Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE43743 | Projection-type image display apparatus and method | Kun-ho Cho, Jang-hoon Yoo, Chul-woo Lee | 2012-10-16 |
| 7362693 | Near-field optical storage medium and optical data storage system therefor | Chul-woo Lee, Kun-ho Cho, Dong-Ho Shin, Joong-eon Seo, Byeong-Ho Park +3 more | 2008-04-22 |
| 7200098 | Objective lens for high-density optical focusing and an optical disk in an optical pickup | Jang-hoon Yoo, Kun-ho Cho, Chul-woo Lee, Dong-Ho Shin | 2007-04-03 |
| 7123437 | Recording apparatus enabling replacement of disk cartridge | Byoung-young Bae, Soon-kyo Hong, Chul-woo Lee, Young-min Cheong, Cheol-sung Yeon | 2006-10-17 |
| 7116627 | Compatible optical pickup device using a single light source | Jang-hoon Yoo, Ho-Cheol Lee, Ju-Hyung Lee, Chul-woo Lee, Young Il Kim +2 more | 2006-10-03 |
| 7088664 | Reflection type compound prism and optical pickup apparatus employing the same | Dae-sik Kim, Cheol-sung Yeon, Kun-ho Cho | 2006-08-08 |
| 7054259 | Near-field optical storage medium and optical data storage system therefor | Chul-woo Lee, Kun-ho Cho, Dong-Ho Shin, Joong-eon Seo, Byeong-Ho Park +3 more | 2006-05-30 |
| 7020950 | Disc balancing device | Soon-kyo Hong, Chul-woo Lee, Sung-hoon Choa | 2006-04-04 |
| 6938890 | Objective lens for high-density optical focusing and an optical disk in an optical pickup | Jang-hoon Yoo, Kun-ho Cho, Chul-woo Lee, Dong-Ho Shin | 2005-09-06 |
| 6885625 | Near-field optical storage medium and optical data storage system therefor | Chul-woo Lee, Kun-ho Cho, Dong-Ho Shin, Joong-eon Seo, Byeong-Ho Park +3 more | 2005-04-26 |
| 6844969 | Front projection type screen | Kun-ho Cho, Dae-sik Kim, Cheol-sung Yeon | 2005-01-18 |
| 6801492 | Solid immersion mirror type objective lens and optical pickup device adopting the same | Chul-woo Lee, Ki Won Lee, Dae-sik Kim | 2004-10-05 |
| 6798732 | Near-field optical storage medium and optical data storage system therefor | Chul-woo Lee, Kun-ho Cho, Dong-Ho Shin, Joong-eon Seo, Byeong-Ho Park +3 more | 2004-09-28 |
| 6657942 | Optical recording and reproducing apparatus having floating swing arm and optical disk for use therewith | Chul-woo Lee, Joong-eon Seo, Myong-do Ro, Kun-ho Cho, Dong-seob Jang +2 more | 2003-12-02 |
| 6650469 | Objective lens formed of a single lens and having high numerical aperture and an optical pickup apparatus adopting the same | Dae-sik Kim, Chul-woo Lee | 2003-11-18 |
| 6646976 | Optical pickup apparatus capable of reducing cross talk by adjacent tracks and a method therefor | Chong-sam Chung, Young-man Ahn, Tae Kyung Kim, Hea-jung Suh, Chul-woo Lee +2 more | 2003-11-11 |
| 6621787 | Optical storage medium having protective layer thicker than wavelength of useable light source | Chul-woo Lee, Kun-ho Cho, Dong-Ho Shin, Joong-eon Seo, Byeong-Ho Park +3 more | 2003-09-16 |
| 6619801 | Projection type image display apparatus realizing three-dimensional image | Kun-ho Cho, Chul-woo Lee, Dae-sik Kim | 2003-09-16 |
| 6583495 | Variable capacitor and memory device employing the same | Chul-woo Lee, Hee Wan Lee | 2003-06-24 |
| 6547398 | Projection-type image display apparatus and method | Kun-ho Cho, Jang-hoon Yoo, Chul-woo Lee | 2003-04-15 |
| 6509997 | Optical scanning apparatus | Jae-yong Eum | 2003-01-21 |
| 6510126 | Optical disc having textured structure, and a method of manufacturing the optical disc | Byung-Il Cho, Chul-woo Lee, Kun-ho Cho, Cheol-Seung Yeon | 2003-01-21 |
| 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 |