Inventor · disambiguated record
Katsuhiko Koui
Also filed as: FUKUZAWA HIDEAKI · KOUI KATSUHIKO
104 granted patents·19 pending applications·2,092 citations·filing 1999–2021
99Inventor score
Top patents by PatentIndex Score
123 records- 0199US10186284B2Magnetic head and magnetic recording and reproducing deviceTOSHIBA KK·Filed 2017·Granted Jan 22, 2019·82 cites·19 claims
- 0299US8064244B2Thin seeded Co/Ni multilayer film with perpendicular anisotropy for spintronic device applicationsZHANG KUNLIANG·Filed 2009·Granted Nov 22, 2011·102 cites·29 claims
- 0399US6937446B2Magnetoresistance effect element, magnetic head and magnetic recording and/or reproducing systemTOSHIBA KK·Filed 2001·Granted Aug 30, 2005·124 cites·40 claims
- 0499US6338899B1Magnetoresistance effect element, magnetic head, magnetic head assembly, magnetic storage systemTOSHIBA KK·Filed 1999·Granted Jan 15, 2002·249 cites·35 claims
- 0597US9196271B1Spin-torque oscillation element and microwave-assisted magnetic recording head using the sameTOSHIBA KK·Filed 2015·Granted Nov 24, 2015·31 cites·10 claims
- 0697US8320079B2Magnetic head assembly and magnetic recording/reproducing apparatusIWASAKI HITOSHI·Filed 2009·Granted Nov 27, 2012·72 cites·7 claims
- 0797US7525776B2Magnetoresistive element, magnetoresistive head, magnetic recording apparatus, and magnetic memoryTOSHIBA KK·Filed 2005·Granted Apr 28, 2009·39 cites·19 claims
- 0897US7514117B2Method and apparatus for manufacturing magnetoresistive elementTOSHIBA KK·Filed 2005·Granted Apr 7, 2009·45 cites·25 claims
- 0997US7379278B2Magnetoresistance effect element, having a nonmagnetic intermediate layer having a two-dimensional fluctuation of resistanceTOSHIBA KK·Filed 2006·Granted May 27, 2008·34 cites·20 claims
- 1097US7046489B2Magnetoresistance effect element, magnetic head and magnetic recording and/or reproducing systemTOSHIBA KK·Filed 2005·Granted May 16, 2006·63 cites·10 claims
- 1197US6784509B2Magnetoresistance effect element, magnetic head and magnetic reproducing apparatusTOSHIBA KK·Filed 2002·Granted Aug 31, 2004·76 cites·5 claims
- 1297US6313973B1Laminated magnetorestrictive element of an exchange coupling film, an antiferromagnetic film and a ferromagnetic film and a magnetic disk drive using sameTOSHIBA KK·Filed 1999·Granted Nov 6, 2001·140 cites·24 claims
- 1397US6303218B1Multi-layered thin-film functional device and magnetoresistance effect elementTOSHIBA KK·Filed 1999·Granted Oct 16, 2001·156 cites·30 claims
- 1496US9218828B1Magnetic head and magnetic recording/reproducing apparatusTOSHIBA KK·Filed 2015·Granted Dec 22, 2015·23 cites·6 claims
- 1596US8824104B1Magnetic head and magnetic recording/reproducing deviceTOSHIBA KK·Filed 2013·Granted Sep 2, 2014·35 cites·6 claims
- 1696US8472140B2Spin oscillator or magnetic recorder including multiple injection layers in the magnetic recording headYAMADA KENICHIRO·Filed 2012·Granted Jun 25, 2013·24 cites·11 claims
- 1796US7038893B2Magnetoresistance effect element having a nonmagnetic intermediate layer having a two-dimensional fluctuation of resistanceTOSHIBA KK·Filed 2005·Granted May 2, 2006·25 cites·17 claims
- 1895US9691415B2Measurement circuit for microwave assisted magnetic recordingTOSHIBA KK·Filed 2016·Granted Jun 27, 2017·18 cites·7 claims
- 1995US8488373B2Spin injection layer robustness for microwave assisted magnetic recordingZHANG KUNLIANG·Filed 2011·Granted Jul 16, 2013·24 cites·23 claims
- 2095US8325442B2Spin torque oscillator, magnetic recording head, magnetic head assembly and magnetic recording apparatusKOUI KATSUHIKO·Filed 2009·Granted Dec 4, 2012·31 cites·17 claims
- 2195US8081397B2Magnetic head assembly and magnetic recording apparatusFUNAYAMA TOMOMI·Filed 2009·Granted Dec 20, 2011·30 cites·21 claims
- 2295US7072153B2Magnetoresistance effect element having a nonmagnetic intermediate layer having a two-dimensional fluctuation of resistanceTOSHIBA KK·Filed 2003·Granted Jul 4, 2006·35 cites·16 claims
- 2394US10211394B1Magnetic memoryTOSHIBA KK·Filed 2018·Granted Feb 19, 2019·16 cites·13 claims
- 2494US7375405B2Magnetoresistance effect element, magnetic head, and magnetic storage system using a giant magnetoresistance effect elementTOSHIBA KK·Filed 2005·Granted May 20, 2008·14 cites·3 claims
