Inventor · disambiguated record
Naoya Hasegawa
Also filed as: HASEGAWA NAOYA
190 granted patents·25 pending applications·2,618 citations·filing 1990–2017
99Inventor score
Files withALPS ELECTRIC CO LTD176TDK CORP26NISHIMURA KAZUMASA8NTN TOYO BEARING CO LTD2ALPS ELECTRIC CO INC1
Top patents by PatentIndex Score
215 records- 0197US7433161B2Spin-valve element having fixed layer containing nano-oxide layerALPS ELECTRIC CO LTD·Filed 2005·Granted Oct 7, 2008·43 cites·20 claims
- 0297US6707649B2Magnetic sensing element permitting decrease in effective element size while maintaining large optical element sizeALPS ELECTRIC CO LTD·Filed 2002·Granted Mar 16, 2004·85 cites·18 claims
- 0396US6980403B2Magnetic sensing element with side shield layersALPS ELECTRIC CO LTD·Filed 2003·Granted Dec 27, 2005·90 cites·39 claims
- 0495US7466525B2Magnetic sensing element including laminated film composed of half-metal and NiFe alloy as free layerTDK CORP·Filed 2006·Granted Dec 16, 2008·43 cites·19 claims
- 0594US7800867B2CPP GMR head with antiferromagnetic layer disposed at rear of ferrimagnetic pinned layerTDK CORP·Filed 2009·Granted Sep 21, 2010·15 cites·2 claims
- 0694US7106559B2Exchange coupling film and magnetoresistive element using the sameALPS ELECTRIC CO LTD·Filed 2005·Granted Sep 12, 2006·12 cites·16 claims
- 0793US7933100B2Tunneling magnetic sensor including free magnetic layer and magnesium protective layer disposed thereonTDK CORP·Filed 2007·Granted Apr 26, 2011·17 cites·7 claims
- 0893US7123453B2Exchange coupling film and magnetoresistive element using the sameALPS ELECTRIC CO LTD·Filed 2005·Granted Oct 17, 2006·11 cites·17 claims
- 0992US7220499B2CPP giant magnetoresistive head having antiferromagnetic film disposed in rear of elementALPS ELECTRIC CO LTD·Filed 2004·Granted May 22, 2007·51 cites·40 claims
- 1092US6292334B1Thin film magnetic head comprising shield layer having stabilized magnetic domain structureALPS ELECTRIC CO LTD·Filed 1999·Granted Sep 18, 2001·74 cites·36 claims
- 1191US7336453B2Magnetic sensing element including pinned layer and/or free layer composed of [110] crystal planes-oriented Heusler alloyALPS ELECTRIC CO LTD·Filed 2004·Granted Feb 26, 2008·33 cites·15 claims
- 1291US6587315B1Magnetoresistive-effect device with a magnetic coupling junctionALPS ELECTRIC CO LTD·Filed 2000·Granted Jul 1, 2003·27 cites·12 claims
- 1391US6500570B2Spin-valve magnetoresistive element and method for making the sameALPS ELECTRIC CO LTD·Filed 2000·Granted Dec 31, 2002·35 cites·43 claims
- 1490US7295408B2Dual type magnetic sensing element wherein ΔR×A in upstream part in flow direction of electric current is smaller than ΔR×A in downstream partALPS ELECTRIC CO LTD·Filed 2005·Granted Nov 13, 2007·10 cites·33 claims
- 1590US6751073B2Tunneling magnetoresistive element and method of manufacturing the sameALPS ELECTRIC CO LTD·Filed 2001·Granted Jun 15, 2004·25 cites·11 claims
- 1690US6591479B2Production method for a spin-valve type magnetoresistive elementALPS ELECTRIC CO LTD·Filed 2000·Granted Jul 15, 2003·27 cites·1 claims
- 1790US6587316B2Spin-valve type thin film magnetic elementALPS ELECTRIC CO LTD·Filed 2001·Granted Jul 1, 2003·32 cites·14 claims
- 1890US6538858B1Spin-valve thin film element and method of manufacturing the sameALPS ELECTRIC CO LTD·Filed 2000·Granted Mar 25, 2003·31 cites·15 claims
- 1989US7599155B2Self-pinned CPP giant magnetoresistive head with antiferromagnetic film absent from current pathTDK CORP·Filed 2004·Granted Oct 6, 2009·23 cites·8 claims
- 2089US6608739B1Spin valve thin film magnetic element having first and second free magnetic layers having antiparallel magnetization directionsALPS ELECTRIC CO LTD·Filed 2000·Granted Aug 19, 2003·29 cites·1 claims
- 2188US6867952B2Magnetic sensing element with ESD resistance improved by adjusting the lengths of antiferromagnetic layers and free layer in the height directionALPS ELECTRIC CO LTD·Filed 2003·Granted Mar 15, 2005·23 cites·12 claims
- 2288US6643107B1Spin valve thin film magnetic element and method of manufacturing the sameALPS ELECTRIC CO LTD·Filed 2000·Granted Nov 4, 2003·32 cites·65 claims
- 2388US6351204B1Thin magnetic element and transformerALPS ELECTRIC CO LTD·Filed 2000·Granted Feb 26, 2002·29 cites·4 claims
- 2487US7218487B2Exchange coupling film and magnetoresistive element using the sameALPS ELECTRIC CO LTD·Filed 2006·Granted May 15, 2007·5 cites·16 claims
- 2587US6807034B2Dual spin-valve CCP type thin-film magnetic element with multi free layersALPS ELECTRIC CO LTD·Filed 2002·Granted Oct 19, 2004·36 cites·29 claims
