Issued Patents All Time
Showing 26–50 of 144 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7142496 | Optical information recording method, device, and recording medium with plural recording layers | Naoyasu Miyagawa | 2006-11-28 |
| 7136349 | Multi-layer optical information recording medium with pits or grooves | Ken'ichi Nagata, Nobuo Akahira | 2006-11-14 |
| 7136348 | Optical recording medium and recording method for the same | Hiroaki Irie, Keiichiro Horai, Mitsuaki Oshima | 2006-11-14 |
| 7133428 | Optical apparatus and method for producing the same | Yasuo Kitaoka, Kazuhisa Yamamoto, Makoto Kato, Kiminori Mizuuchi | 2006-11-07 |
| 7123570 | Recording/reproducing apparatus with optical path correction system | Tetsuya Akiyama, Nobuo Akahira | 2006-10-17 |
| 7116631 | Optical information recording medium manfacturing method therefor, manufacturing apparatus therefor, and optical information recording and reproducing apparatus | Ken'ichi Nagata, Nobuo Akahira | 2006-10-03 |
| 7116623 | Optical information recording method, optical information recording device and optical information recording medium | Kenji Narumi, Naoyasu Miyagawa | 2006-10-03 |
| 7106686 | Optical information recording medium, method of manufacturing thereof, and method of recording and reproduction | Ken'ichi Nagata | 2006-09-12 |
| 7095705 | Optical information recording medium and optical information recording and reproducing apparatus | Naoyasu Miyagawa, Eiji Ohno, Nobuo Akahira | 2006-08-22 |
| 7088668 | Optical recording medium with address information composed of pits | Tetsuya Akiyama, Shigeaki Furukawa, Tomoyoshi Miyake, Masahiko Tsukuda | 2006-08-08 |
| 7088656 | Method for optically recording information and device for optically recording information by the same | Kenji Narumi, Tetsuya Akiyama, Shigeaki Furukawa | 2006-08-08 |
| 7075870 | Recording/reproducing apparatus for optical information recording medium and optical head | Tetsuya Akiyama, Nobuo Akahira | 2006-07-11 |
| 7061850 | Optical recording medium and recording method for the same | Hiroaki Irie, Keiichiro Horai, Yoshihisa Fukushima, Mitsuaki Oshima | 2006-06-13 |
| 7020065 | Optical information recording medium, and method and apparatus for recording/reproducing information thereon | Tetsuya Akiyama, Kenji Narumi | 2006-03-28 |
| 6975579 | Optical information recording medium and optical information recording and reproducing apparatus | Naoyasu Miyagawa, Eiji Ohno, Nobuo Akahira | 2005-12-13 |
| 6975571 | Method for optically recording information and device for optically recording information by the same | Kenji Narumi, Tetsuya Akiyama, Shigeaki Furukawa | 2005-12-13 |
| 6967911 | Multivalued information recording method, multivalued information recording apparatus, and recording medium | Hiromichi Ishibashi, Takeo Ohta | 2005-11-22 |
| 6952382 | Recording/reproduction apparatus, recording/reproduction method and information recording medium | — | 2005-10-04 |
| 6934243 | Optical information recording medium, recording/reproducing apparatus and recording /reproducing method for the same, and method for manufacturing optical information recording medium | Tetsuya Akiyama | 2005-08-23 |
| 6922387 | Optical information recording medium, and method and apparatus for recording/reproducing information thereon | Tetsuya Akiyama, Kenji Narumi | 2005-07-26 |
| 6906988 | Method and apparatus for recording/reproducing information with respect to optical recording medium | Shigeaki Furukawa, Tetsuya Akiyama, Kenji Narumi, Takashi Ishida, Mamoru Shoji +2 more | 2005-06-14 |
| 6893698 | Optical information recording medium, optical measuring method and optical information recording/reproducing method | Kenji Narumi, Naoyasu Miyagawa, Rie Kojima, Takashi Nishihara, Noboru Yamada | 2005-05-17 |
| 6894962 | Optical information recording medium with sector address information | Ken'ichi Nagata | 2005-05-17 |
| 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 |