Inventor · disambiguated record
Shuichi Hashimoto
Also filed as: HASHIMOTO SHUICHI
39 granted patents·1 pending application·662 citations·filing 1987–2016
98Inventor score
Top patents by PatentIndex Score
40 records- 0191US6128153AHead position control for a disk drive which performs recording about the rotational center even if the recorded servo information is eccentricFUJITSU LTD·Filed 1997·Granted Oct 3, 2000·60 cites·22 claims
- 0286US5903404AHigh density disk unit and disk mediumFUJITSU LTD·Filed 1996·Granted May 11, 1999·50 cites·22 claims
- 0386US4965501AServo circuitFUJITSU LTD·Filed 1990·Granted Oct 23, 1990·45 cites·5 claims
- 0475US5995318AHead positioning control system for disk drives each formed by assembling disks after servo control information is written externally on respective disks and disk driveFUJITSU LTD·Filed 1997·Granted Nov 30, 1999·28 cites·13 claims
- 0575US5682272ADisk drive and method for retrying a read operation upon detecting a read errorFUJITSU LTD·Filed 1995·Granted Oct 28, 1997·30 cites·15 claims
- 0674US7002769B2Head control method and recording apparatusFUJITSU LTD·Filed 2004·Granted Feb 21, 2006·10 cites·6 claims
- 0774US5175914AMachine tool having dual spindles and tool restsYAMAZAKI MAZAK CORP·Filed 1989·Granted Jan 5, 1993·37 cites·13 claims
- 0874US4949444AMachine tool machining methodYAMAZAKI MAZAK CORP·Filed 1988·Granted Aug 21, 1990·38 cites·2 claims
- 0972US5063454AAutomatic adjustment method and system for servo motor circuit of a magnetic disk apparatusFUJITSU LTD·Filed 1990·Granted Nov 5, 1991·23 cites·14 claims
- 1071US6774615B2Resonance-frequency measuring method determining a resonance frequency by counting the number of off-track occurrencesFUJITSU LTD·Filed 2002·Granted Aug 10, 2004·7 cites·4 claims
- 1171US5844744AHead positioning control apparatus of disk drive and method of controlling the same apparatusFUJITSU LTD·Filed 1990·Granted Dec 1, 1998·25 cites·32 claims
- 1270US7365927B2Eccentricity correction data recording method and recording medium having eccentricity correction dataFUJITSU LTD·Filed 2004·Granted Apr 29, 2008·9 cites·12 claims
- 1368US10000835B2Cooling method and cooling device for Al alloy manufactured castingMAZDA MOTOR·Filed 2013·Granted Jun 19, 2018·1 cites·7 claims
- 1468US5786113APhoto-mask used in aligner for exactly transferring main pattern assisted by semi-transparent auxiliary pattern and process of fabrication thereofNEC CORP·Filed 1996·Granted Jul 28, 1998·39 cites·15 claims
- 1565US5523900AHead position detecting method and apparatusFUJITSU LTD·Filed 1994·Granted Jun 4, 1996·15 cites·25 claims
- 1665US5115546AComplex machining machine toolYAMAZAKI MAZAK CORP·Filed 1990·Granted May 26, 1992·25 cites·11 claims
- 1765US4866544AData modulation and demodulation system for magnetic recording systemFUJITSU LTD·Filed 1987·Granted Sep 12, 1989·14 cites·13 claims
- 1863US5831787AHead position demodulating methodFUJITSU LTD·Filed 1996·Granted Nov 3, 1998·17 cites·9 claims
- 1963US4908561AServo amplifier circuitFUJITSU LTD·Filed 1989·Granted Mar 13, 1990·13 cites·5 claims
- 2061US7164261B2Resonance-frequency measuring method determining a resonance frequency by counting the number of off-track occurrencesFUJITSU LTD·Filed 2004·Granted Jan 16, 2007·4 cites·2 claims
- 2161US5231550ATrack access control system preventing unintentional delay in movement of head in non-adjusted disc deviceFUJITSU LTD·Filed 1991·Granted Jul 27, 1993·14 cites·12 claims
- 2259US5625505AMethod of and apparatus for regenerating partial-response record signalFUJITSU LTD·Filed 1995·Granted Apr 29, 1997·15 cites·9 claims
- 2356US6191902B1Magnetic disk apparatus and magnetic disk mediumFUJITSU LTD·Filed 1997·Granted Feb 20, 2001·15 cites·19 claims
- 2455US5566296AMethod and apparatus for eliminating noises with a read operation of magnetic disk unitFUJITSU LTD·Filed 1994·Granted Oct 15, 1996·10 cites·9 claims
- 2555US5191817AMachining method for the use of a complex machining machine toolYAMAZAKI MAZAK CORP·Filed 1989·Granted Mar 9, 1993·18 cites·4 claims
- 2653US5724204AApparatus and method of reproducing synchronization signal in disc storage systemFUJITSU LTD·Filed 1994·Granted Mar 3, 1998·10 cites·56 claims
- 2753US5709970AMask having a pattern for detecting illuminance nonuniformityNEC CORP·Filed 1996·Granted Jan 20, 1998·14 cites·5 claims
- 2852US5097575AComplex machining machine toolYAMAZAKI MAZAK CORP·Filed 1990·Granted Mar 24, 1992·18 cites·4 claims
- 2950US5173647AServo positioning circuitFUJITSU LTD·Filed 1990·Granted Dec 22, 1992·8 cites·20 claims
- 3049US6048648AMask including optical shield layer having variable light transmittanceNEC CORP·Filed 1998·Granted Apr 11, 2000·11 cites·9 claims
- 3148US5311379AMethod and system for positioning head on target cylinder of diskFUJITSU LTD·Filed 1991·Granted May 10, 1994·8 cites·9 claims
- 3247US5194788AServo circuitFUJITSU LTD·Filed 1990·Granted Mar 16, 1993·7 cites·10 claims
- 3346US5095598AComplex machining machine toolYAMAZAKI MAZAK CORP·Filed 1990·Granted Mar 17, 1992·9 cites·2 claims
- 3443US5204932AServo circuit for magnetic disk apparatusFUJITSU LTD·Filed 1990·Granted Apr 20, 1993·6 cites·19 claims
- 3540US5342967ACrystal modifications of 2-M-toluidino-3-methyl-6-di-N-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modificationsYAMAMOTO CHEMICALS INC·Filed 1992·Granted Aug 30, 1994·1 cites·10 claims
- 3638US5194798AServo circuit control method and systemFUJITSU LTD·Filed 1990·Granted Mar 16, 1993·4 cites·14 claims
- 3736US6009052AMethod and circuit for controlling head positionFUJITSU LTD·Filed 1993·Granted Dec 28, 1999·3 cites·19 claims
- 3834US2017229141A1Managing read and write errors under external vibrationHGST Netherlands BV·Filed 2016·Application pending·0 cites
- 3931US5438032ACrystal modifications of 2-m-toluidino-3-methyl-6-di-n-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modificationsYAMAMOTO CHEMICALS INC·Filed 1994·Granted Aug 1, 1995·0 cites·9 claims
- 4031US5432659AMagnetic disk unit having a plurality of magnetic headsFUJITSU LTD·Filed 1993·Granted Jul 11, 1995·1 cites·7 claims
Join the waitlist — get patent alerts
Get an alert when Shuichi Hashimoto files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →