Issued Patents 2004
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821707 | Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information | Mayumi Uno, Noboru Yamada, Katsumi Kawahara, Hiroyuki Ohta, Ken'ichi Nagata | 2004-11-23 |
| 6743527 | Optical disk, method for producing the same, and apparatus for producing the same | Kazuya Hisada, Kazuhiro Hayashi, Kazuo Inoue | 2004-06-01 |
| 6743320 | Method and apparatus of optical information recording medium, and optical information recording medium | Kazuya Hisada, Kazuhiro Hayashi | 2004-06-01 |
| 6707776 | Recording and reproducing method of optical information recording medium | Ken'ichi Nagata, Kenichi Nishiuchi, Nobuo Akahira, Kenji Narumi | 2004-03-16 |
| 6706359 | Optical information recording medium and method for manufacturing the same | Norihisa Mino, Hidemi Isomura | 2004-03-16 |
| 6697313 | Optical information recording and reproducing system with overwrite capability and recording medium for use therewith | Ken'ichi Nagata, Kenichi Nishiuchi, 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, Kenichi Nishiuchi, Nobuo Akahira, Kenji Narumi | 2004-01-27 |