Issued Patents All Time
Showing 76–100 of 113 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7012857 | Magneto optical recording medium having a multilayer recording film of different thickness | Motoyoshi Murakami, Yuko Kawaguchi | 2006-03-14 |
| 7002883 | Disk-shaped storage medium and tracking method using the same | Tadashi Nakamura, Norio Miyatake | 2006-02-21 |
| 6999398 | Method and apparatus for recording information on information recording medium | Masakuni Yamamoto, Yasushi Hozumi | 2006-02-14 |
| 6980490 | Optical disk and manufacturing method for the same | Kenzo Ishibashi, Yasuyuki Miyaoka, Hirotake Ando | 2005-12-27 |
| 6975564 | Magneto-optical recording medium for use in domain wall displacement detection system, and method for producing the same | Kiyoshi Uchida, Motoyoshi Murakami, Norio Miyatake | 2005-12-13 |
| 6968496 | Optical disk with error detection code and optical disk apparatus | Toshio Matsumoto | 2005-11-22 |
| 6965545 | Optical recording medium with prepit regions and recording/reproducing method thereof | Masayoshi Shioya, Kazumasa Hirano, Shohei Yumita | 2005-11-15 |
| 6887652 | High density optical disk, apparatus for reproducing optical disk and method for producing optical disk master | Norio Miyatake, Tadashi Nakamura | 2005-05-03 |
| 6873789 | AV data recording apparatus and method, and disk recorded by the same | Tadashi Nakamura, Masanori Itoh, Masafumi Shimotashiro | 2005-03-29 |
| 6836457 | Information reproducing method and information reproducing device | Tadashi Nakamura, Norio Miyatake | 2004-12-28 |
| 6811889 | Magneto-optical recording medium having a GDFECO readout magnetic film | Yoshihiko Kudoh, Yuuichi Fukamachi, Masahiro Birukawa | 2004-11-02 |
| 6791908 | Magneto-optical recording medium having a transfer control layer | Motoyoshi Murakami, Takeshi Sakaguchi | 2004-09-14 |
| 6767697 | Magneto-optical disk and method for producing same by initializing with a laser having a predetermined wavelength | Kiyoshi Uchida, Motoyoshi Murakami, Norio Miyatake | 2004-07-27 |
| 6765847 | Optical disk and method of magnetically separating tracks of the optical disk | Masahiro Birukawa, Yasushi Hozumi, Tomoyuki Hiroki | 2004-07-20 |
| 6704258 | Tracking error signal detector | Eiji Ueda, Takashi Inoue, Hideki Ohyama, Kiyokazu Hashimoto | 2004-03-09 |
| 6628578 | Disklike storage medium and tracking method using the same | Tadashi Nakamura, Norio Miyatake | 2003-09-30 |
| 6587407 | Information reproducing method and information reproducing device | Tadashi Nakamura, Norio Miyatake | 2003-07-01 |
| 6521357 | Magneto-optical recording medium | Yoshihiko Kudoh, Yuuichi Fukamachi, Masahiro Birukawa | 2003-02-18 |
| 6504803 | Optical disk apparatus | Toshio Matsumoto, Takashi Inoue | 2003-01-07 |
| 6504797 | Magneto-optical recording medium having multiple magnetic layers and reproducing method thereof | Motoyoshi Murakami, Takeshi Sakaguchi | 2003-01-07 |
| 6399227 | Magneto-optical recording medium | Yoshihiko Kudoh, Yuuichi Fukamachi, Masahiro Birukawa | 2002-06-04 |
| 6307819 | Method of reading magneto-optical recording medium | Masahiro Birukawa, Norio Miyatake | 2001-10-23 |
| 6269056 | Recording method for a magneto-optical recording medium for position adjustment of a magnetic head | Masahiro Birukawa, Norio Miyatake | 2001-07-31 |
| 6252845 | High density optical disk, apparatus for reproducing optical disk and method for producing optical disk master | Norio Miyatake, Tadashi Nakamura | 2001-06-26 |
| 6222797 | Position adjustment method of a magnetic head using magneto-optical recording medium, and optical recording medium | Masahiro Birukawa, Norio Miyatake | 2001-04-24 |