Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9689688 | Image display system, image display method and program | Kazuhiro Sasao, Masaru Yokoyama, Arata Sakurai | 2017-06-27 |
| 9030494 | Information processing apparatus, information processing method, and program | Noboru Ihara, Kazuhiro Sasao, Masaru Yokoyama, Arata Sakurai | 2015-05-12 |
| 9001152 | Information processing apparatus, information processing method, and program | Noboru Ihara, Kazuhiro Sasao, Masaru Yokoyama, Arata Sakurai | 2015-04-07 |
| 5909423 | Photo-detection device used in an optical pickup head for detecting focusing error signal | Kenji Fukui | 1999-06-01 |
| 5715219 | Displacement detecting device for optical head | Tadashi Takeda, Kenji Fukui, Hiroyuki Wada | 1998-02-03 |
| 5502693 | Magnetic recording system for compensating leakage flux | Kouichi Matsumoto, Isao Kotani, Satoshi Kuroda, Hiroyuki Ishikawa, Kenji Fukui | 1996-03-26 |
| 5351230 | Optical information system focal point displacement detecting means having Fresnel zone plates with rectilinear grating | Tadashi Takeda, Hiroyuki Wada, Kenji Fukui, Shohei Hashiguchi | 1994-09-27 |