Inventor · disambiguated record
Fumio Kugiya
Also filed as: KUGIYA FUMIO
22 granted patents·3 pending applications·905 citations·filing 1986–2003
97Inventor score
Top patents by PatentIndex Score
25 records- 0198US5390061AMultilayer magnetoresistance effect-type magnetic headHITACHI LTD·Filed 1991·Granted Feb 14, 1995·156 cites·27 claims
- 0295US6687099B2Magnetic head with conductors formed on endlayers of a multilayer film having magnetic layer coercive force differenceHITACHI LTD·Filed 2002·Granted Feb 3, 2004·33 cites·10 claims
- 0395US5513165AMethod for controlling the farm of a magnetic domain of a magneto-optical disk using pre-write testingHITACHI LTD·Filed 1993·Granted Apr 30, 1996·90 cites·23 claims
- 0494US5766718ALongitudinal magnetic recording medium and apparatusHITACHI LTD·Filed 1994·Granted Jun 16, 1998·70 cites·28 claims
- 0594US5726837AMultilayer magnetoresistance effect-type magnetic headHITACHI LTD·Filed 1994·Granted Mar 10, 1998·43 cites·24 claims
- 0693US5703855AOptical disk apparatus and recording and reading method for an optical disk using the sameHITACHI LTD·Filed 1994·Granted Dec 30, 1997·61 cites·7 claims
- 0793US5568331AMethod of head positioning and magnetic recording disk drive using the sameHITACHI LTD·Filed 1990·Granted Oct 22, 1996·67 cites·22 claims
- 0892US5848045AMethod for recording and reading an optical diskHITACHI LTD·Filed 1997·Granted Dec 8, 1998·70 cites·14 claims
- 0991US5325244AMagnetic recording data storage systemHITACHI LTD·Filed 1992·Granted Jun 28, 1994·55 cites·12 claims
- 1089US6011674AMagnetoresistance effect multilayer film with ferromagnetic film sublayers of different ferromagnetic material compositionsHITACHI LTD·Filed 1996·Granted Jan 4, 2000·33 cites·6 claims
- 1188US6490123B1Disc drive having 3.5 inch form factor housing and 2.5 inch form factor disk mediaHITACHI LTD·Filed 1998·Granted Dec 3, 2002·43 cites·4 claims
- 1286US6483677B2Magnetic disk apparatus including magnetic head having multilayered reproducing element using tunneling effectHITACHI LTD·Filed 2001·Granted Nov 19, 2002·11 cites·6 claims
- 1385US5093822AHigh-density magnetic recording and optical reproducing apparatusHITACHI LTD·Filed 1990·Granted Mar 3, 1992·39 cites·16 claims
- 1479US6278593B1Magnetoresistance effect elements and magnetic heads using the tunneling magnetoresistive effectHITACHI LTD·Filed 1999·Granted Aug 21, 2001·17 cites·64 claims
- 1577US5463600AMagneto-optical recording system using recording waveform having a plurality of power levels providing high recording densityHITACHI LTD·Filed 1994·Granted Oct 31, 1995·40 cites·26 claims
- 1673US5420846ARecording medium having a plurality of nonlinear transmission characteristicsHITACHI LTD·Filed 1993·Granted May 30, 1995·20 cites·21 claims
- 1769US7054120B2Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effectHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted May 30, 2006·7 cites·7 claims
- 1857US5736235AMagnetic recording medium having at least two magnetic layers with easy axes oriented in the same directionHITACHI LTD·Filed 1991·Granted Apr 7, 1998·16 cites·15 claims
- 1956US5083226AMagnetic disk driveHITACHI LTD·Filed 1989·Granted Jan 21, 1992·9 cites·19 claims
- 2054US7227818B1Magneto-optical data recording/reproducing methodHITACHI LTD·Filed 1995·Granted Jun 5, 2007·11 cites·15 claims
- 2149US4777553AMagnetic headHITACHI LTD·Filed 1986·Granted Oct 11, 1988·7 cites·11 claims
- 2249US4755891ACircuit for processing waveform of reproduced signal in magnetic reproducing apparatusHITACHI LTD·Filed 1986·Granted Jul 5, 1988·7 cites·1 claims
- 2343US2002093760A1Magnetic disk drive and magnetic disk drive systemHITACHI LTD·Filed 2002·Application pending·0 cites
- 2443US2002093758A1Magnetic disk drive and magnetic disk drive systemHITACHI LTD·Filed 2002·Application pending·0 cites
- 2543US2002093759A1Magnetic disk drive and magnetic disk drive systemHITACHI LTD·Filed 2002·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →