Inventor · disambiguated record
Masatoshi Yoshikawa
Also filed as: YOSHIKAWA MASATOSHI
120 granted patents·26 pending applications·2,631 citations·filing 1996–2025
99Inventor score
Top patents by PatentIndex Score
146 records- 0199US6937446B2Magnetoresistance effect element, magnetic head and magnetic recording and/or reproducing systemTOSHIBA KK·Filed 2001·Granted Aug 30, 2005·124 cites·40 claims
- 0299US6338899B1Magnetoresistance effect element, magnetic head, magnetic head assembly, magnetic storage systemTOSHIBA KK·Filed 1999·Granted Jan 15, 2002·249 cites·35 claims
- 0398US7768824B2Magnetoresistive element and magnetoresistive random access memory including the sameTOSHIBA KK·Filed 2008·Granted Aug 3, 2010·58 cites·18 claims
- 0498US7663197B2Magnetoresistive elementTOSHIBA KK·Filed 2006·Granted Feb 16, 2010·97 cites·21 claims
- 0598US7596015B2Magnetoresistive element and magnetic memoryTOSHIBA KK·Filed 2007·Granted Sep 29, 2009·94 cites·23 claims
- 0698US7223485B2Magnetoresistive device, magnetoresistive head and magnetic recording-reproducing apparatusTOSHIBA KK·Filed 2005·Granted May 29, 2007·55 cites·18 claims
- 0797US8716818B2Magnetoresistive element and method of manufacturing the sameYOSHIKAWA MASATOSHI·Filed 2012·Granted May 6, 2014·49 cites·20 claims
- 0897US7379278B2Magnetoresistance 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
- 0997US7046489B2Magnetoresistance effect element, magnetic head and magnetic recording and/or reproducing systemTOSHIBA KK·Filed 2005·Granted May 16, 2006·63 cites·10 claims
- 1097US6784509B2Magnetoresistance effect element, magnetic head and magnetic reproducing apparatusTOSHIBA KK·Filed 2002·Granted Aug 31, 2004·76 cites·5 claims
- 1197US6303218B1Multi-layered thin-film functional device and magnetoresistance effect elementTOSHIBA KK·Filed 1999·Granted Oct 16, 2001·156 cites·30 claims
- 1296US12243572B2Magnetic memory deviceKIOXIA CORP·Filed 2023·Granted Mar 4, 2025·1 cites·20 claims
- 1396US8363462B2Magnetoresistive elementTOSHIBA KK·Filed 2011·Granted Jan 29, 2013·21 cites·23 claims
- 1496US7924607B2Magnetoresistance effect element and magnetoresistive random access memory using the sameTOSHIBA KK·Filed 2008·Granted Apr 12, 2011·38 cites·23 claims
- 1596US7038893B2Magnetoresistance 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
- 1696US6905780B2Current-perpendicular-to-plane-type magnetoresistive device, and magnetic head and magnetic recording-reproducing apparatus using the sameTOSHIBA KK·Filed 2002·Granted Jun 14, 2005·66 cites·18 claims
- 1796US6847509B2Magnetoresistive head and perpendicular magnetic recording-reproducing apparatusTOSHIBA KK·Filed 2002·Granted Jan 25, 2005·41 cites·12 claims
- 1896US6564445B1Magnetic head manufacturing methodTOSHIBA KK·Filed 2000·Granted May 20, 2003·68 cites·13 claims
- 1995US7957184B2Magnetoresistive element and magnetoresistive random access memory including the sameTOSHIBA KK·Filed 2010·Granted Jun 7, 2011·17 cites·33 claims
- 2095US7116529B2Magnetoresistive element in which pinned magnetization layers have antiparallel pinned directions, magnetic head and magnetic recording/reproducing apparatusTOSHIBA KK·Filed 2003·Granted Oct 3, 2006·60 cites·17 claims
- 2195US7072153B2Magnetoresistance 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
- 2295US6132892ASoft magnetic alloy film and manufacturing method thereof, and magnetic head incorporating the sameTOSHIBA KK·Filed 1998·Granted Oct 17, 2000·104 cites·24 claims
- 2394US9093632B2Nonvolatile semiconductor memory device and method of manufacturing the sameTSUBATA SHUICHI·Filed 2014·Granted Jul 28, 2015·21 cites·9 claims
