Issued Patents All Time
Showing 201–208 of 208 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6307033 | Reactive blue dyes containing monochlorotriazine and acetoxyethyl sulfone groups | Sea Wha Oh, Myeong Nyeo Kang | 2001-10-23 |
| 6275461 | Optical pickup using an optical phase plate | Jang-hoon Yoo, Chul-woo Lee, Chong-sam Chung, Pyong-yong Seong, Kun-ho Cho +3 more | 2001-08-14 |
| 6272096 | Optical pickup using an optical phase plate | Jang-hoon Yoo, Chul-woo Lee, Chong-sam Chung, Pyong-yong Seong, Kun-ho Cho +3 more | 2001-08-07 |
| 6222812 | Optical pickup using an optical phase plate | Jang-hoon Yoo, Chul-woo Lee, Chong-sam Chung, Pyong-yong Seong, Kun-ho Cho +3 more | 2001-04-24 |
| 6222801 | Optical pickup using optically variable iris | Jang-hoon Yoo, Pyong-yong Seong, Yong Jae Lee, Yong-Ki Son | 2001-04-24 |
| 6221702 | Method of fabricating thin film transistor | Seung Ki Joo | 2001-04-24 |
| 6167004 | Error signal detecting apparatus of optical pickup adopting hologram grating | Yong Jae Lee, Pyong-yong Seong, Jang-hoon Yoo, Byung-ryul Ryoo, Yong-Ki Son +1 more | 2000-12-26 |
| 6088170 | Optical system for shaping light beams and an optical pickup employing the same | Chul-woo Lee, Pyong-yong Seong | 2000-07-11 |