Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7355953 | Optical pickup for cutting off optical noise and optical recording and/or reproducing apparatus using the same | Ui-yol Kim, Byung-ryul Ryoo, Pyong-yong Seong, Kyung-ui Park | 2008-04-08 |
| 6686697 | Circuit to protect a light element | Byung-ryul Ryoo, Kyung-ui Park, Ui-yol Kim, Pyong-yong Seong | 2004-02-03 |