Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9832557 | Slim microspeaker | Seul Ki Nam, Ji Hoon Kim, Min Chang KIM | 2017-11-28 |
| 9473837 | Sound transducer with ventilation structure | Kyu Dong Choi, Ji Hoon Kim, Joong Hak Kwon | 2016-10-18 |
| 9088840 | Vibration module for sound transducer | Kyu Dong Choi, In Ho Jeong, Joong Hak Kwon | 2015-07-21 |