Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8750083 | Optical pickup apparatus and disc apparatus including the same | Minoru Sato, Kiyotaka Eizumi | 2014-06-10 |
| 7605909 | Detection device for detecting conditions at a target position | Atsushi Yamaguchi, Yoshihisa Suzuki, Masato Yamada | 2009-10-20 |
| 7570346 | Detection device | Atsushi Yamaguchi, Shinji Kobayashi, Masato Yamada | 2009-08-04 |
| 7566861 | Detection device controlled by driving speed and driving direction | Masato Yamada | 2009-07-28 |
| 7351944 | Beam irradiation device | Masato Yamada, Hitoshi Terasaki, Yoichi Tsuchiya, Masahiro Higuchi, Mikio Ichihashi +2 more | 2008-04-01 |
| 6552990 | Optical head for two different disk thicknesses with a light beam diameter control device | Seiji Kajiyama, Yoichi Tsuchiya, Masato Yamada, Yasuyuki Kanou | 2003-04-22 |
| 6480444 | Optical disk device | Koichi Tada, Shinichi Ohe, Naoyuki Takagi, Ken Hirose, Hiroshi Watanabe | 2002-11-12 |
| 6477122 | Optical disk device | Koichi Tada, Shinichi Ohe, Naoyuki Takagi, Ken Hirose, Hiroshi Watanabe | 2002-11-05 |
| 6466527 | Optical disk device | Koichi Tada, Shinichi Ohe, Naoyuki Takagi, Ken Hirose, Hiroshi Watanabe | 2002-10-15 |
| 6459662 | Optical disk device | Koichi Tada, Shinichi Ohe, Naoyuki Takagi, Ken Hirose, Hiroshi Watanabe | 2002-10-01 |
| 6370093 | Optical disc device | Koichi Tada, Shinichi Ohe, Naoyuki Takagi, Ken Hirose, Hiroshi Watanabe | 2002-04-09 |
| 6321028 | Optical disk recording/reproduction apparatus for recording/reproducing information to/from optical disk of different standards | Seiji Kajiyama, Yoichi Tsuchiya, Yasuyuki Kanou, Hitotoshi Kimura, Toshio Harada +1 more | 2001-11-20 |
| 6243354 | Optical disk having high recording density | Hitoshi Terasaki | 2001-06-05 |
| 6201777 | Apparatus for discriminating optical recording media of different thicknesses from each other and reproducing information therefrom | Yoichi Tsuchiya, Seiji Kajiyama, Yasuyuki Kanou, Koichi Tada, Masami Shimizu +1 more | 2001-03-13 |
| 6181668 | Optical pickup device and wavelength selective diffraction grating | Seiji Kajiyama, Yasuyuki Kanou, Masato Yamada, Yoichi Tsuchiya | 2001-01-30 |
| 6167019 | Optical Disc cd recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards | Yoichi Tsuchiya, Seiji Kajiyama, Yasuyuki Kanou | 2000-12-26 |
| 6137764 | Optical disc recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards | Yoichi Tsuchiya, Seiji Kajiyama, Yasuyuki Kanou | 2000-10-24 |
| 6122242 | Optical disc recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards | Yoichi Tsuchiya, Seiji Kajiyama, Yasuyuki Kanou | 2000-09-19 |
| 6049518 | Optical disc recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards | Yoichi Tsuchiya, Seiji Kajiyama, Yasuyuki Kanou | 2000-04-11 |
| 6009072 | High density optical disc player | Yoichi Tsuchiya, Hitoshi Terasaki, Toshio Ito, Yasuyuki Kano, Yoshimoto Yamaguchi +2 more | 1999-12-28 |
| 5917791 | Apparatus for discriminating optical recording media of different thicknesses from each other and reproducing information therefrom | Yoichi Tsuchiya, Seiji Kajiyama, Yasuyuki Kanou, Koichi Tada, Masami Shimizu +1 more | 1999-06-29 |
| 5896367 | High density optical disc and optical disc player | Yoichi Tsuchiya, Hitoshi Terasaki, Toshio Ito, Yasuyuki Kano, Yoshimoto Yamaguchi +2 more | 1999-04-20 |
| 5838657 | High density optical disc and optical disc player | Yoichi Tsuchiya, Hitoshi Terasaki, Toshio Ito, Yasuyuki Kano, Yoshimoto Yamaguchi +2 more | 1998-11-17 |
| 5787061 | Optical disc recording reproducing apparatus recording/reproducing information to/from optical discs according to different standards | Yoichi Tsuchiya, Seiji Kajiyama, Yasuyuki Kanou | 1998-07-28 |
| 5777970 | Optical disk readout apparatus | Seiji Kajiyama, Yoichi Tsuchiya, Tateo Toyama, Katsutoshi Hibino | 1998-07-07 |