Inventor
HASHIMOTO SHUICHI
JP42 patents
⚠️ This page may combine multiple inventors who share the name “HASHIMOTO SHUICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
27 patentsUS6128153AOct 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
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
US5903404AMay 11, 1999
High density disk unit and disk medium
FUJITSU LTD50 citations92
US5063454ANov 5, 1991
Automatic adjustment method and system for servo motor circuit of a magnetic disk apparatus
FUJITSU LTD23 citations92
US4965501AOct 23, 1990
Servo circuit
FUJITSU LTD45 citations92
US5682272AOct 28, 1997
Disk drive and method for retrying a read operation upon detecting a read error
FUJITSU LTD30 citations91
US5844744ADec 1, 1998
Head positioning control apparatus of disk drive and method of controlling the same apparatus
FUJITSU LTD25 citations88
US5831787ANov 3, 1998
Head position demodulating method
FUJITSU LTD17 citations84
US6191902B1Feb 20, 2001
Magnetic disk apparatus and magnetic disk medium
FUJITSU LTD15 citations81
US7365927B2Apr 29, 2008
Eccentricity correction data recording method and recording medium having eccentricity correction data
FUJITSU LTD9 citations80
US6774615B2Aug 10, 2004
Resonance-frequency measuring method determining a resonance frequency by counting the number of off-track occurrences
FUJITSU LTD7 citations74
US5625505AApr 29, 1997
Method of and apparatus for regenerating partial-response record signal
FUJITSU LTD15 citations74
US5566296AOct 15, 1996
Method and apparatus for eliminating noises with a read operation of magnetic disk unit
FUJITSU LTD10 citations74
US5231550AJul 27, 1993
Track access control system preventing unintentional delay in movement of head in non-adjusted disc device
FUJITSU LTD14 citations74
US5194788AMar 16, 1993
Servo circuit
FUJITSU LTD7 citations74
US5173647ADec 22, 1992
Servo positioning circuit
FUJITSU LTD8 citations74
US4908561AMar 13, 1990
Servo amplifier circuit
FUJITSU LTD13 citations74
US4866544ASep 12, 1989
Data modulation and demodulation system for magnetic recording system
FUJITSU LTD14 citations74
US7002769B2Feb 21, 2006
Head control method and recording apparatus
FUJITSU LTD10 citations73
US5523900AJun 4, 1996
Head position detecting method and apparatus
FUJITSU LTD15 citations73
US5724204AMar 3, 1998
Apparatus and method of reproducing synchronization signal in disc storage system
FUJITSU LTD10 citations72
US5311379AMay 10, 1994
Method and system for positioning head on target cylinder of disk
FUJITSU LTD8 citations72
US6009052ADec 28, 1999
Method and circuit for controlling head position
FUJITSU LTD3 citations63
US7164261B2Jan 16, 2007
Resonance-frequency measuring method determining a resonance frequency by counting the number of off-track occurrences
FUJITSU LTD4 citations61
US5204932AApr 20, 1993
Servo circuit for magnetic disk apparatus
FUJITSU LTD6 citations61
US5194798AMar 16, 1993
Servo circuit control method and system
FUJITSU LTD4 citations61
US5432659AJul 11, 1995
Magnetic disk unit having a plurality of magnetic heads
FUJITSU LTD1 citations52
YAMAZAKI MAZAK CORP
7 patentsUS5175914AJan 5, 1993
Machine tool having dual spindles and tool rests
YAMAZAKI MAZAK CORP37 citations92
US5115546AMay 26, 1992
Complex machining machine tool
YAMAZAKI MAZAK CORP25 citations92
US4949444AAug 21, 1990
Machine tool machining method
YAMAZAKI MAZAK CORP38 citations91
US5157824AOct 27, 1992
Opposed spindles lathe having tool rests movable in two different directions
YAMAZAKI MAZAK CORP21 citations81
US5097575AMar 24, 1992
Complex machining machine tool
YAMAZAKI MAZAK CORP18 citations73
US5191817AMar 9, 1993
Machining method for the use of a complex machining machine tool
YAMAZAKI MAZAK CORP18 citations72
US5095598AMar 17, 1992
Complex machining machine tool
YAMAZAKI MAZAK CORP9 citations71
NEC CORP
3 patentsUS5786113AJul 28, 1998
Photo-mask used in aligner for exactly transferring main pattern assisted by semi-transparent auxiliary pattern and process of fabrication thereof
NEC CORP39 citations90
US6048648AApr 11, 2000
Mask including optical shield layer having variable light transmittance
NEC CORP11 citations74
US5709970AJan 20, 1998
Mask having a pattern for detecting illuminance nonuniformity
NEC CORP14 citations74
UNIV YOKOHAMA CITY
2 patentsUS10836814B2Nov 17, 2020
Anti-semaphorin 3A antibody and treatment of Alzheimer's disease and inflammatory immune diseases using same
UNIV YOKOHAMA CITY3 citations69
US9879075B2Jan 30, 2018
Anti-semaphorin 3A antibody and treatment of Alzheimer's disease and inflammatory immune diseases using same
UNIV YOKOHAMA CITY3 citations69
YAMAMOTO CHEMICALS INC
2 patentsUS5438032AAug 1, 1995
Crystal modifications of 2-m-toluidino-3-methyl-6-di-n-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modifications
YAMAMOTO CHEMICALS INC0 citations51
US5342967AAug 30, 1994
Crystal modifications of 2-M-toluidino-3-methyl-6-di-N-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modifications
YAMAMOTO CHEMICALS INC1 citations51