Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11488544 | Digital signage system and operating method therefor | Sangjoon Park, Wonsik KIM, Sungjin Kang, Byungchang Cha, Geunyong KIM +1 more | 2022-11-01 |
| 10552111 | Control device | Byungchang Cha, Sangjoon Park | 2020-02-04 |
| 10409544 | Display device and multi display device | Sangjoon Park, Byungchang Cha | 2019-09-10 |