Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6266315 | Catadioptric optical system, optical pickup and optical disk drive employing the same, and optical disk | Chul-woo Lee, Chong-sam Chung, Cheol-sung Yeon, Joong-eon Seo, Young-min Cheong +4 more | 2001-07-24 |