Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6335908 | Magneto optical recording medium with mask layer | Morio Nakatani | 2002-01-01 |
| 6327232 | Information recording and reproduction apparatus carrying out recording and reproduction of information using laser beam | Atsushi Yamaguchi, Kenji Nakao, Hisashi Matsuyama, Yoshihiro Hori, Satoshi Sumi | 2001-12-04 |
| 6324137 | Information recording and reproduction apparatus carrying out recording and reproduction of information using laser beam | Atsushi Yamaguchi, Kenji Nakao, Hisashi Matsuyama, Yoshihiro Hori, Satoshi Sumi | 2001-11-27 |
| 6314070 | Information recording and reproduction apparatus carrying out recording and reproduction of information using laser beam | Atsushi Yamaguchi, Kenji Nakao, Hisashi Matsuyama, Yoshihiro Hori, Satoshi Sumi | 2001-11-06 |
| 6243326 | Recording and reproduction device for a magneto-optic recording medium capable of recording information according to optical super-resolution | Satoshi Sumi, Yoshihisa Suzuki, Atsushi Yamaguchi, Yoshiharu Uchihara, Kenji Torazawa +1 more | 2001-06-05 |
| 6240056 | Information recording and reproduction apparatus using a pulsed laser light | Atsushi Yamaguchi, Kenji Nakao, Hisashi Matsuyama, Yoshihiro Hori, Satoshi Sumi | 2001-05-29 |
| 6205092 | Magneto-optical recording and reproducing apparatus and method | Atsushi Yamaguchi, Satoshi Sumi, Yoshihisa Suzuki | 2001-03-20 |
| 5968678 | Magneto-optical recording medium and manufacturing method thereof | Atsushi Yamaguchi, Yoshihisa Suzuki, Satoshi Sumi, Yoshiharu Uchihara, Seiji Murata +1 more | 1999-10-19 |
| 5796683 | Magneto-optical recording device having a controllable polarizing filter | Satoshi Sumi, Yoshihisa Suzuki, Atsushi Yamaguchi, Yoichi Tsuchiya | 1998-08-18 |
| 5771211 | Magneto-optical recording media having a reading layer with a specified range of temperature coefficients of a kerr rotation angle | Yoshihisa Suzuki, Atsushi Yamaguchi | 1998-06-23 |