Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10609470 | Speaker device and audio output device including the same | Ho-sun Lee, Ho Jin Yoon | 2020-03-31 |
| 10136212 | Speaker device and audio output device including the same | Ho-sun Lee, Ho Jin Yoon | 2018-11-20 |
| 8014238 | Optical pickup device | Seok-jung Kim | 2011-09-06 |