-Soo Kim, Tae-Seon Kim | 2014-04-01 |