Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6636464 | Optical pickup device capable of detecting stable error signal | Pyong-yong Seong, Jang-hoon Yoo, Byung-ryul Ryoo, Yong-Ki Son | 2003-10-21 |
| 6630684 | Photonic crystal organic light emitting device having high extraction efficiency | Yong Hee Lee | 2003-10-07 |
| 6587481 | Light emitting module and compatible optical pickup device adopting the same | Pyong-yong Seong, Byung-ryul Ryoo, Yong-Ki Son | 2003-07-01 |