Inventor · disambiguated record
Eiji Umetsu
Also filed as: UMETSU EIJI
66 granted patents·16 pending applications·721 citations·filing 1998–2025
99Inventor score
Top patents by PatentIndex Score
82 records- 0197US7433161B2Spin-valve element having fixed layer containing nano-oxide layerALPS ELECTRIC CO LTD·Filed 2005·Granted Oct 7, 2008·43 cites·20 claims
- 0295US9664576B2Load detector and electronic unit using the sameALPS ELECTRIC CO LTD·Filed 2015·Granted May 30, 2017·10 cites·10 claims
- 0394US7800867B2CPP GMR head with antiferromagnetic layer disposed at rear of ferrimagnetic pinned layerTDK CORP·Filed 2009·Granted Sep 21, 2010·15 cites·2 claims
- 0492US9063599B2Input device and display apparatusALPS ELECTRIC CO LTD·Filed 2013·Granted Jun 23, 2015·24 cites·13 claims
- 0592US7220499B2CPP giant magnetoresistive head having antiferromagnetic film disposed in rear of elementALPS ELECTRIC CO LTD·Filed 2004·Granted May 22, 2007·51 cites·40 claims
- 0690US8516906B2Force sensor and method of manufacturing the sameUMETSU EIJI·Filed 2012·Granted Aug 27, 2013·23 cites·13 claims
- 0789US7599155B2Self-pinned CPP giant magnetoresistive head with antiferromagnetic film absent from current pathTDK CORP·Filed 2004·Granted Oct 6, 2009·23 cites·8 claims
- 0888US11015992B2Load sensor unit and input deviceALPS ALPINE CO LTD·Filed 2020·Granted May 25, 2021·2 cites·11 claims
- 0988US8947381B2Display deviceJIYAMA MOTOYA·Filed 2012·Granted Feb 3, 2015·56 cites·14 claims
- 1087US6807034B2Dual 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
- 1187US6764778B2Thin 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
- 1287US6714388B2Magnetic sensing element having improved magnetic sensitivityALPS ELECTRIC CO LTD·Filed 2002·Granted Mar 30, 2004·29 cites·36 claims
- 1385US10908233B2Magnetic detection device and method for manufacturing the sameALPS ALPINE CO LTD·Filed 2018·Granted Feb 2, 2021·2 cites·9 claims
- 1485US7268984B2Magnetic detecting element having a self-pinned layerALPS ELECTRIC CO LTD·Filed 2005·Granted Sep 11, 2007·6 cites·13 claims
- 1584US6783874B2Magnetic 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
- 1682US7029771B2Magnetic 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
- 1782US7002782B2Magnetic 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
- 1881US9644994B2Magnetic sensorALPS ELECTRIC CO LTD·Filed 2015·Granted May 9, 2017·3 cites·5 claims
- 1981US6901652B2Method for manufacturing magnetic sensing element having improved magnetic field sensitivityALPS ELECTRIC CO LTD·Filed 2002·Granted Jun 7, 2005·14 cites·46 claims
- 2080US7310208B2Magnetoresistive 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
- 2180US7126797B2Spin 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
- 2279US6856494B2Spin-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
- 2377US10267660B2Sensor deviceALPS ELECTRIC CO LTD·Filed 2017·Granted Apr 23, 2019·2 cites·9 claims
- 2477US6826022B2CPP type magnetic sensor or magnetic sensor using tunnel effect, and manufacturing method thereforALPS ELECTRIC CO LTD·Filed 2002·Granted Nov 30, 2004·20 cites·32 claims
- 2577US6504687B1Thin-film magnetic head having abrasion-resistant face opposing recording mediumALPS ELECTRIC CO LTD·Filed 2000·Granted Jan 7, 2003·13 cites·13 claims
- 2676US7092218B2Magnetic head comprising magnetic domain control layer formed on ABS-side of magnetic flux guide for GMR element and method of manufacturing the magnetic headALPS ELECTRIC CO LTD·Filed 2003·Granted Aug 15, 2006·10 cites·18 claims
- 2775US10254187B2Waterproof pressure sensor, and manufacturing method and sensor conveyance body for manufacturing waterproof pressureALPS ELECTRIC CO LTD·Filed 2016·Granted Apr 9, 2019·2 cites·12 claims
- 2875US8009391B2Magnetic sensing element and method for manufacturing the sameTDK CORP·Filed 2008·Granted Aug 30, 2011·8 cites·21 claims
- 2973US7005201B2Magnetic detecting elementALPS ELECTRIC CO LTD·Filed 2003·Granted Feb 28, 2006·9 cites·15 claims
