Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8691402 | Perpendicular magnetic recording medium | Osamu Kitakami, Yutaka Shimada, Satoshi Okamoto, Takehito Shimatsu, Hiroaki Muraoka +3 more | 2014-04-08 |
| 8323808 | Perpendicular magnetic recording medium | Osamu Kitakami, Yutaka Shimada, Satoshi Okamoto, Takehito Shimatsu, Hiroaki Muraoka +3 more | 2012-12-04 |
| 8076012 | Magnetic thin film and method for forming the film, and magnetic thin film-applied device | Takehito Shimatsu, Hideo Sato, Osamu Kitakami, Satoshi Okamoto, Hiroyasu Kataoka | 2011-12-13 |
| 7993762 | Magnetic thin film and method of manufacturing the same, and various application devices using the same | Takehito Shimatsu, Hideo Sato, Osamu Kitakami, Satoshi Okamoto, Hiroyasu Kataoka | 2011-08-09 |
| 6243824 | Array disk subsystem | Hitoshi Kakuta, Yoshihisa Kamo | 2001-06-05 |
| 6069762 | Magnetic recording drive having arrangement for averaging useful life of magnetoresistive effect sensors | Toshiaki Tsuyoshi, Makoto Koizumi, Nobumasa Nishiyama, Yoshibumi Matsuda, Takuji Ogawa +1 more | 2000-05-30 |
| 6014275 | Magnetic recording drive | Toshiaki Tsuyoshi, Makoto Koizumi, Nobumasa Nishiyama, Yoshibumi Matsuda, Takuji Ogawa +1 more | 2000-01-11 |
| 5740142 | Method and apparatus for fast transfer of data in recording and reproducing system | Nobumasa Nishiyama | 1998-04-14 |
| 5689494 | Surface atom fabrication method and apparatus | Masakazu Ichikawa, Shigeyuki Hosoki, Fumihiko Uchida, Shigeo Kato, Yoshihisa Fujisaki +5 more | 1997-11-18 |
| 5671107 | Large capacity magnetic disc apparatus with a particular relationship between pole thickness, saturated flux density, and recording wavelength | Katsuya Mitsuoka, Hiroshi Fukui, Makoto Aihara, Masanori Tanabe, Moriaki Fuyama +8 more | 1997-09-23 |
| 5572379 | Magnetic recording drive having arrangements for average useful life of magnetorestive effects sensors | Toshiaki Tsuyoshi, Makoto Koizumi, Nobumasa Nishiyama, Yoshibumi Matsuda, Takuji Ogawa +1 more | 1996-11-05 |
| 5572699 | Variable length data in a parallel disk array | Yoshihisa Kamo, Hitoshi Kakuta, Yoshito Tsunoda, Hiromichi Fujisawa, Yosuke Seo +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 |
| 5416331 | Surface atom fabrication method and apparatus | Masakazu Ichikawa, Shigeyuki Hosoki, Fumihiko Uchida, Shigeo Kato, Yoshihisa Fujisaki +5 more | 1995-05-16 |
| 5402428 | Array disk subsystem | Hitoshi Kakuta, Yoshihisa Kamo | 1995-03-28 |
| 5337198 | Digital magnetic writing and reading apparatus | Nobumasa Nishiyama, Toshiaki Tsuyoshi, Tetsuji Kameoka, Masaya Tanaka, Kazuhisa Shiraishi | 1994-08-09 |
| 5325364 | Method for error correction and circuit for realizing same | Yasuhide Ouchi, Yoshihisa Kamo, Yosuke Seo, Hitoshi Kakuta | 1994-06-28 |
| 5287228 | Peak detection method and apparatus therefor | Hideki Sawaguchi, Yasuhide Ouchi | 1994-02-15 |
| 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, Yosuke Seo, Makoto Saito | 1993-03-09 |
| 5132854 | High speed seek sector servo magnetic disk drive unit | Toshiaki Tsuyoshi, Yosuke Seo | 1992-07-21 |
| 5109311 | Magnetic disk device and method of recording/retrieving information | Masanobu Hanazono, Shinji Narishige, Yutaka Sugita, Hiroshi Fukui, Hirotsugu Fukuoka +4 more | 1992-04-28 |
| 5008761 | Readout circuit in magnetic recording device | Nobumasa Nishiyama, Makoto Saito, Yasuhide Ouchi, Yasuhiro Katoh, Yoshihisa Kamo +3 more | 1991-04-16 |
| 4907100 | Readout circuit in magnetic recording device | Nobumasa Nishiyama, Makoto Saito, Yasuhide Ouchi, Yasuhiro Katoh, Yoshihasa Kamo +3 more | 1990-03-06 |
| 4851939 | Actuator driving apparatus and magnetic disk drive system with a smaller number of high power amplifiers than actuators | Yosuke Seo, Yoshiyuki Hirano, Takashi Tamura, Kazuyoshi Nakabayashi | 1989-07-25 |
| 4823208 | Multi slice level signal circuit | Yasuhide Ouchi, Nobumasa Nishiyama, Takashi Tamura, Makoto Saitoh, Reijiro Tsuchiya | 1989-04-18 |