- 2594US7008702B2Magnetoresistance effect element, magnetic head, magnetic head assembly, magnetic storage systemTOSHIBA KK·Filed 2001·Granted Mar 7, 2006·38 cites·21 claims
- 2694US6495275B2Multi-layered thin-film functional device and magnetoresistance effect elementTOSHIBA KK·Filed 2001·Granted Dec 17, 2002·68 cites·9 claims
- 2793US9792933B2Magnetic head, disk drive with the same and method of manufacturing magnetic headTOSHIBA KK·Filed 2015·Granted Oct 17, 2017·16 cites·6 claims
- 2893US8467148B2Spin torque oscillator, magnetic recording head, magnetic head assembly and magnetic recording apparatusIWASAKI HITOSHI·Filed 2009·Granted Jun 18, 2013·16 cites·13 claims
- 2992US9679587B2High frequency assisted magnetic recording head and disk device comprising the magnetic recording headTOSHIBA KK·Filed 2015·Granted Jun 13, 2017·14 cites·18 claims
- 3092US8953283B2Magnetic head, magnetic head assembly, and magnetic recording/reproduction apparatusTOSHIBA KK·Filed 2013·Granted Feb 10, 2015·12 cites·10 claims
- 3192US8467149B2Spin torque oscillator and magnetic recording apparatusTAKEO AKIHIKO·Filed 2011·Granted Jun 18, 2013·23 cites·12 claims
- 3292US8238058B2Magnetic recording head, magnetic head assembly, and magnetic recording apparatusSHIMIZU MARIKO·Filed 2011·Granted Aug 7, 2012·23 cites·20 claims
- 3392US7525772B2Magnetoresistive device, magnetic reproducing head, and magnetic information reproducing apparatusTOSHIBA KK·Filed 2006·Granted Apr 28, 2009·14 cites·11 claims
- 3491US8169741B2Perpendicular magnetic recording head with side shield and magnetic disk apparatusTAGUCHI TOMOKO·Filed 2007·Granted May 1, 2012·11 cites·5 claims
- 3591US7791843B2Magnetoresistance effect element, magnetic head and magnetic recording and/or reproducing systemTOSHIBA KK·Filed 2009·Granted Sep 7, 2010·7 cites·11 claims
- 3691US7190558B2Magnetoresistive effect element, magnetic head and magnetic reproducing apparatusTOSHIBA KK·Filed 2002·Granted Mar 13, 2007·31 cites·11 claims
- 3790US10170694B1Magnetic memoryTOSHIBA KK·Filed 2018·Granted Jan 1, 2019·10 cites·9 claims
- 3890US9076463B2Magnetic recording head and disk device with the sameTOSHIBA KK·Filed 2013·Granted Jul 7, 2015·11 cites·18 claims
- 3990US8724262B1Magnetic head and magnetic recording/reproduction apparatus that decreases oscillation driving voltage of a spin torque oscillation elementTOSHIBA KK·Filed 2013·Granted May 13, 2014·11 cites·6 claims
- 4090US8446691B2Magnetic recording deviceTAKAGISHI MASAYUKI·Filed 2012·Granted May 21, 2013·16 cites·20 claims
- 4190US7218483B2Magnetoresistive effect element, magnetic head and magnetic reproducing apparatusTOSHIBA KK·Filed 2002·Granted May 15, 2007·26 cites·16 claims
- 4290US7071522B2Magnetoresistance effect element, magnetic head and magnetic reproducing apparatusTOSHIBA KK·Filed 2004·Granted Jul 4, 2006·25 cites·7 claims
- 4389US8922949B1Magnetic recording head and magnetic recording/reproducing apparatus using the sameTOSHIBA KK·Filed 2013·Granted Dec 30, 2014·11 cites·30 claims
- 4488US9792930B1Microwave-assisted magnetic recording head and magnetic recording and reproducing deviceTOSHIBA KK·Filed 2017·Granted Oct 17, 2017·8 cites·20 claims
- 4588US8027118B2Method and apparatus for controlling head with spin-torque oscillator in a disk driveTOSHIBA KK·Filed 2010·Granted Sep 27, 2011·11 cites·14 claims
- 4688US7738220B1Magnetoresistance effect element, magnetic head, magnetic head assembly, magnetic storage systemTOSHIBA KK·Filed 2007·Granted Jun 15, 2010·15 cites·5 claims
- 4786US10026465B2Nonvolatile memoryTOSHIBA KK·Filed 2017·Granted Jul 17, 2018·6 cites·20 claims
- 4886US7443004B2Magnetoresistance effect element, magnetic head and magnetic reproducing apparatusTOSHIBA KK·Filed 2005·Granted Oct 28, 2008·10 cites·10 claims
- 4986US7218484B2Magnetoresistance effect element, magnetic head, and magnetic reproducing apparatusTOSHIBA KK·Filed 2003·Granted May 15, 2007·28 cites·12 claims
- 5085US8929031B2Spin torque oscillator, method of manufacturing the same, magnetic recording head, magnetic head assembly, and magnetic recording apparatusTAKEO AKIHIKO·Filed 2011·Granted Jan 6, 2015·5 cites·9 claims
Showing the top 50 of 123 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →