Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7242656 | Disk system and power-on sequence for the same | Yoshihisa Kamo, Hitoshi Kakuta, Atsushi Tanaka | 2007-07-10 |
| 6898047 | Magnetic disk drive for compensating repeatable runout error | Kazuhisa Shishida, Takahiro Inoue, Makoto Horisaki, Youichi Kusagaya | 2005-05-24 |
| 6625690 | Disk system and power-on sequence for the same | Yoshihisa Kamo, Hitoshi Kakuta, Atsushi Tanaka | 2003-09-23 |
| 6590729 | Magnetic disk drive with servo signal decoder using amplitude detection and phase detection system | Kyo Akagi | 2003-07-08 |
| 6286108 | Disk system and power-on sequence for the same | Yoshihisa Kamo, Hitoshi Kakuta, Atsushi Tanaka | 2001-09-04 |
| 6131142 | Disk system and power-on sequence for the same | Yoshihisa Kamo, Hitoshi Kakuta, Atsushi Tanaka | 2000-10-10 |
| 6012124 | Disk system with activation control of disk drive motors | Yoshihisa Kamo, Hitoshi Kakuta, Atsushi Tanaka | 2000-01-04 |
| 5748398 | Method for writing servo signals onto a magnetic disk and magnetic disk drive equipped with magnetic disk(s) having servo pattern recorded by the method | — | 1998-05-05 |
| 5673412 | Disk system and power-on sequence for the same | Yoshihisa Kamo, Hitoshi Kakuta, Atsushi Tanaka | 1997-09-30 |
| 5572699 | Variable length data in a parallel disk array | Yoshihisa Kamo, Hajime Aoi, Hitoshi Kakuta, Yoshito Tsunoda, Hiromichi Fujisawa +1 more | 1996-11-05 |
| 5568331 | Method of head positioning and magnetic recording disk drive using the same | Kyo Akagi, Masaaki Futamoto, Fumio Kugiya, Yoshinori Miyamura, Hisashi Takano +8 more | 1996-10-22 |
| 5548454 | Information recording disk, its production method and recording apparatus | Youichi Kawakubo, Yoshio Kawamura | 1996-08-20 |
| 5325364 | Method for error correction and circuit for realizing same | Yasuhide Ouchi, Hajime Aoi, Yoshihisa Kamo, Hitoshi Kakuta | 1994-06-28 |
| 5193034 | Magnetic disk apparatus of constant-density recording type, magnetic disk used therefor and servo-writing device for patterning on the magnetic disk | Toshiaki Tsuyoshi, Hajime Aoi, Makoto Saito | 1993-03-09 |
| 5132854 | High speed seek sector servo magnetic disk drive unit | Toshiaki Tsuyoshi, Hajime Aoi | 1992-07-21 |
| 4851939 | Actuator driving apparatus and magnetic disk drive system with a smaller number of high power amplifiers than actuators | Yoshiyuki Hirano, Hajime Aoi, Takashi Tamura, Kazuyoshi Nakabayashi | 1989-07-25 |
| 4707755 | Optical read-out magnetic head | Norio Ohta, Shigenori Okamine, Yutaka Sugita, Takashi Tamura | 1987-11-17 |
| 4651242 | Magnetic disk apparatus | Yoshiyuki Hirano, Toyoji Okuwaki, Katsuhiko Kato, Takashi Tamura | 1987-03-17 |