Issued Patents 2004
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6804185 | Optical pickup and information recording and/or reproducing apparatus including the same | Ikuya Kikuchi, Mitsuru Sato, Masayuki Iwasaki | 2004-10-12 |
| 6773781 | Multi-layer information recording medium and information recording and reproducing apparatus | Seiichi Ohsawa | 2004-08-10 |
| 6751175 | Aberration correcting device and optical pickup apparatus using the same | Ikuya Kikuchi | 2004-06-15 |
| 6738332 | Optical information recording and reproducing apparatus | Mitsuru Sato | 2004-05-18 |
| 6720056 | Multi-layer information recording medium | — | 2004-04-13 |
| 6714510 | Information recording medium including layer of uniform thickness and reproducing device thereof | Masayuki Iwasaki | 2004-03-30 |
| 6714495 | Pickup device and information recording/reproducing apparatus using the same | — | 2004-03-30 |
| 6683732 | Objective lens collision preventing device and method for manufacturing the same | Ikuya Kikuchi, Yoshitsugu Araki | 2004-01-27 |