Issued Patents All Time
Showing 51–75 of 98 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6449229 | Optical pickup assembly with adjustable inclination | Seok-jung Kim, Byung-ryul Ryoo, Yong-Ki Son, Pyong-yong Seong, Yong Jae Lee +1 more | 2002-09-10 |
| 6430139 | Objective lens for high-density optical focusing, and optical pickup using the same | Kun-ho Cho, Seung-tae Jung, Chul-woo Lee, Chong-sam Chung, Dong-Ho Shin | 2002-08-06 |
| 6400666 | Optical pickup device | Kun-ho Cho, Yong-hoon Lee, Seok-jung Kim, Seung-tae Jung, Chul-woo Lee +1 more | 2002-06-04 |
| 6400658 | DVD-RAM disk reproduction apparatus for reducing errors during detection of identification data | Chang-jin Yang, Pyong-yong Seong, Seong-sin Joo, Soo-yul Jung, Jung-Eon Seo +2 more | 2002-06-04 |
| 6396638 | Optical pickup device capable of stable tracking | Kun-ho Cho, Seung-tae Jung, Chul-woo Lee, Joong-eon Seo, Dong-Ho Shin | 2002-05-28 |
| 6381207 | Optical pickup movable to control beam shift and field angle in an optical disk drive | Byung-ryul Ryoo, Pyong-yong Seong, Seok-jung Kim, Yong-Ki Son, Tae Kyung Kim +1 more | 2002-04-30 |
| 6363046 | Optical recording/pickup head compatible with a digital versatile disk (DVD) and a recordable compact disk (CD-R) using a holographic variable aperture | Chul-woo Lee | 2002-03-26 |
| 6345029 | Optical pickup apparatus and method | Chul-woo Lee | 2002-02-05 |
| 6337841 | Compatible optical pickup | Kun-soo Kim, Jong-ryull Kim, Myoung Soo Choi, Hyung-taek Oh, Jong-hwa Yu +3 more | 2002-01-08 |
| 6304540 | Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens | Chul-Hoo Lee | 2001-10-16 |
| 6285646 | Optical pickup using objective lens compatible with a plurality of optical disks | Yong Jae Lee, Pyong-yong Seong, Chul-woo Lee | 2001-09-04 |
| 6275461 | Optical pickup using an optical phase plate | Chul-woo Lee, Chong-sam Chung, Pyong-yong Seong, Kun-ho Cho, Hyun-seob Choi +3 more | 2001-08-14 |
| 6272096 | Optical pickup using an optical phase plate | Chul-woo Lee, Chong-sam Chung, Pyong-yong Seong, Kun-ho Cho, Hyun-seob Choi +3 more | 2001-08-07 |
| 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 |
| 6259668 | Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses | Chul-woo Lee | 2001-07-10 |
| 6243216 | Fast responding optical modulator | Pyong-yong Seong | 2001-06-05 |
| 6233217 | Optical pickup for recording/reproduction with a light emitting diode light source | Chul-woo Lee, Kun-ho Cho | 2001-05-15 |
| 6222801 | Optical pickup using optically variable iris | Pyong-yong Seong, Yong Jae Lee, Tae Kyung Kim, Yong-Ki Son | 2001-04-24 |
| 6222812 | Optical pickup using an optical phase plate | Chul-woo Lee, Chong-sam Chung, Pyong-yong Seong, Kun-ho Cho, Hyun-seob Choi +3 more | 2001-04-24 |
| 6212154 | Optical pickup for optical disk and light source for optical pickup | Chul-woo Lee | 2001-04-03 |
| 6198714 | Optical pickup having an objective lens compatible with a plurality of optical disk formats | Chong-sam Chung, Chul-woo Lee, Kun-ho Cho | 2001-03-06 |
| 6167004 | Error signal detecting apparatus of optical pickup adopting hologram grating | Yong Jae Lee, Tae Kyung Kim, Pyong-yong Seong, Byung-ryul Ryoo, Yong-Ki Son +1 more | 2000-12-26 |
| 6147955 | Optical pickup device to read from and record information to disks of different thicknesses | Chul-woo Lee | 2000-11-14 |
| 6114689 | Optical pickup device | Kun-ho Cho, Yong-hoon Lee, Chul-woo Lee, Chong-sam Chung | 2000-09-05 |
| 6091691 | Optical pickup having an objective lens compatible with a plurality of optical disk formats | Chong-sam Chung, Chul-woo Lee, Kun-ho Cho | 2000-07-18 |