Inventor
YAMADA TOMOYOSHI
JP31 patents
⚠️ This page may combine multiple inventors who share the name “YAMADA TOMOYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
23 patentsUS5349486ASep 20, 1994
Magnetic disk storage apparatus having a vibration proof structure
FUJITSU LTD114 citations98
US6327120B1Dec 4, 2001
Actuator using piezoelectric element and head-positioning mechanism using the actuator
FUJITSU LTD97 citations96
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
US5880904AMar 9, 1999
Disk drive having a thickness equal to an IC memory card
FUJITSU LTD56 citations95
US6538854B2Mar 25, 2003
Actuator using piezoelectric element and head-positioning mechanism using the actuator
FUJITSU LTD59 citations94
US6496322B1Dec 17, 2002
Head position control for a disk drive which performs recording about the rotational center even if the recorded servo information is eccentric
FUJITSU LTD28 citations92
US6341051B2Jan 22, 2002
Disk drive having external shock resistance
FUJITSU LTD21 citations92
US6025973AFeb 15, 2000
Construction for attaching a disk in a disk drive
FUJITSU LTD30 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
US5926347AJul 20, 1999
Magnetic disk drive provided with means for pressing head against disk
FUJITSU LTD23 citations91
US6904010B1Jun 7, 2005
Method of writing servo tracks for disk file apparatus using write start or stop sectors
FUJITSU LTD17 citations83
US6819519B2Nov 16, 2004
Head position control method for a disk device and the disk device
FUJITSU LTD11 citations73
US6081990AJul 4, 2000
Method for incorporating disk media into magnetic disk drive
FUJITSU LTD14 citations73
US6016237AJan 18, 2000
Shaft construction of a disk drive
FUJITSU LTD6 citations73
US6671120B2Dec 30, 2003
Head carriage assembly drive system and disk drive
FUJITSU LTD3 citations63
US7515377B2Apr 7, 2009
Storage apparatus and control method for detecting vibration produced during seeking
FUJITSU LTD4 citations62
US7508620B2Mar 24, 2009
Disk apparatus, information processing system, and information providing apparatus
FUJITSU LTD2 citations62
US7154702B2Dec 26, 2006
Head actuator
FUJITSU LTD1 citations52
US7385779B2Jun 10, 2008
Disk device with bi-directional communication function
FUJITSU LTD0 citations51
US7158349B2Jan 2, 2007
Ramp member assembly including flying slider in recording disk drive
FUJITSU LTD0 citations49
TOSHIBA KK
4 patentsUS8848303B1Sep 30, 2014
Disk storage apparatus and method for servo demodulation
TOSHIBA KK8 citations84
US8964325B1Feb 24, 2015
Magnetic disk device and method for read/write offset error correction
TOSHIBA KK5 citations73
US9177581B2Nov 3, 2015
Head position demodulation method and magnetic disk device
TOSHIBA KK2 citations63
US8908303B1Dec 9, 2014
Method for servo demodulation and disk storage apparatus
TOSHIBA KK3 citations63
TOYODA GOSEI KK
3 patentsUS4734323AMar 29, 1988
Vibration damping soundproof sheets for use in vehicles
TOYODA GOSEI KK111 citations94
US4573693AMar 4, 1986
Dust boot with multiple layer construction of bellows
TOYODA GOSEI KK30 citations91
US4396200AAug 2, 1983
Packing assembly for sealing between cylinder head and cylinder head cover gasket
TOYODA GOSEI KK11 citations68