Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9207252 | Speed detection apparatus and driving mechanism control apparatus | Shuhei Hamada, Hisatoshi Baba, Takashi Fukuhara | 2015-12-08 |
| 9116163 | Displacement measuring apparatus | Yasumichi Arimitsu | 2015-08-25 |
| 8805022 | Velocity detection apparatus having two detectors | Yasumichi Arimitsu, Masahiko Igaki | 2014-08-12 |
| 8527236 | Displacement detection apparatus and method of correcting error of scale used for displacement detection apparatus | Shinichiro Takahama, Masahiko Igaki, Yasumichi Arimitsu | 2013-09-03 |
| 7782722 | Method of adjusting spherical aberration and focus offset and information recording/reproduction apparatus using the same | — | 2010-08-24 |
| 7573798 | Multi-level information reproducing method | Masakuni Yamamoto | 2009-08-11 |
| 7466638 | Optical disk recording power adjustment method and optical disk apparatus adapted to operate with the same | — | 2008-12-16 |
| 7289408 | Method and apparatus for reproducing recording mark below diffraction limit of light from optical recording medium | — | 2007-10-30 |
| 7165263 | Method for annealing domain wall displacement type magneto-optical disc and magneto-optical disc | — | 2007-01-16 |
| 7136328 | Magneto-optical recording device capable of setting the time phase of laser pulses and magnetic fields | — | 2006-11-14 |
| 7126886 | Magneto-optical recording medium and method for producing the same | Motoyoshi Murakami, Masahiro Birukawa, Tsutomu Shiratori | 2006-10-24 |
| 6980490 | Optical disk and manufacturing method for the same | Kenzo Ishibashi, Yasumori Hino, Hirotake Ando | 2005-12-27 |
| 6747919 | Magneto-optical recording medium, and method and apparatus for producing the same | Yuuko Kawaguchi, Motoyoshi Murakami, Masahiro Birukawa, Tsutomu Shiratori | 2004-06-08 |
| 6716489 | Method for annealing domain wall displacement type magneto-optical recording medium | — | 2004-04-06 |
| 6646968 | Magneto-optical recording apparatus and method including method for presetting optimum recording power of recording apparatus | — | 2003-11-11 |
| 6343052 | Magneto-optical medium having film with rounded upper corner and thickness decreasing to the side end on lands | Morimi Hashimoto | 2002-01-29 |
| 6314061 | Linear high density magneto-optical recording apparatus | — | 2001-11-06 |
| 6249489 | Information recording-reproducing method utilizing domain wall displacement, and magneto optical medium | Eiichi Fujii, Masakuni Yamamoto, Tsutomu Shiratori | 2001-06-19 |
| 6249490 | Magneto-optical recording/reproducing method and apparatus | — | 2001-06-19 |
| 6246641 | Magneto-optical recording-reproducing method and apparatus utilizing domain wall displacement | — | 2001-06-12 |
| 6069852 | Magneto-optical recording-reproducing method for recording an asymmetrical magnetic domain on a magneto-optical recording medium | Hiroshi Yoshida | 2000-05-30 |
| 6058077 | Signal reproducing method and apparatus for reproducing information by moving magnetic wall | — | 2000-05-02 |
| 5953289 | Magneto-optical recording-reproducing method utilizing domain wall displacement, and apparatus therefor | — | 1999-09-14 |
| 5398227 | Magnetooptical recording reproducing apparatus and method for determining the power of an irradiating light beam on the basis of a detected amplitude of a recording signal | Koyo Hasegawa | 1995-03-14 |
| 5233578 | Method of recording information on a recording medium having at least two magnetic layers | Masakuni Yamamoto, Koyo Hasegawa, Yutaka Ogasawara, Makoto Hiramatsu, Susumu Matsumura | 1993-08-03 |