Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D936038 | Audio player | Kyungmin Kim | 2021-11-16 |
| D928737 | Audio player | Kyungmin Kim | 2021-08-24 |
| D924843 | Audio player | Jun Ki Kim, Sungyong Park, Chaelin Lee | 2021-07-13 |
| D924202 | Audio player | Jun Ki Kim, Sungyong Park, Chaelin Lee | 2021-07-06 |
| D922980 | Audio player | Kyungmin Kim | 2021-06-22 |
| D913255 | Socket for vacuum tube | Jun Ki Kim, Sungyong Park, Chaelin Lee | 2021-03-16 |
| D907605 | Case for vacuum tubes | Jun Ki Kim, Sungyong Park, Chaelin Lee | 2021-01-12 |