Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7990833 | Optical pickup device with diffraction patterns on object lens | Soo-han Park, Young-man Ahn | 2011-08-02 |
| 7881168 | Optical pick-up apparatus for multi recording/reproducing | Bong-gi Kim, Seong Su Park, Chun-seong Park, Soo-han Park | 2011-02-01 |