Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6430139 | Objective lens for high-density optical focusing, and optical pickup using the same | Jang-hoon Yoo, Kun-ho Cho, Chul-woo Lee, Chong-sam Chung, Dong-Ho Shin | 2002-08-06 |
| 6400666 | Optical pickup device | Jang-hoon Yoo, Kun-ho Cho, Yong-hoon Lee, Seok-jung Kim, Chul-woo Lee +1 more | 2002-06-04 |
| 6396638 | Optical pickup device capable of stable tracking | Jang-hoon Yoo, Kun-ho Cho, Chul-woo Lee, Joong-eon Seo, Dong-Ho Shin | 2002-05-28 |