- 2687US6764778B2Thin film magnetic element with accurately controllable track width and method of manufacturing the sameALPS ELECTRIC CO LTD·Filed 2001·Granted Jul 20, 2004·30 cites·57 claims
- 2787US6714388B2Magnetic sensing element having improved magnetic sensitivityALPS ELECTRIC CO LTD·Filed 2002·Granted Mar 30, 2004·29 cites·36 claims
- 2887US6282069B1Magnetoresistive element having a first antiferromagnetic layer contacting a pinned magnetic layer and a second antiferromagnetic layer contacting a free magnetic layerALPS ELECTRIC CO LTD·Filed 1998·Granted Aug 28, 2001·47 cites·7 claims
- 2987US6221172B1Manufacturing method of spin-valve magnetoresistive thin film elementALPS ELECTRIC CO INC·Filed 1999·Granted Apr 24, 2001·43 cites·28 claims
- 3086US5891586AMultilayer thin-film for magnetoresistive deviceALPS ELECTRIC CO LTD·Filed 1996·Granted Apr 6, 1999·48 cites·12 claims
- 3185US7268984B2Magnetic detecting element having a self-pinned layerALPS ELECTRIC CO LTD·Filed 2005·Granted Sep 11, 2007·6 cites·13 claims
- 3285US6496338B2Spin-valve magnetoresistive sensor including a first antiferromagnetic layer for increasing a coercive force and a second antiferromagnetic layer for imposing a longitudinal biasALPS ELECTRIC CO LTD·Filed 2001·Granted Dec 17, 2002·16 cites·6 claims
- 3384US7499248B2Magnetic detective head comprising free layerTDK CORP·Filed 2006·Granted Mar 3, 2009·5 cites·9 claims
- 3484US6783874B2Magnetic sensor having second antiferromagnetic layers and two types of electrode layers on free magnetic layer and manufacturing method thereofALPS ELECTRIC CO LTD·Filed 2003·Granted Aug 31, 2004·19 cites·24 claims
- 3584US6756135B2Spin valve thin-film magnetic elementALPS ELECTRIC CO LTD·Filed 2001·Granted Jun 29, 2004·25 cites·25 claims
- 3683US7265540B2Angle sensor having low waveform distortionALPS ELECTRIC CO LTD·Filed 2004·Granted Sep 4, 2007·22 cites·2 claims
- 3783US6608740B2Spin-valve thin-film magnetic element provided with single free magnetic layerALPS ELECTRIC CO LTD·Filed 2001·Granted Aug 19, 2003·17 cites·28 claims
- 3882US7310207B2Magnetic sensing element including magnetic layer composed of Heusler alloy disposed on underlayer having {111}-oriented fcc structureALPS ELECTRIC CO LTD·Filed 2004·Granted Dec 18, 2007·19 cites·16 claims
- 3982US7029771B2Magnetic sensor having free layer additionally provided with magnetic anisotropy by shape anisotropyALPS ELECTRIC CO LTD·Filed 2003·Granted Apr 18, 2006·19 cites·27 claims
- 4082US7002782B2Magnetic sensing element biased by two antiferromagnetic layers above free magnetic layer and two hard bias layers at two sides of the free magnetic layer, and method for making the sameALPS ELECTRIC CO LTD·Filed 2003·Granted Feb 21, 2006·15 cites·5 claims
- 4181US7193411B2Angle sensor having low waveform distortionALPS ELECTRIC CO LTD·Filed 2006·Granted Mar 20, 2007·9 cites·2 claims
- 4281US7092222B2Exchange coupled film having improved current-carrying reliability and improved rate of change in resistance and magnetic sensing element using sameALPS ELECTRIC CO LTD·Filed 2005·Granted Aug 15, 2006·9 cites·73 claims
- 4381US6901652B2Method for manufacturing magnetic sensing element having improved magnetic field sensitivityALPS ELECTRIC CO LTD·Filed 2002·Granted Jun 7, 2005·14 cites·46 claims
- 4481US6140902AThin magnetic element and transformerALPS ELECTRIC CO LTD·Filed 1997·Granted Oct 31, 2000·33 cites·4 claims
- 4580US7310208B2Magnetoresistive sensor containing self-pinned layer containing a plurality of magnetic sublayers with magnetostriction-enhancing layer made of a nonmagnetic materialALPS ELECTRIC CO LTD·Filed 2005·Granted Dec 18, 2007·4 cites·10 claims
- 4680US7126797B2Spin valve magnetoresistive element having pinned magnetic layer composed of epitaxial laminated film having magnetic sublayers and nanomagnetic interlayerALPS ELECTRIC CO LTD·Filed 2004·Granted Oct 24, 2006·23 cites·52 claims
- 4780US6806804B2Magnetic detecting element having β-values selected for free magnetic layer and pinned magnetic layerALPS ELECTRONICS CO LTD·Filed 2003·Granted Oct 19, 2004·24 cites·27 claims
- 4879US7499249B2Spin valve-GMR element in which a non-metal laminate layer is provided as a free magnetic layer and method of manufacturing the sameTDK CORP·Filed 2006·Granted Mar 3, 2009·9 cites·35 claims
- 4979US6856494B2Spin-valve type thin film magnetic element having bias layers and ferromagnetic layersALPS ELECTRIC CO LTD·Filed 2001·Granted Feb 15, 2005·14 cites·16 claims
- 5079US6690554B2Magnetoresistive-effect device with extended AFM layer and method for manufacturing the sameALPS ELECTRIC CO LTD·Filed 2003·Granted Feb 10, 2004·10 cites·21 claims
Showing the top 50 of 215 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →