Issued Patents All Time
Showing 26–50 of 50 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5898542 | Magneto-resistive effect type head with step or protrusion for reducing thermal asperity | Takao Koshikawa | 1999-04-27 |
| 5896243 | Magneto-resistive effect type head with step or protrusion for reducing thermal asperity | Takao Koshikawa | 1999-04-20 |
| 5880904 | Disk drive having a thickness equal to an IC memory card | Tomoyoshi Yamada, Yasumasa Kuroba, Toru Kouhei, Takao Sugawara, Masaru Matsumoto +4 more | 1999-03-09 |
| 5859753 | Spin valve magnetoresistive head with spun valves connected in series | Yoshinori Ohtsuka, Takao Koshikawa | 1999-01-12 |
| 5841608 | Head slider with projections arranged on rails thereof | Yoshiharu Kasamatsu, Toru Yokohata, Takayuki Yamamoto, Takashi Toyoguchi, Seiji Yoneoka | 1998-11-24 |
| 5793560 | Storage device having vibratory head | Hiroshi Maeda, Takao Koshikawa, Takayuki Yamamoto | 1998-08-11 |
| 5781381 | Double-driving head actuator | Shinji Koganezawa | 1998-07-14 |
| 5777827 | Horizontal type magneto-resistive head using flux guide | Takao Koshikawa, Hitoshi Kanai, Junichi Kane, Yoshinori Otsuka, Yukinori Ikegawa | 1998-07-07 |
| 5771141 | Magnetoresistive head and magnetic recording/reproducing apparatus | Yoshinori Ohtsuka, Takao Koshikawa, Yuji Uehara, Eiichi Kanda, Ken-ichi AOSHIMA +2 more | 1998-06-23 |
| 5764444 | Mechanism for minute movement of a head | Takahiro Imamura | 1998-06-09 |
| 5726830 | Air-bearing electromagnetic head slider having negative pressure generating means | Ryosuke Koishi, Seiji Yoneoka | 1998-03-10 |
| 5717630 | Magnetic memory device | Takao Koshikawa, Yukinori Ikegawa, Hiroshi Maeda, Yoshinori Ohtsuka, Takahiro Imamura | 1998-02-10 |
| 5608592 | Head actuator | Tomoyoshi Yamada, Yasumasa Kuroba, Toru Kouhei, Takao Sugawara, Masaru Matsumoto +4 more | 1997-03-04 |
| 5583726 | Magneto-resistive head using flux guide | Takao Koshikawa, Hitoshi Kanai, Junichi Kane, Yoshinori Otsuka, Yukinori Ikegawa | 1996-12-10 |
| 5519270 | Spindle motor and disk drive having the same | Tomoyoshi Yamada, Keiji Aruga | 1996-05-21 |
| 5432820 | Maximum-likelihood decoding method and device | Takao Sugawara, Takashi Aikawa, Hiroshi Mutoh, Kiichirou Kasai | 1995-07-11 |
| 5400192 | Storage device having vibratory head | Hiroshi Maeda, Takao Koshikawa, Takayuki Yamamoto | 1995-03-21 |
| 5349486 | Magnetic disk storage apparatus having a vibration proof structure | Masaharu Sugimoto, Keiji Aruga, Tomoyoshi Yamada, Takahiro Imamura | 1994-09-20 |
| 5287385 | Viterbi decoding system including variable-order equalizer | Takao Sugawara, Hiroshi Mutoh, Kiichirou Kasai, Takenori Ohshima | 1994-02-15 |
| 5151639 | System for positioning a transducer | Susumi Hasegawa, Kazuhiko Takaishi | 1992-09-29 |
| 5112147 | Rotating support apparatus in disk storage device | Takahiro Imamura, Keiji Aruga | 1992-05-12 |
| 5012369 | Head suspension mechanism of a recording apparatus with a constant flying height | Takeshi Owe | 1991-04-30 |
| 4967293 | Multi-positioner magnetic disk storage apparatus having means for reducing mechanical vibration interference between positioners | Keiji Aruga, Masahito Iwatsubo, Toshifumi Hatagami | 1990-10-30 |
| 4720754 | Digitally responsive system for positioning a transducer of a storage apparatus | Susumu Hasegawa | 1988-01-19 |
| 4562499 | Magnetic disk unit | — | 1985-12-31 |