Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7313801 | Disk-chucking device of disk drive | Jun Kun Choi, Nam Seok Kim | 2007-12-25 |
| 7289258 | Light modulator having variable blaze diffraction grating | Yoon Shik Hong, Min-Suk Oh, Ohk Kun Lim, Seung Heon Han | 2007-10-30 |
| 6738489 | Vibration speaker | Seuk Hwan Chung | 2004-05-18 |