Issued Patents 2002
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6487151 | Optical information recording and reproducing system with overwrite capability and recording medium for use therewith | Ken'ichi Nagata, Eiji Ohno, Nobuo Akahira, Kenji Narumi | 2002-11-26 |
| 6483788 | Method and apparatus for writing and reading optical recording medium | Kenji Narumi | 2002-11-19 |
| 6469964 | Optical recording medium and recording/reproduction method and apparatus therefor | Tetsuya Akiyama, Shigeaki Furukawa, Kenji Narumi, Hiroyuki Yamaguchi | 2002-10-22 |
| 6456584 | Optical information recording medium comprising a first layer having a phase that is reversibly changeable and a second information layer having a phase that is reversibly changeable | Ken'ichi Nagata, Noboru Yamada, Nobuo Akahira | 2002-09-24 |
| 6434095 | Optical information recording medium, manufacturing method therefor, manufacturing apparatus therefor, and optical information recording and reproducing apparatus | Ken'ichi Nagata, Nobuo Akahira | 2002-08-13 |
| 6414922 | OPTICAL RECORDING MEDIUM HAVING AN AREA FOR RECORDING A PLURALITY OF RECORDING/REPRODUCTION CONDITIONS TO BE USED IN RECORDING/REPRODUCTION APPARATUSES AND RECORDING/REPRODUCTION METHOD AND APPARATUS THEREFORE | Tetsuya Akiyama, Shigeaki Furukawa, Kenji Narumi, Hiroyuki Yamaguchi | 2002-07-02 |
| 6411592 | OPTICAL INFORMATION RECORDING MEDIUM HAVING CONVEX AND CONCAVE PORTIONS FOR RECORDING INFORMATION AND AN ADDITIONAL PORTION FOR CONDITION DATA, AND RECORDING AND REPRODUCING APPARATUS FOR USING THE MEDIUM | Naoyasu Miyagawa, Eiji Ohno, Nobuo Akahira | 2002-06-25 |
| 6411575 | OPTICAL RECORDING MEDIUM HAVING AN AREA FOR RECORDING A PLURALITY OF RECORDING/REPRODUCTION CONDITIONS TO BE USED IN RECORDING/REPRODUCTION APPARATUSES AND RECORDING/REPRODUCTION METHOD AND APPARATUS THEREFOR | Tetsuya Akiyama, Shigeaki Furukawa, Kenji Narumi, Hiroyuki Yamaguchi | 2002-06-25 |
| 6388984 | Optical information recording medium and its recording and reproducing method | Hideki Kitaura, Noboru Yamada, Ken'ichi Nagata, Shigeaki Furukawa | 2002-05-14 |
| 6345026 | Optical recording method and optical recorder | Shigeaki Furukawa, Yuuichi Kamioka, Norifumi Oda | 2002-02-05 |
| 6343062 | Optical disk device and optical disk for recording and reproducing high-density signals | Shigeaki Furukawa, Takashi Ishida | 2002-01-29 |