Inventor
UMETSU EIJI
JP66 patents
⚠️ This page may combine multiple inventors who share the name “UMETSU EIJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALPS ELECTRIC CO LTD
42 patentsUS7220499B2May 22, 2007
CPP giant magnetoresistive head having antiferromagnetic film disposed in rear of element
ALPS ELECTRIC CO LTD51 citations93
US7126797B2Oct 24, 2006
Spin valve magnetoresistive element having pinned magnetic layer composed of epitaxial laminated film having magnetic sublayers and nanomagnetic interlayer
ALPS ELECTRIC CO LTD23 citations93
US6826022B2Nov 30, 2004
CPP type magnetic sensor or magnetic sensor using tunnel effect, and manufacturing method therefor
ALPS ELECTRIC CO LTD20 citations93
US6807034B2Oct 19, 2004
Dual spin-valve CCP type thin-film magnetic element with multi free layers
ALPS ELECTRIC CO LTD36 citations93
US6764778B2Jul 20, 2004
Thin film magnetic element with accurately controllable track width and method of manufacturing the same
ALPS ELECTRIC CO LTD30 citations93
US6714388B2Mar 30, 2004
Magnetic sensing element having improved magnetic sensitivity
ALPS ELECTRIC CO LTD29 citations93
US7433161B2Oct 7, 2008
Spin-valve element having fixed layer containing nano-oxide layer
ALPS ELECTRIC CO LTD43 citations92
US9063599B2Jun 23, 2015
Input device and display apparatus
ALPS ELECTRIC CO LTD24 citations91
US9664576B2May 30, 2017
Load detector and electronic unit using the same
ALPS ELECTRIC CO LTD10 citations84
US7075759B2Jul 11, 2006
Magnetic sensing element with free layer biasing using varying thickness nonmagnetic coupling layer
ALPS ELECTRIC CO LTD11 citations84
US7045224B2May 16, 2006
Magnetic detecting element having antiferromagnetic film having predetermined space in track width direction and method for manufacturing the same
ALPS ELECTRIC CO LTD14 citations84
US7029771B2Apr 18, 2006
Magnetic sensor having free layer additionally provided with magnetic anisotropy by shape anisotropy
ALPS ELECTRIC CO LTD19 citations84
US7002782B2Feb 21, 2006
Magnetic 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 same
ALPS ELECTRIC CO LTD15 citations84
US6995961B2Feb 7, 2006
Magnetic sensing element comprising antiferromagnetic layer laminated on free magnetic layer
ALPS ELECTRIC CO LTD15 citations84
US6901652B2Jun 7, 2005
Method for manufacturing magnetic sensing element having improved magnetic field sensitivity
ALPS ELECTRIC CO LTD14 citations84
US6893734B2May 17, 2005
Magnetic sensing element with improved sensitivity and method for making the same
ALPS ELECTRIC CO LTD15 citations84
US6856494B2Feb 15, 2005
Spin-valve type thin film magnetic element having bias layers and ferromagnetic layers
ALPS ELECTRIC CO LTD14 citations84
US6831817B2Dec 14, 2004
Magnetic sensor having adjusted specific resistance distribution of first magnetic layer of free magnetic layer of multi-layered ferri-structure
ALPS ELECTRIC CO LTD15 citations84
US6783874B2Aug 31, 2004
Magnetic sensor having second antiferromagnetic layers and two types of electrode layers on free magnetic layer and manufacturing method thereof
ALPS ELECTRIC CO LTD19 citations84
US6504687B1Jan 7, 2003
Thin-film magnetic head having abrasion-resistant face opposing recording medium
ALPS ELECTRIC CO LTD13 citations82
US6346338B1Feb 12, 2002
Combination magnetoresistive/inductive thin film magnetic head and its manufacturing method
ALPS ELECTRIC CO LTD13 citations82
US7365948B2Apr 29, 2008
Exchange-coupled film, method for making exchange-coupled film, and magnetic sensing element including exchange-coupled film
ALPS ELECTRIC CO LTD11 citations81
US7092218B2Aug 15, 2006
Magnetic head comprising magnetic domain control layer formed on ABS-side of magnetic flux guide for GMR element and method of manufacturing the magnetic head
ALPS ELECTRIC CO LTD10 citations74
US7005201B2Feb 28, 2006
Magnetic detecting element
ALPS ELECTRIC CO LTD9 citations74
US6979500B2Dec 27, 2005