- 2494US8299552B2Magnetoresistive element and magnetic memoryNAGASE TOSHIHIKO·Filed 2008·Granted Oct 30, 2012·33 cites·18 claims
- 2594US7375405B2Magnetoresistance 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
- 2694US7196877B2Magnetoresistive element, magnetoresistive head and magnetic reproducing apparatusTOSHIBA KK·Filed 2003·Granted Mar 27, 2007·48 cites·19 claims
- 2794US7008702B2Magnetoresistance effect element, magnetic head, magnetic head assembly, magnetic storage systemTOSHIBA KK·Filed 2001·Granted Mar 7, 2006·38 cites·21 claims
- 2894US6495275B2Multi-layered thin-film functional device and magnetoresistance effect elementTOSHIBA KK·Filed 2001·Granted Dec 17, 2002·68 cites·9 claims
- 2993US8139405B2Magnetoresistive element and magnetoresistive random access memory including the sameYOSHIKAWA MASATOSHI·Filed 2011·Granted Mar 20, 2012·13 cites·15 claims
- 3093US8107281B2Magnetoresistive element and magnetic memoryKAI TADASHI·Filed 2010·Granted Jan 31, 2012·23 cites·12 claims
- 3193US8098514B2Magnetoresistive element and magnetic memoryNAGASE TOSHIHIKO·Filed 2008·Granted Jan 17, 2012·49 cites·24 claims
- 3293US7897274B2Magnetoresistive device, magnetoresistive head and magnetic recording-reproducing apparatusTOSHIBA KK·Filed 2007·Granted Mar 1, 2011·19 cites·2 claims
- 3392US9508922B2Magnetic memory device and method of manufacturing the sameYOSHIKAWA MASATOSHI·Filed 2015·Granted Nov 29, 2016·9 cites·25 claims
- 3492US8218355B2Magnetoresistive element and magnetic memoryKITAGAWA EIJI·Filed 2009·Granted Jul 10, 2012·23 cites·25 claims
- 3592US7920361B2Magnetoresistive effect element with intermediate oxide layer containing boron and an element selected from Ca, Mg, Sr, Ba, Ti, and ScTOSHIBA KK·Filed 2007·Granted Apr 5, 2011·23 cites·26 claims
- 3691US10461245B2Magnetic memory device and method of manufacturing the sameTOSHIBA MEMORY CORP·Filed 2015·Granted Oct 29, 2019·8 cites·12 claims
- 3791US9893121B2Magnetic memory and method of manufacturing magnetic memoryTOSHIBA MEMORY CORP·Filed 2016·Granted Feb 13, 2018·8 cites·18 claims
- 3891US8154915B2Magnetoresistive element and magnetoresistive random access memory including the sameYOSHIKAWA MASATOSHI·Filed 2011·Granted Apr 10, 2012·11 cites·54 claims
- 3991US7791843B2Magnetoresistance effect element, magnetic head and magnetic recording and/or reproducing systemTOSHIBA KK·Filed 2009·Granted Sep 7, 2010·7 cites·11 claims
- 4091US7190558B2Magnetoresistive effect element, magnetic head and magnetic reproducing apparatusTOSHIBA KK·Filed 2002·Granted Mar 13, 2007·31 cites·11 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
- 4389US9570671B2Magnetic memory deviceYOSHIKAWA MASATOSHI·Filed 2014·Granted Feb 14, 2017·5 cites·10 claims
- 4489US8531875B2Magnetic memoryYANAGI SATOSHI·Filed 2012·Granted Sep 10, 2013·9 cites·9 claims
- 4589US8208292B2Magnetoresistive element and magnetic memoryKAI TADASHI·Filed 2012·Granted Jun 26, 2012·13 cites·15 claims
- 4689US6724582B2Current perpendicular to plane type magnetoresistive device, magnetic head, and magnetic recording/reproducing apparatusTOSHIBA KK·Filed 2002·Granted Apr 20, 2004·25 cites·20 claims
- 4789US6636390B2Magnetic head and magnetic recording and reproducing systemTOSHIBA KK·Filed 2001·Granted Oct 21, 2003·32 cites·19 claims
- 4888US10304509B2Magnetic storage deviceTOSHIBA MEMORY CORP·Filed 2017·Granted May 28, 2019·6 cites·19 claims
- 4988US8956882B1Method of manufacturing magnetoresistive elementTOMIOKA KAZUHIRO·Filed 2014·Granted Feb 17, 2015·7 cites·20 claims
- 5088US8895162B2Magnetoresistive element and magnetic memoryNISHIYAMA KATSUYA·Filed 2011·Granted Nov 25, 2014·13 cites·7 claims
Showing the top 50 of 146 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →