Takashi Yamaguchi

Person

Tachikawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Signaling system
- Patent number 7,756,613
- Issue date Jul 13, 2010
- Hitachi, Ltd.
- Keiichi Katsuta
- B61 - RAILWAYS
Information Patent Grant
Magnetic disk apparatus and servo signal recording method
- Patent number 7,116,509
- Issue date Oct 3, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for locking a moveable part of a magnetic disk apparatus
- Patent number 7,116,508
- Issue date Oct 3, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Kyo Akagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk device having a low-profile motor without deteriorati...
- Patent number 7,035,044
- Issue date Apr 25, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Asao Nakano
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk device and servo write method
- Patent number 6,999,261
- Issue date Feb 14, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Kenichiro Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Servo pattern recording method
- Patent number 6,970,320
- Issue date Nov 29, 2005
- Hitachi Global Storage Technologies Japan, Ltd.
- Kenichiro Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive motor and disk drive storage device incorporating same
- Patent number 6,950,276
- Issue date Sep 27, 2005
- Hitachi, Ltd.
- Yuji Fujita
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disc apparatus having stator structure with reduced distor...
- Patent number 6,943,984
- Issue date Sep 13, 2005
- Hitachi, Ltd.
- Yasuo Amano
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus and its servo signal recording method
- Patent number 6,906,884
- Issue date Jun 14, 2005
- Hitachi, Ltd.
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus and servo signal recording method
- Patent number 6,888,696
- Issue date May 3, 2005
- Hitachi Global Storage Technologies Japan, Ltd.
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Grant
Vehicle-mounted information processing apparatus having magnetic di...
- Patent number 6,862,505
- Issue date Mar 1, 2005
- Hitachi, Ltd.
- Naoki Satoh
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for latching a magnetic disk
- Patent number 6,862,153
- Issue date Mar 1, 2005
- Hitachi, Ltd.
- Kyo Akagi
- G11 - INFORMATION STORAGE
Information Patent Grant
Positioning control method
- Patent number 6,744,591
- Issue date Jun 1, 2004
- Hitachi, Ltd.
- Shinsuke Nakagawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk apparatus and information processing system discriminative plu...
- Patent number 6,687,072
- Issue date Feb 3, 2004
- Hitachi, Ltd.
- Atsushi Okuyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disc apparatus having actuator for head positioning mechanism
- Patent number 6,636,385
- Issue date Oct 21, 2003
- Hitachi, Ltd.
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disc apparatus having wiring on the outer bottom
- Patent number 6,594,107
- Issue date Jul 15, 2003
- Hitachi, Ltd.
- Takako Hayakawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus
- Patent number 6,552,878
- Issue date Apr 22, 2003
- Hitachi, Ltd.
- Kazutaka Sato
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drives
- Patent number 6,483,659
- Issue date Nov 19, 2002
- Hitachi, Ltd.
- Masahito Kobayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus having an accelerometer for detecting accel...
- Patent number 6,407,876
- Issue date Jun 18, 2002
- Hitachi, Ltd.
- Takashi Yamaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus having an accelerometer for detecting accel...
- Patent number 6,335,845
- Issue date Jan 1, 2002
- Hitachi, Ltd.
- Takashi Yamaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Compound design system and method for mechanism parts
- Patent number 6,224,249
- Issue date May 1, 2001
- Hitachi, Ltd.
- Hiroshi Ozawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Apparatus for positioning magnetic head and method of the same
- Patent number 5,986,845
- Issue date Nov 16, 1999
- Hitachi, Ltd.
- Takashi Yamaguchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk apparatus
- Patent number 5,953,178
- Issue date Sep 14, 1999
- Hitachi, Ltd.
- Akio Takatsuka
- G11 - INFORMATION STORAGE
Information Patent Grant
Positioning adaptive control method and positioning device as well...
- Patent number 5,936,792
- Issue date Aug 10, 1999
- Hitachi, Ltd.
- Masahito Kobayashi
- G05 - CONTROLLING REGULATING
Information Patent Grant
Disk apparatus and its control method
- Patent number 5,404,255
- Issue date Apr 4, 1995
- Hitachi, Ltd.
- Masahito Kobayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic disk unit and manufacturing method of carriage structure t...
- Patent number 5,301,078
- Issue date Apr 5, 1994
- Hitachi, Ltd.
- Toshiaki Makino
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for control of positioning
- Patent number 5,164,931
- Issue date Nov 17, 1992
- Hitachi, Ltd.
- Takashi Yamaguchi
- G05 - CONTROLLING REGULATING
Information Patent Grant
Table device
- Patent number 4,667,139
- Issue date May 19, 1987
- Hitachi, Ltd.
- Hiromu Hirai
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
High-breakdown-voltage semiconductor device
- Patent number 4,443,812
- Issue date Apr 17, 1984
- Hitachi, Ltd.
- Ichiro Imaizumi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
High-breakdown-voltage resistance element for integrated circuit wi...
- Patent number 4,423,433
- Issue date Dec 27, 1983
- Hitachi, Ltd.
- Ichiro Imaizumi
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Signaling system
- Publication number 20060195236
- Publication date Aug 31, 2006
- HITACHI, LTD.
- Keiichi Katsuta
- B61 - RAILWAYS
Information Patent Application
Magnetic disk apparatus
- Publication number 20050128627
- Publication date Jun 16, 2005
- Kyo Akagi
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk apparatus and servo signal recording method
- Publication number 20040190184
- Publication date Sep 30, 2004
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Application
Servo pattern recording method
- Publication number 20040120067
- Publication date Jun 24, 2004
- Kenichiro Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Application
Vehicle-mounted information processing apparatus having magnetic di...
- Publication number 20040030472
- Publication date Feb 12, 2004
- Naoki Satoh
- G01 - MEASURING TESTING
Information Patent Application
Disk drive motor and disk drive storage device incorporating same
- Publication number 20040001281
- Publication date Jan 1, 2004
- Hitachi, Ltd
- Yuji Fujita
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disc apparatus
- Publication number 20030235005
- Publication date Dec 25, 2003
- Hitachi, Ltd
- Yasuo Amano
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk device
- Publication number 20030227712
- Publication date Dec 11, 2003
- Asao Nakano
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk apparatus and its servo signal recording method
- Publication number 20030043494
- Publication date Mar 6, 2003
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disc apparatus
- Publication number 20030016468
- Publication date Jan 23, 2003
- Takako Hayakawa
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk device and servo write method
- Publication number 20020186494
- Publication date Dec 12, 2002
- Kenichiro Sugiyama
- G11 - INFORMATION STORAGE
Information Patent Application
Disk apparatus and information processing system
- Publication number 20020126408
- Publication date Sep 12, 2002
- Atsushi Okuyama
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk apparatus
- Publication number 20020097529
- Publication date Jul 25, 2002
- Kazutaka Sato
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disk apparatus
- Publication number 20020027735
- Publication date Mar 7, 2002
- Kyo Akagi
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic disc apparatus and mobile information device
- Publication number 20010015876
- Publication date Aug 23, 2001
- Kei Yasuna
- G11 - INFORMATION STORAGE
Information Patent Application
Positioning control method
- Publication number 20010006438
- Publication date Jul 5, 2001
- Shinsuke Nakagawa
- G11 - INFORMATION STORAGE