GMR magnetic sensing element provided with second free layer extended to outside of track width and method for manufacturing the same
ALPS ELECTRIC CO LTD11 citations74
US6870715B2Mar 22, 2005
Spin valve magnetoresistive head having a free layer contacted at each end by a ferromagnetic layer of a bias layer
ALPS ELECTRIC CO LTD7 citations74
US6150046ANov 21, 2000
Combination magnetoresistive/inductive thin film magnetic head and its manufacturing method
ALPS ELECTRIC CO LTD9 citations74
US6036825AMar 14, 2000
Magnetic film forming method
ALPS ELECTRIC CO LTD7 citations74
US10267660B2Apr 23, 2019
Sensor device
ALPS ELECTRIC CO LTD2 citations73
US10254187B2Apr 9, 2019
Waterproof pressure sensor, and manufacturing method and sensor conveyance body for manufacturing waterproof pressure
ALPS ELECTRIC CO LTD2 citations72
US9644994B2May 9, 2017
Magnetic sensor
ALPS ELECTRIC CO LTD3 citations71
US7969693B2Jun 28, 2011
Tunnel magnetoresistive sensor in which at least part of pinned layer is composed of CoFeB layer and method for manufacturing the tunnel magnetoresistive sensor
ALPS ELECTRIC CO LTD3 citations63
US7443635B2Oct 28, 2008
Magnetic detector including antiferromagnetic layer, amorphous barrier layer, base layer, and hard layer arranged in that order and method for manufacturing magnetic detector
ALPS ELECTRIC CO LTD4 citations63
US7362546B2Apr 22, 2008
Spin-valve magnetoresistive element having fixed magnetic layer of epitaxal laminate including magnetic layer and nonmagnetic layer
ALPS ELECTRIC CO LTD4 citations63
US7310208B2Dec 18, 2007
Magnetoresistive sensor containing self-pinned layer containing a plurality of magnetic sublayers with magnetostriction-enhancing layer made of a nonmagnetic material
ALPS ELECTRIC CO LTD4 citations63
US7268984B2Sep 11, 2007
Magnetic detecting element having a self-pinned layer
ALPS ELECTRIC CO LTD6 citations63
US7212383B2May 1, 2007
Magnetic sensing element including a pair of antiferromagnetic layers separated by spacer section in track width direction and method for fabricating same
ALPS ELECTRIC CO LTD5 citations63
US7106560B2Sep 12, 2006
Magnetic sensor with second antiferromagnetic layer having smaller depth in height direction than free layer
ALPS ELECTRIC CO LTD5 citations63
US7008703B2Mar 7, 2006
Magnetic detecting element having second antiferromagnetic layer overlying second free magnetic layer extending in track width direction beyond track width
ALPS ELECTRIC CO LTD5 citations63
US6921587B2Jul 26, 2005
Magnetic sensing element including second free magnetic layer extending wider than track width and method for fabricating same
ALPS ELECTRIC CO LTD4 citations63
US6885528B2Apr 26, 2005
Magnetic sensing element having chromium layer between antiferromagnetic layers
ALPS ELECTRIC CO LTD6 citations63
US6791320B2Sep 14, 2004
Magnetic detection device adapted to control magnetization of free magnetic layer by using antiferromagnetic layer, and manufacturing method for the same
ALPS ELECTRIC CO LTD6 citations63
TDK CORP
3 patentsUS7599155B2Oct 6, 2009
Self-pinned CPP giant magnetoresistive head with antiferromagnetic film absent from current path
TDK CORP23 citations93
US7800867B2Sep 21, 2010
CPP GMR head with antiferromagnetic layer disposed at rear of ferrimagnetic pinned layer
TDK CORP15 citations84
US8009391B2Aug 30, 2011
Magnetic sensing element and method for manufacturing the same
TDK CORP8 citations82
ALPS ALPINE CO LTD
3 patentsUS10908233B2Feb 2, 2021
Magnetic detection device and method for manufacturing the same
ALPS ALPINE CO LTD2 citations73
US10466315B2Nov 5, 2019
Magnetic detection device including a bridge circuit and magnetoresistive elements provided on inclined surfaces of substrate recesses
ALPS ALPINE CO LTD2 citations73
US11015992B2May 25, 2021
Load sensor unit and input device
ALPS ALPINE CO LTD2 citations72
JIYAMA MOTOYA
1 patentUMETSU EIJI
1 patentShowing the top 50 of 66 patents by PatentIndex Score.