Issued Patents All Time
Showing 1–25 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8526293 | Information recording medium and recording/reproducing method for the same | Rie Kojima, Kenji Narumi, Noboru Yamada | 2013-09-03 |
| 8451699 | Optical information reproduction device, optical information recording device, optical information reproduction method, and optical information recording method | Kenji Narumi | 2013-05-28 |
| 8422341 | Device and method for recording and/or reproducing data onto/from information recording medium by using near-field light and information recording medium | Kenji Narumi | 2013-04-16 |
| 8385161 | Optical information reproducing device, optical information reproducing method and integrated circuit | Kenji Narumi | 2013-02-26 |
| 8279721 | Near-field recording head capable of directly forming light source in slider | Hideki Aikoh | 2012-10-02 |
| 8259541 | Optical recording/reproduction method, optical recording/reproduction device, program, and optical recording medium | Eiichi Ito | 2012-09-04 |
| 8233372 | Optical system for compensating for coma aberration and/or spherical aberration in an optical pickup device and optical pickup device having the same | Yasuhiro Tanaka, Michihiro Yamagata, Katsuhiko Hayashi | 2012-07-31 |
| 8179768 | Optical system for compensating for spherical aberration and/or coma aberration in an optical pickup device and optical pickup device having the same | Yasuhiro Tanaka, Michihiro Yamagata, Katsuhiko Hayashi | 2012-05-15 |
| 8130625 | Optical information recorder/reproducer, optical information recording/reproducing method and control circuit | Kenji Narumi | 2012-03-06 |
| 8130623 | Optical information recording and/or reproducing apparatus, optical information recording and/or reproducing method, optical information recording medium, and solid immersion lens | Kenji Narumi, Rie Kojima, Eiichi Ito | 2012-03-06 |
| 8050150 | Near-field light detection element and information reproducing medium reproducing method | Takashi Mihara | 2011-11-01 |
| 8040774 | Optical disk device and tilt correction method for optical disk device | Ryutaro Futakuchi | 2011-10-18 |
| 7957232 | Gap controller and optical information processor | Ryutaro Futakuchi | 2011-06-07 |
| 7948835 | Optical disc device, method for activating optical disc device, and control circuit | Ryutaro Futakuchi | 2011-05-24 |
| 7944799 | Optical information apparatus with gap control system | Ryutaro Futakuchi | 2011-05-17 |
| 7773343 | Magnetic recording medium, and manufacturing method, manufacturing apparatus, recording and reproduction method, and recording and reproduction apparatus for the same | Motoyoshi Murakami | 2010-08-10 |
| 7420889 | Optical disc tracking control device, tracking control method, and tracking control program | Kenzo Ishibashi, Eiji Ueda | 2008-09-02 |
| 7235313 | Magneto-optical recording medium, method of manufacturing magneto-optical recording medium, method of recording on magneto-optical recording medium, and method of reproduction from magneto-optical recording medium | Motoyoshi Murakami | 2007-06-26 |
| 7180831 | Magneto-optical recording medium having a recording layer of columnar structure | Motoyoshi Murakami, Takeshi Sakaguchi | 2007-02-20 |
| 7180842 | Optical disc cutting apparatus and method for manufacturing optical disc | Kenzo Ishibashi, Keiji Nishikiori, Yasumori Hino | 2007-02-20 |
| 7126886 | Magneto-optical recording medium and method for producing the same | Motoyoshi Murakami, Tsutomu Shiratori, Yasuyuki Miyaoka | 2006-10-24 |
| 6982932 | Recording/reproducing head and recording/reproducing apparatus incorporating the same | Hiroshi Sakakima, Kazuo Yokoyama, Masayoshi Hiramoto | 2006-01-03 |
| 6811889 | Magneto-optical recording medium having a GDFECO readout magnetic film | Yoshihiko Kudoh, Yasumori Hino, Yuuichi Fukamachi | 2004-11-02 |
| 6765847 | Optical disk and method of magnetically separating tracks of the optical disk | Yasumori Hino, Yasushi Hozumi, Tomoyuki Hiroki | 2004-07-20 |
| 6747919 | Magneto-optical recording medium, and method and apparatus for producing the same | Yuuko Kawaguchi, Motoyoshi Murakami, Tsutomu Shiratori, Yasuyuki Miyaoka | 2004-06-08 |