Issued Patents All Time
Showing 76–83 of 83 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, Yong-Moon Lee, Cheol-sung Yeon, Joong-eon Seo +4 more | 2001-07-24 |
| 5987924 | Lens mold and method of manufacturing a lens | Chul-woo Lee, Kyung-hwa Rim, Chong-sam Chung, Kun-ho Cho, Pyong-yong Seong +2 more | 1999-11-23 |
| 5933401 | Optical pickup having plural optical sources and plural optical detectors | Chul-woo Lee, Chong-sam Chung, Pyeong-yong Seong, Kun-ho Cho, Hyun-seob Choi +3 more | 1999-08-03 |
| 5822135 | Lens device including a light controlling mechanism and an optical pickup apparatus using a lens device | Chul-woo Lee, Kyung-hwa Rim, Chong-sam Chung, Kun-ho Cho, Pyong-yong Seong +2 more | 1998-10-13 |
| 5796700 | Optical pickup to circularize light emitted from a light source | Chul-woo Lee, Pyeong-yong Seong | 1998-08-18 |
| 5734512 | Dual-focus objective lens of optical pickup | Chul-woo Lee, Kyung-hwa Rim | 1998-03-31 |
| 5665957 | Lens device comprising light blocking means and an optical pickup apparatus using the lens device | Chul-woo Lee, Kyung-hwa Rim, Chong-sam Chung, Kun-ho Cho, Pyong-yong Seong +2 more | 1997-09-09 |
| 5210056 | Method for forming a gate oxide film of a semiconductor device | Chil-kun Pong, Myeon-Koo Kang, Yang-Koo Lee | 1993-05-11 |