- 3072US10466315B2Magnetic detection device including a bridge circuit and magnetoresistive elements provided on inclined surfaces of substrate recessesALPS ALPINE CO LTD·Filed 2018·Granted Nov 5, 2019·2 cites·9 claims
- 3172US7443635B2Magnetic detector including antiferromagnetic layer, amorphous barrier layer, base layer, and hard layer arranged in that order and method for manufacturing magnetic detectorALPS ELECTRIC CO LTD·Filed 2005·Granted Oct 28, 2008·4 cites·9 claims
- 3272US7365948B2Exchange-coupled film, method for making exchange-coupled film, and magnetic sensing element including exchange-coupled filmALPS ELECTRIC CO LTD·Filed 2004·Granted Apr 29, 2008·11 cites·10 claims
- 3371US6995961B2Magnetic sensing element comprising antiferromagnetic layer laminated on free magnetic layerALPS ELECTRIC CO LTD·Filed 2003·Granted Feb 7, 2006·15 cites·49 claims
- 3471US6831817B2Magnetic sensor having adjusted specific resistance distribution of first magnetic layer of free magnetic layer of multi-layered ferri-structureALPS ELECTRIC CO LTD·Filed 2002·Granted Dec 14, 2004·15 cites·62 claims
- 3570US7045224B2Magnetic detecting element having antiferromagnetic film having predetermined space in track width direction and method for manufacturing the sameALPS ELECTRIC CO LTD·Filed 2003·Granted May 16, 2006·14 cites·63 claims
- 3670US6893734B2Magnetic sensing element with improved sensitivity and method for making the sameALPS ELECTRIC CO LTD·Filed 2001·Granted May 17, 2005·15 cites·15 claims
- 3769US7312960B2Magnetic sensing element comprising a pinned magnetic layer, a free magnetic layer, and a nonmagnetic conductive layer disposed therebetweenALPS ELECTRIC CO LTD·Filed 2005·Granted Dec 25, 2007·2 cites·10 claims
- 3869US6870715B2Spin valve magnetoresistive head having a free layer contacted at each end by a ferromagnetic layer of a bias layerALPS ELECTRIC CO LTD·Filed 2001·Granted Mar 22, 2005·7 cites·3 claims
- 3969US2025172640A1Magnetic sensorALPS ALPINE CO LTD·Filed 2025·Application pending·0 cites
- 4068US6791320B2Magnetic detection device adapted to control magnetization of free magnetic layer by using antiferromagnetic layer, and manufacturing method for the sameALPS ELECTRIC CO LTD·Filed 2002·Granted Sep 14, 2004·6 cites·63 claims
- 4166US7969693B2Tunnel magnetoresistive sensor in which at least part of pinned layer is composed of CoFeB layer and method for manufacturing the tunnel magnetoresistive sensorALPS ELECTRIC CO LTD·Filed 2007·Granted Jun 28, 2011·3 cites·20 claims
- 4265US7839608B2Tunnel-type magnetic detecting device having laminated seed layerTDK CORP·Filed 2007·Granted Nov 23, 2010·4 cites·8 claims
- 4365US7075759B2Magnetic sensing element with free layer biasing using varying thickness nonmagnetic coupling layerALPS ELECTRIC CO LTD·Filed 2002·Granted Jul 11, 2006·11 cites·24 claims
- 4465US7008703B2Magnetic detecting element having second antiferromagnetic layer overlying second free magnetic layer extending in track width direction beyond track widthALPS ELECTRIC CO LTD·Filed 2003·Granted Mar 7, 2006·5 cites·19 claims
- 4565US6979500B2GMR magnetic sensing element provided with second free layer extended to outside of track width and method for manufacturing the sameALPS ELECTRIC CO LTD·Filed 2003·Granted Dec 27, 2005·11 cites·28 claims
- 4664US8820179B2Pressing force input deviceALPS ELECTRIC CO LTD·Filed 2012·Granted Sep 2, 2014·2 cites·4 claims
- 4764US7463026B2Magnetic sensor including bridge circuit having fixed resistance like structure of elementALPS ELECTRIC CO LTD·Filed 2007·Granted Dec 9, 2008·1 cites·7 claims
- 4864US7212383B2Magnetic sensing element including a pair of antiferromagnetic layers separated by spacer section in track width direction and method for fabricating sameALPS ELECTRIC CO LTD·Filed 2004·Granted May 1, 2007·5 cites·6 claims
- 4963US2024402267A1Magnetic sensorALPS ALPINE CO LTD·Filed 2024·Application pending·0 cites
- 5062US7102858B2Thin-film electrode layer including β-ta and thin-film magnetic head using the sameALPS ELECTRIC CO LTD·Filed 2003·Granted Sep 5, 2006·4 cites·7 claims
Showing the top 50 of 82 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →