Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10321237 | Multi-layer voice coil plate and flat type speaker comprising the same | Dong-Hoon Min, Soon Kwan Kwon | 2019-06-11 |
| 7466833 | Bone vibrating speaker using the diaphragm and mobile phone thereby | Oug-Ki Lee | 2008-12-16 |
| 7319773 | Subminiature bone vibrating speaker using the diaphragm and mobile phone thereby | Oug-Ki Lee | 2008-01-15 |