Issued Patents All Time
Showing 26–50 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7034980 | Optical element, optical head, optical recording reproducing apparatus and optical recording/ reproducing method | Hidenori Wada, Tetsuo Saimi, Daisuke Ogata, Hiroaki Yamamoto, Shin-ichi Kadowaki +1 more | 2006-04-25 |
| 7027378 | Optical disk device and information recording/reproducing method | Yoshiaki Komma, Hidenori Wada | 2006-04-11 |
| RE38943 | Compound objective lens for optical disks having different thicknesses | Yoshiaki Komma, Sadao Mizuno | 2006-01-24 |
| 6987615 | Diffractive optical element and optical head using the same | Teruhiro Shiono, Hidenori Wada | 2006-01-17 |
| 6987598 | Optical element, optical head, optical recording reproducing apparatus and optical recording/reproducing method | Hidenori Wada, Tetsuo Saimi, Daisuke Ogata, Hiroaki Yamamoto, Shin-ichi Kadowaki +1 more | 2006-01-17 |
| 6967916 | Optical head apparatus, optical information recording and reproducing apparatus, method for detecting aberration and method for adjusting optical head apparatus | Kousei Sano, Shin-ichi Kadowaki, Yoshiaki Komma, Katsuhiko Yasuda, Akihiro Yasuda | 2005-11-22 |
| 6954417 | Optical disk device and information recording/reproducing method | Yoshiaki Komma, Hidenori Wada | 2005-10-11 |
| 6882607 | Optical head device and method for processing information based on prescribed division areas | Kousei Sano, Shin-ichi Kadowaki, Hiroaki Yamamoto, Ken'ichi Kasazumi | 2005-04-19 |
| 6744707 | Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same | Kousei Sano, Shin-ichi Kadowaki, Hiroaki Yamamoto, Ken'ichi Kasazumi | 2004-06-01 |
| 6728192 | Tracking error signal detection system for optical recording medium | Shin-ichi Kadowaki, Shinichi Tanaka, Seiji Nishiwaki, Kousei Sano | 2004-04-27 |
| 6665257 | Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same | Kousei Sano, Shin-ichi Kadowaki, Hiroaki Yamamoto, Ken'ichi Kasazumi | 2003-12-16 |
| 6584059 | Information recording and reproducing apparatus | Tetsuo Saimi, Hidenori Wada, Teruhiro Shiono, Keiichi Matsuzaki | 2003-06-24 |
| 6549346 | Assembled lens, optical head and optical recordable player with them | Hidenori Wada, Keiichi Matsuzaki, Tetsuo Saimi, Kenichi Kasazumi, Masanari Mohri | 2003-04-15 |
| 6480454 | Optical element, optical head using the optical element, and optical recording and reproducing apparatus using the optical element | Hidenori Wada, Daisuke Ogata, Sadao Mizuno, Tetsuo Saimi | 2002-11-12 |
| 6418095 | Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same | Kousei Sano, Shin-ichi Kadowaki, Hiroaki Yamamoto, Ken'ichi Kasazumi | 2002-07-09 |
| 6418107 | Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same | Kousei Sano, Shin-ichi Kadowaki, Hiroaki Yamamoto, Ken'ichi Kasazumi | 2002-07-09 |
| 6400671 | Optical head device | Hideki Hayashi, Tatsuo Ito, Yoshiaki Komma, Hiroaki Yamamoto | 2002-06-04 |
| 6327231 | Optical head device with zero-cross point correction | Kousei Sano, Shin-ichi Kadowaki, Hiroaki Yamamoto, Ken'ichi Kasazumi | 2001-12-04 |
| 6314068 | Optical head device, inclination detection apparatus using the same, and optical information processing apparatus using the same | Kousei Sano, Shin-ichi Kadowaki, Hiroaki Yamamoto, Ken'ichi Kasazumi | 2001-11-06 |
| 6292441 | Optical head device, optical information apparatus, and method for detecting focus error signal | Hiroaki Yamamoto, Daisuke Ogata, Ken'ichi Kasazumi, Hidenori Wada, Sadao Mizuno | 2001-09-18 |
| 6278670 | Optical head apparatus | Hideki Hayashi, Tatsuo Ito, Yoshiaki Komma, Hiroaki Yamamoto | 2001-08-21 |
| 6111842 | Optical head | Hiroaki Yamamoto, Ken'ichi Kasazumi, Shin-ichi Kadowaki | 2000-08-29 |
| 6009054 | Information recording medium and tracking error signal detection apparatus and magnetic recording apparatus and method of adjusting the magnetic recording apparatus | Shin-ichi Kadowaki, Shinichi Tanaka, Seiji Nishiwaki, Kousei Sano | 1999-12-28 |
| 5892741 | Information recording medium and tracking error signal detection apparatus and magnetic recording apparatus and method of adjusting the magnetic recording apparatus | Shin-ichi Kadowaki, Shinichi Tanaka, Seiji Nishiwaki, Kousei Sano | 1999-04-06 |
| 5815293 | Compound objective lens having two focal points | Yoshiaki Komma, Sadao Mizuno | 1998-09-29 |