MS

Masahiko Sega

HI Hitachi: 13 patents #3,142 of 28,497Top 15%
HG HGST: 7 patents #738 of 1,677Top 45%
Overall (All Time): #225,240 of 4,157,543Top 6%
20
Patents All Time

Issued Patents All Time

Showing 1–20 of 20 patents

Patent #TitleCo-InventorsDate
7643245 Magnetic disc unit with gap between magnetic disc and shroud Mikio Tokuyama, Hayato Shimizu, Satomitsu Imai, Shozo Saegusa, Toshihisa Okazaki +1 more 2010-01-05
7580221 Magnetic disk drive with compensation against disturbance Yoshio Soyama, Takashi Kouno, Toshihiro Arisaka 2009-08-25
7535672 Magnetic disk drive with elastic support member Shin Nagahiro, Jiro Kaneko, Gentarou Nakamura 2009-05-19
7336440 Magnetic disc unit with gap between magnetic disc and shroud Mikio Tokuyama, Hayato Shimizu, Satomitsu Imai, Shozo Saegusa, Toshihisa Okazaki +1 more 2008-02-26
7330334 Magnetic disk apparatus with shroud and having open space downstream of moveable arms in communication with bypass channel Hayato Shimizu, Masao Iwakura, Shigeo Nakamura, Kazuo Sakai, Shigenori Togashi +7 more 2008-02-12
7072141 Magnetic disc unit with range of gap between disc and shroud Mikio Tokuyama, Hayato Shimizu, Satomitsu Imai, Shozo Saegusa, Toshihisa Okazaki +1 more 2006-07-04
6982852 Carriage arm assembly for magnetic disk drive Shin Nagahiro, Toshihiro Arisaka, Toshihiko Shimizu, Hiromitsu Masuda, Tetsuya Hamaguchi +2 more 2006-01-03
6927936 Magnetic disk device Satomitsu Imai, Takashi Kouno, Marutomo Goto, Shigeo Nakamura 2005-08-09
6898049 Magnetic disk apparatus with air flow bypass channel Hayato Shimizu, Masao Iwakura, Shigeo Nakamura, Kazuo Sakai, Shigenori Togashi +7 more 2005-05-24
6751050 Magnetic disc unit Mikio Tokuyama, Hayato Shimizu, Satomitsu Imai, Shozo Saegusa, Toshihisa Okazaki +1 more 2004-06-15
6665139 Magnetic-disc unit with gap between disc and shroud Mikio Tokuyama, Hayato Shimizu, Satomitsu Imai, Shozo Saegusa, Toshihisa Okazaki +7 more 2003-12-16
6600626 Magnetic disk apparatus Hayato Shimizu, Masao Iwakura, Shigeo Nakamura, Kazuo Sakai, Shigenori Togashi +7 more 2003-07-29
6560066 Magnetic disk device Satomitsu Imai, Takashi Kouno, Marutomo Goto, Shigeo Nakamura 2003-05-06
6501645 Magnetic disk drive with unique cable wiring scheme and electronic device using the same Shigeyuki Hanazawa, Toshiaki Kojima, Yasuhiro Matsuda 2002-12-31
6369977 Magnetic disk device Satomitsu Imai, Takashi Kouno, Marutomo Goto, Shigeo Nakamura 2002-04-09
6115213 Bearing assembly having compact thickness, spindle motor and actuator using the same bearing assembly, and magnetic disk drive Hiroshi Ikeda, Shinobu Yoshida 2000-09-05
5862011 PC card type magnetic disk device Tomio Suzuki, Tsuyoshi Takahashi, Hiroyuki Mitsuhashi, Tetsuo Yuki, Takashi Matsuki 1999-01-19
5416658 Information storage device using a rotary recording medium Jiro Kaneko, Tsuyoshi Takahashi 1995-05-16
5267111 Voice coil motor with discrete flux paths Yuji Nishimura, Tsuyoshi Takahashi, Jyousei Shimizu, Tomio Suzuki 1993-11-30
5241435 Servo information recording method for a storage apparatus Shigeyoshi Saito, Yuji Hata, Takuji Ogawa, Jyousei Shimizu, Tsuyoshi Takahashi +1 more 1993-08-31