Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7190657 | Optical pickup device | Chun Gi Kim, Oh Byoung Kwon, Woo Seok Choi, Sung-Wook Kim, No-Jun Kwak +1 more | 2007-03-13 |
| 6775459 | Variable optical attenuator | Yoon Shik Hong, Young Yun Kim, Jong Hyun Lee, Sung Cheon Jung, Jung-hyun Lee | 2004-08-10 |