Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6829210 | Optical head and optical pickup | Kenji Yamamoto, Fumisada Maeda | 2004-12-07 |
| 6826133 | Optimizing a distance between lenses of a two objective lens for minimizing wavefront aberration and offsetting focus control | Isao Ichimura, Tatsuya Narahara | 2004-11-30 |
| 6798581 | Optical pickup method and apparatus for performing read and write operations on recording media | Kenji Yamamoto, Yoshiaki Kato | 2004-09-28 |
| 6683845 | Optical recording medium, method of producing same, and optical recording and reproduction device | Koichiro Kishima, Yuji Kuroda, Isao Ichimura, Kimihiro Saito | 2004-01-27 |
| 6683846 | Information recording disc having an anti-reflection layer and information recording/reproducing apparatus | Koichiro Kishima, Isao Ichimura, Yuji Kuroda | 2004-01-27 |