Issued Patents All Time
Showing 26–50 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7209415 | Optical pickup device and recording and/or reproducing device | Kenji Nagatomi, Seiji Kajiyama | 2007-04-24 |
| 6693856 | MAGNETO-OPTICAL DISK APPARATUS CAPABLE OF ACCURATE REPRODUCTION OF SIGNAL BY REMOVING MAGNETIC INFLUENCE BY MAGNET INCLUDED IN OPTICAL HEAD AND METHOD OF DETECTING INTENSITY OF MAGNETIC FIELD APPLIED BY MAGNET | Masaaki Shidochi, Kanichi KOYAMA, Mitsuhiko Maeda, Seiji Kajiyama, Seiichiro Takahashi | 2004-02-17 |
| 6618424 | Optical pickup device | Masato Yamada | 2003-09-09 |
| 6607375 | System of injection blow molding and injection molding device | Minoru Takada, Koichi Sato, Atsushi Sakurai, Yoichi Netsu | 2003-08-19 |
| 6574182 | Optical pickup compatible with a plurality of types of optical disks having different thicknesses | Masato Yamada, Seiji Kajiyama, Yasuyuki Kanou | 2003-06-03 |
| 6552990 | Optical head for two different disk thicknesses with a light beam diameter control device | Seiji Kajiyama, Masato Yamada, Yasuyuki Kanou, Shuichi Ichiura | 2003-04-22 |
| 6321028 | Optical disk recording/reproduction apparatus for recording/reproducing information to/from optical disk of different standards | Seiji Kajiyama, Yasuyuki Kanou, Shuichi Ichiura, Hitotoshi Kimura, Toshio Harada +1 more | 2001-11-20 |
| 6262966 | Recording medium and optical pickup device | — | 2001-07-17 |
| 6201777 | Apparatus for discriminating optical recording media of different thicknesses from each other and reproducing information therefrom | Seiji Kajiyama, Yasuyuki Kanou, Shuichi Ichiura, Koichi Tada, Masami Shimizu +1 more | 2001-03-13 |
| 6181668 | Optical pickup device and wavelength selective diffraction grating | Seiji Kajiyama, Yasuyuki Kanou, Masato Yamada, Shuichi Ichiura | 2001-01-30 |
| 6167019 | Optical Disc cd recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards | Seiji Kajiyama, Yasuyuki Kanou, Shuichi Ichiura | 2000-12-26 |
| 6160783 | Optical pick-up device | Yasuyuki Kanou, Seiji Kajiyama, Koichi Tada | 2000-12-12 |
| 6156258 | Injection blow molding machine, injection blow molding method and injection molding machine | Minoru Takada, Koichi Sato, Atsushi Sakurai, Yoichi Netsu | 2000-12-05 |
| 6137764 | Optical disc recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards | Seiji Kajiyama, Yasuyuki Kanou, Shuichi Ichiura | 2000-10-24 |
| 6122242 | Optical disc recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards | Seiji Kajiyama, Yasuyuki Kanou, Shuichi Ichiura | 2000-09-19 |
| 6080353 | Method of molding a heat-resistant container | — | 2000-06-27 |
| 6049518 | Optical disc recording/reproducing apparatus recording/reproducing information to/from optical discs according to different standards | Seiji Kajiyama, Yasuyuki Kanou, Shuichi Ichiura | 2000-04-11 |
| 6025866 | Superresolution optical pickup apparatus | Yasuyuki Kanou, Seiji Kajiyama, Koichi Tada, Katsutoshi Hibino, Shigeki Hori | 2000-02-15 |
| 6009072 | High density optical disc player | Hitoshi Terasaki, Shuichi Ichiura, 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 | Seiji Kajiyama, Yasuyuki Kanou, Shuichi Ichiura, Koichi Tada, Masami Shimizu +1 more | 1999-06-29 |
| 5896367 | High density optical disc and optical disc player | Hitoshi Terasaki, Shuichi Ichiura, Toshio Ito, Yasuyuki Kano, Yoshimoto Yamaguchi +2 more | 1999-04-20 |
| 5870371 | Optical pickup device which can be adapted to plurality of types of optical disks | Seiji Kajiyama | 1999-02-09 |
| 5856965 | Optical disc readout apparatus for different types of optical discs | Seiji Kajiyama, Yasuyuki Kanou | 1999-01-05 |
| 5838657 | High density optical disc and optical disc player | Hitoshi Terasaki, Shuichi Ichiura, Toshio Ito, Yasuyuki Kano, Yoshimoto Yamaguchi +2 more | 1998-11-17 |
| 5796683 | Magneto-optical recording device having a controllable polarizing filter | Satoshi Sumi, Kenji Tanase, Yoshihisa Suzuki, Atsushi Yamaguchi | 1998-08-18 |