Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11007466 | Air purifier with hinged filter frame | Sang-Woo Kang, Jin Min Kim | 2021-05-18 |
| 11007467 | Air purifier with hinged filter frame | Sang-Woo Kang, Jin Min Kim | 2021-05-18 |
| 10918984 | Air purifier with hinged filter frame | Sang-Woo Kang, Jin Min Kim | 2021-02-16 |
| 10900671 | Slim-type air processing device | Sang-Woo Kang | 2021-01-26 |