Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D937201 | Charger for vehicles driven electrically | Sechang Park, Sangwon Yoon, Yongho Lee, Kyeongchul Cho | 2021-11-30 |
| D920940 | Television receiver | Yoonkyeong Lee, Yongho Lee | 2021-06-01 |
| D913374 | Digital signage | Yoonkyeong Lee, Yongho Lee | 2021-03-16 |
| D910006 | Self ordering terminal with touch screen | Yongho Lee, Yoonkyeong Lee | 2021-02-09 |