Takashi Yamaguchi

Person

Patents Grantslast 30 patents

Signaling system

Magnetic disk apparatus and servo signal recording method

Apparatus for locking a moveable part of a magnetic disk apparatus

Magnetic disk device having a low-profile motor without deteriorati...

Magnetic disk device and servo write method

Servo pattern recording method

Disk drive motor and disk drive storage device incorporating same

Magnetic disc apparatus having stator structure with reduced distor...

Magnetic disk apparatus and its servo signal recording method

Magnetic disk apparatus and servo signal recording method

Vehicle-mounted information processing apparatus having magnetic di...

Apparatus for latching a magnetic disk

Positioning control method

Disk apparatus and information processing system discriminative plu...

Magnetic disc apparatus having actuator for head positioning mechanism

Magnetic disc apparatus having wiring on the outer bottom

Magnetic disk apparatus

Disk drives

Magnetic disk apparatus having an accelerometer for detecting accel...

Magnetic disk apparatus having an accelerometer for detecting accel...

Compound design system and method for mechanism parts

Apparatus for positioning magnetic head and method of the same

Magnetic disk apparatus

Positioning adaptive control method and positioning device as well...

Disk apparatus and its control method

Magnetic disk unit and manufacturing method of carriage structure t...

Method and apparatus for control of positioning

Table device

High-breakdown-voltage semiconductor device

High-breakdown-voltage resistance element for integrated circuit wi...

Patents Applicationslast 30 patents

Signaling system

Magnetic disk apparatus

Magnetic disk apparatus and servo signal recording method

Servo pattern recording method

Vehicle-mounted information processing apparatus having magnetic di...

Disk drive motor and disk drive storage device incorporating same

Magnetic disc apparatus

Magnetic disk device

Magnetic disk apparatus and its servo signal recording method

Magnetic disc apparatus

Magnetic disk device and servo write method

Disk apparatus and information processing system

Magnetic disk apparatus

Magnetic disk apparatus

Magnetic disc apparatus and mobile information device

Positioning control method