Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6798731 | Optical pickup for and method of correcting aberration due to thickness variations of optical media | Tae Kyung Kim, Chong-sam Chung, Young-man Ahn | 2004-09-28 |
| 6788473 | Objective lens device for correcting chromatic aberration and optical pickup employing the same | Tae Kyung Kim, Young-man Ahn, Chong-sam Chung | 2004-09-07 |
| 6785209 | Optical pickup for improving properties of a reproduction signal | Chong-sam Chung, Tae Kyung Kim, Young-man Ahn | 2004-08-31 |
| 6724710 | Spherical abberation compensator and optical pickup using the same | Chong-sam Chung, Young-man Ahn, Tae Kyung Kim, Jong-bae Kim | 2004-04-20 |
| 6678233 | Objective lens and optical pickup device using the same | Chong-sam Chung, Tae Kyung Kim, Young-man Ahn | 2004-01-13 |