Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7489468 | Method and apparatus for head positioning control in a disk drive | Yusuke Ohinata, Yuji Sakai, Masahide Yatsu | 2009-02-10 |
| 7057844 | Method and apparatus for head positioning control in a disk drive | Yuji Sakai | 2006-06-06 |
| 7035036 | Method and apparatus for writing servo data with perpendicular magnetic recording in a disk drive | Kazuhito Shimomura, Koji Yano | 2006-04-25 |
| 7019936 | Method and apparatus for head positioning control in perpendicular magnetic recording of disk drive | Kazuhito Shimomura, Koji Yano | 2006-03-28 |
| 7009792 | Method and apparatus for data reproducing in a disk drive | Yuji Sakai | 2006-03-07 |
| 6950259 | Disk drive with control of read and write gate signals for read and write operation | — | 2005-09-27 |
| 6762895 | Magnetic disk drive and position error signal generation method | — | 2004-07-13 |
| 6594102 | Apparatus and method for retracting the head on power down in a disk drive | Hiroyuki Kanda, Tatsuharu Kusumoto | 2003-07-15 |
| 6396652 | Apparatus and method for control head unloading on power down in a disk drive | Hidetoshi Kawachi | 2002-05-28 |
| 6046876 | Head signal device with noise immunity function, for use in a disk storage apparatus | Tomihisa Ogawa | 2000-04-04 |
| 5636088 | Head assembly controlling distortion due to temperature variation and disk apparatus using the head assembly | Kotaro Yamamoto, Norio Yoshikawa, Masahito Yamaguchi, Masaaki Habata, Toshiaki Hattori +1 more | 1997-06-03 |
| 5233481 | Magnetic recording and reproducing apparatus | Hiroshi Okamura | 1993-08-03 |
| 5038230 | Method of accurately executing read access and magnetic recording/reproducing apparatus therefor | Masahiro Kusunoki, Hiroshi Okamura, Yoshihisa Nakamori | 1991-08-06 |
| 4931889 | Method and apparatus depending on the selected power source for controlling the positioning of a recording/reproducing apparatus | — | 1990-06-05 |
| 4811126 | Recording/reproducing system for a magnetic recording medium including synchronization detecting circuit | Hiroshi Suzuki | 1989-03-07 |
| 4803571 | Floppy disc magnetic head apparatus compatible with both horizontal and perpendicular recording media | Toshiyuki Fujioka, Masahiro Kusunoki | 1989-02-07 |
| 4745275 | Sensor circuit | — | 1988-05-17 |
| 4709279 | Read/write amplifier power control device for a disk apparatus | Masaki Sano | 1987-11-24 |