P

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 patents
US5349486ASep 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 patents

TOYODA GOSEI KK

3 patents

TOSHIBA STORAGE DEVICE CORP

1 patent