Issued Patents 2002
Showing 1–2 of 2 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, Seung-tae Jung, Chul-woo Lee, Chong-sam Chung | 2002-08-06 |
| 6396638 | Optical pickup device capable of stable tracking | Jang-hoon Yoo, Kun-ho Cho, Seung-tae Jung, Chul-woo Lee, Joong-eon Seo | 2002-05-28 |