Issued Patents All Time
Showing 1–25 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9983531 | Moving-member detecting device and image forming apparatus | Koichi Kudo, Koji Masuda, Takeshi Ueda, Yasuhiro Nihei, Atsushi Takaura | 2018-05-29 |
| 9304228 | Object detection apparatus with detection based on reflected light or scattered light via an imaging unit | Tadashi Nakamura, Shigeaki Imai, Shuichi Suzuki, Mitsuru Nakajima, Kenichi Yoshimura | 2016-04-05 |
| 9188674 | Laser radar device | Shuichi Suzuki, Mitsuru Nakajima, Kenichi Yoshimura, Shigeaki Imai, Tadashi Nakamura | 2015-11-17 |
| 8587774 | Velocity detecting device and multi-color image forming apparatus | Shigeaki Imai, Koji Masuda, Hidemasa Suzuki | 2013-11-19 |
| 8373736 | Optical scanning device and image forming apparatus | Kazunori Bannai, Daisuke Imaki, Yoshinori Hayashi, Makoto Hirakawa | 2013-02-12 |
| 8045249 | Optical scanning device | Masanori Kobayashi, Kazuya Miyagaki | 2011-10-25 |
| 7242839 | Optical delay element | Atsushi Sakai, Ikuo Katoh, Toshihiko Baba | 2007-07-10 |
| 7177258 | Optical pickup apparatus, optical data recording/reproducing apparatus, and optical data recording/reproducing method | Shigeru Ohuchida | 2007-02-13 |
| 7164532 | Diffraction grating, light source unit applying the same therein, and optical head device employing the same | Junichi Kitabayashi, Shigeru Oohchida, Tsuyoshi Suzudo | 2007-01-16 |
| 6876621 | Optical apparatus for recording/reproducing and reading/reproducing data on an optical recording medium, and method for using same | Shigeru Ohuchida | 2005-04-05 |
| 6822771 | Optical pickup unit and optical disk drive for accurate and stable information recording and reproduction | Shigeru Oohchida | 2004-11-23 |
| 6754162 | Optical pickup method, optical pickup device, and optical information processing apparatus adapted with spherical aberration correction for sub-spot tracking control | Kazuhiro Fujita, Hiroshi Koide | 2004-06-22 |
| 6618344 | Optical pickup apparatus having improved holographic optical element and photodetector | — | 2003-09-09 |
| 6072579 | Optical pickup apparatus having improved holographic optical element and photodetector | — | 2000-06-06 |
| 5684779 | Optical head with forward and reflected light beams propagating through a dual diffraction grating device along a common path | Shigeru Ohuchida | 1997-11-04 |
| 5481636 | Wavelength conversion element | Hiroaki Fukuda, Shigeyoshi Misawa | 1996-01-02 |
| 5402154 | Optical recording system capable of changing the beam size | Takashi Shibaguchi | 1995-03-28 |
| 5355220 | Optical movement measuring method and apparatus using interference fringes generated by overlapping spots of diffracted lights of different orders of diffraction from a line source | Hiroshi Kobayashi, Haruhiko Machida, Jun Akedo, Tomoyuki Yamaguchi | 1994-10-11 |
| 5333231 | Wavelength conversion element | Hiroaki Fukuda, Shigeyoshi Misawa | 1994-07-26 |
| 5208800 | Mode splitter and magneto-optical signal detection device | Tami Isobe, Shigeyoshi Misawa, Kiyoshi Yokomori, Syunsuke Fujita, Magane Aoki +1 more | 1993-05-04 |
| 5195071 | Focus detecting optical head | Shigeyoshi Misawa | 1993-03-16 |
| 5175642 | Light source unit capable of changing size of light beam spot and optical scanning image recording apparatus using the same | — | 1992-12-29 |
| 5124835 | Optical scanning apparatus | Takashi Shibaguchi | 1992-06-23 |
| 5119452 | High efficiency prism coupling device and method for producing the same | Kiyoshi Yokomori, Yoshinobu Nakayama, Shigeyoshi Misawa, Tami Isobe, Syunsuke Fujita +1 more | 1992-06-02 |
| 5079415 | Apparatus for converting optical information into electrical information signal, information storage element and method for storing information in the information storage element | Yutaka Hayashi, Iwao Hamaguchi, Shunsuke Fujita | 1992-01-07 |