Inventor
ARUGA KEIJI
JP33 patents
⚠️ This page may combine multiple inventors who share the name “ARUGA KEIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
30 patentsUS5349486ASep 20, 1994
Magnetic disk storage apparatus having a vibration proof structure
FUJITSU LTD114 citations98
US6128153AOct 3, 2000
Head position control for a disk drive which performs recording about the rotational center even if the recorded servo information is eccentric
FUJITSU LTD60 citations96
US5519270AMay 21, 1996
Spindle motor and disk drive having the same
FUJITSU LTD80 citations96
US6266207B1Jul 24, 2001
Sound reducing cover seal for information recording apparatus
FUJITSU LTD46 citations95
US5880904AMar 9, 1999
Disk drive having a thickness equal to an IC memory card
FUJITSU LTD56 citations95
US4967293AOct 30, 1990
Multi-positioner magnetic disk storage apparatus having means for reducing mechanical vibration interference between positioners
FUJITSU LTD67 citations95
US7336444B2Feb 26, 2008
Magnetic head assembly
FUJITSU LTD21 citations92
US6567237B2May 20, 2003
Sound reducing cover seal for information recording apparatus
FUJITSU LTD18 citations92
US6501610B1Dec 31, 2002
Detecting circuit for read signal from magnetic recording system using partial response
FUJITSU LTD52 citations92
US6487038B1Nov 26, 2002
Recording disk drive and method of assembling the same
FUJITSU LTD44 citations92
US6466400B1Oct 15, 2002
Magnetic disk drive capable of reducing noise at starting utilizing conjoining, damped washers to support shafts in the disk drive
FUJITSU LTD27 citations92
US6101453AAug 8, 2000
Method and apparatus for analyzing vibration of housing of disk device
FUJITSU LTD25 citations92
US6064541AMay 16, 2000
Servo pattern writing method for magnetic disk drives, and magnetic disk drive adopting the method
FUJITSU LTD20 citations92
US6025973AFeb 15, 2000
Construction for attaching a disk in a disk drive
FUJITSU LTD30 citations92
US6008965ADec 28, 1999
Disk drive with rectification wall for circulation filter and filter unit therefor
FUJITSU LTD43 citations92
US5995318ANov 30, 1999
Head positioning control system for disk drives each formed by assembling disks after servo control information is written externally on respective disks and disk drive
FUJITSU LTD28 citations92
US5764441AJun 9, 1998
Head actuator having reduced and controlled vibration characteristics for high speed disk drive systems
FUJITSU LTD32 citations92
US5608592AMar 4, 1997
Head actuator
FUJITSU LTD24 citations92
US5041935AAug 20, 1991
Rotary actuator for positioning magnetic heads in a disk drive
FUJITSU LTD36 citations92
US6690549B1Feb 10, 2004
Storage device
FUJITSU LTD33 citations91
US6543289B1Apr 8, 2003
Rotational vibration testing apparatus
FUJITSU LTD21 citations91
US6373654B1Apr 16, 2002
Disk device and apparatus for writing reference signal into the device
FUJITSU LTD45 citations90
US5112147AMay 12, 1992
Rotating support apparatus in disk storage device
FUJITSU LTD15 citations74
US6016237AJan 18, 2000
Shaft construction of a disk drive
FUJITSU LTD6 citations73
US5986362ANov 16, 1999
Magnetic circuit for voice coil motor of flat-coil type
FUJITSU LTD11 citations73
US7619854B2Nov 17, 2009
Product including filmed screw
FUJITSU LTD2 citations63
US7564647B2Jul 21, 2009
Filtering device for a magnetic disc apparatus
FUJITSU LTD2 citations62
US7551399B2Jun 23, 2009
Head suspension including flexure having as elastic bending section
FUJITSU LTD3 citations62
US7414810B2Aug 19, 2008
Magnetic head structure with insulating layer configured to reduce thermal deformation of floating surface towards disk
FUJITSU LTD3 citations61
US7599150B2Oct 6, 2009
Head stack assembly, its manufacturing method, and magnetic disc drive having the same
FUJITSU LTD0 citations39