Issued Patents All Time
Showing 51–75 of 79 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7170664 | Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method | Tetsuo Saimi, Daisuke Ogata, Seiji Nishino, Hiroaki Yamamoto, Shin-ichi Kadowaki +1 more | 2007-01-30 |
| 7164638 | Optical head and optical recording/reproducing device using it and aberration correction method | Yoshiaki Komma | 2007-01-16 |
| 7161890 | Optical head device and optical information device using this and computer optical disk player car navigation system optical disk recorder and optical disk server using this optical information device | Yoshiaki Komma | 2007-01-09 |
| 7158450 | Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method | Tetsuo Saimi, Daisuke Ogata, Seiji Nishino, Hiroaki Yamamoto, Shin-ichi Kadowaki +1 more | 2007-01-02 |
| 7113472 | Optical head including an active polymer film for switching voltage during recording and reproducing processes | Seiji Nishino, Shin-ichi Kadowaki, Hiroaki Yamamoto, Daisuke Ogata | 2006-09-26 |
| 7110342 | Optical head device and optical information apparatus using the same | Seiji Nishino, Yoshiaki Komma, Sadao Mizuno, Keiichi Matsuzaki | 2006-09-19 |
| 7085203 | Optical head with defocusing correction and spherical aberration correction | Teruhiro Shiono, Keiichi Matsuzaki, Seiji Nishino | 2006-08-01 |
| 7079456 | Optical recording head capable of correcting spherical aberration | Yasuhiro Tanaka, Hideki Hayashi, Sadao Mizuno | 2006-07-18 |
| 7075878 | Optical disk device and information recording/reproducing method | Yoshiaki Komma, Seiji Nishino | 2006-07-11 |
| 7034980 | Optical element, optical head, optical recording reproducing apparatus and optical recording/ reproducing method | Tetsuo Saimi, Daisuke Ogata, Seiji Nishino, Hiroaki Yamamoto, Shin-ichi Kadowaki +1 more | 2006-04-25 |
| 7035192 | Optical pickup, optical information recording/reproducing apparatus using the same, and phase variable wave plate used in the pickup and the apparatus | Yasuo Kitaoka, Ken'ichi Kasazumi, Katsuhiko Kumagawa, Kazuhisa Yamamoto | 2006-04-25 |
| 7031247 | Liquid crystal driver and optical head for tilt correction | Katsuhiko Yasuda, Daisuke Ogata, Kanji Wakabayashi, Naoya Hotta | 2006-04-18 |
| 7027378 | Optical disk device and information recording/reproducing method | Yoshiaki Komma, Seiji Nishino | 2006-04-11 |
| 6987615 | Diffractive optical element and optical head using the same | Teruhiro Shiono, Seiji Nishino | 2006-01-17 |
| 6987598 | Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method | Tetsuo Saimi, Daisuke Ogata, Seiji Nishino, Hiroaki Yamamoto, Shin-ichi Kadowaki +1 more | 2006-01-17 |
| 6954417 | Optical disk device and information recording/reproducing method | Yoshiaki Komma, Seiji Nishino | 2005-10-11 |
| 6819646 | Optical pickup, optical information recording/reproducing apparatus using the same, and phase variable wave plate used in the pickup and the apparatus | Yasuo Kitaoka, Ken'ichi Kasazumi, Katsuhiko Kumagawa, Kazuhisa Yamamoto | 2004-11-16 |
| 6661415 | Liquid crystal driver and optical head for tilt correction | Katsuhiko Yasuda, Daisuke Ogata, Kanji Wakabayashi, Naoya Hotta, Yoshihiro Ikawa +2 more | 2003-12-09 |
| 6584059 | Information recording and reproducing apparatus | Tetsuo Saimi, Seiji Nishino, Teruhiro Shiono, Keiichi Matsuzaki | 2003-06-24 |
| 6549346 | Assembled lens, optical head and optical recordable player with them | Keiichi Matsuzaki, Seiji Nishino, Tetsuo Saimi, Kenichi Kasazumi, Masanari Mohri | 2003-04-15 |
| 6532202 | Optical element, optical head and optical recording reproducing apparatus | Shin-ichi Kadowaki, Hiroaki Yamamoto, Tetsuo Saimi, Daisuke Ogata, Naoya Hotta +1 more | 2003-03-11 |
| 6480454 | Optical element, optical head using the optical element, and optical recording and reproducing apparatus using the optical element | Daisuke Ogata, Sadao Mizuno, Seiji Nishino, Tetsuo Saimi | 2002-11-12 |
| 6292441 | Optical head device, optical information apparatus, and method for detecting focus error signal | Hiroaki Yamamoto, Daisuke Ogata, Ken'ichi Kasazumi, Seiji Nishino, Sadao Mizuno | 2001-09-18 |
| 5757754 | Holographic optical head | Hiroaki Yamamoto, Tetsuo Saimi, Seiji Nishino, Yoshiaki Komma | 1998-05-26 |
| 5748599 | Holographic optical device | Hiroaki Yamamoto, Tetsuo Saimi, Seiji Nishino, Yoshiaki Komma | 1998-05-05 |