Issued Patents 2004
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6807142 | Optical information recording medium and method for initializing the same | Ken'ichi Nagata, Noboru Yamada, Katsumi Kawahara | 2004-10-19 |
| 6795389 | Optical information recording medium with substrate and multiple information | Ken'ichi Nagata | 2004-09-21 |
| 6771587 | Optical information recording medium with plural information layers | Ken'ichi Nagata, Nobuo Akahira | 2004-08-03 |
| 6762985 | Optical recording method and optical recording device | Shigeaki Furukawa, Yuuichi Kamioka, Norifumi Oda | 2004-07-13 |
| 6754143 | Optical information recording medium, and method and apparatus for recording/reproducing information thereon | Tetsuya Akiyama, Kenji Narumi | 2004-06-22 |
| 6744724 | Recording and reproducing method for optical information recording medium and optical information recording medium | Ken'ichi Nagata, Noboru Yamada, Nobuo Akahira | 2004-06-01 |
| 6711105 | Method and apparatus for writing and reading optical recording medium | Kenji Narumi | 2004-03-23 |
| 6707776 | Recording and reproducing method of optical information recording medium | Ken'ichi Nagata, Eiji Ohno, Nobuo Akahira, Kenji Narumi | 2004-03-16 |
| 6700849 | Method and apparatus for writing and reading optical recording medium | Kenji Narumi | 2004-03-02 |
| 6697313 | Optical information recording and reproducing system with overwrite capability and recording medium for use therewith | Ken'ichi Nagata, Eiji Ohno, Nobuo Akahira, Kenji Narumi | 2004-02-24 |
| 6683739 | Optical information recording and reproducing system with overwrite capability and recording medium for use therewith | Ken'ichi Nagata, Eiji Ohno, Nobuo Akahira, Kenji Narumi | 2004-01-27 |