Inventor · disambiguated record
Akira Sakawaki
Also filed as: SAKAWAKI AKIRA
60 granted patents·33 pending applications·444 citations·filing 1999–2023
98Inventor score
Top patents by PatentIndex Score
93 records- 0195US7470474B2Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatus including both oxide and non-oxide perpendicular magnetic layersTOSHIBA KK·Filed 2004·Granted Dec 30, 2008·48 cites·16 claims
- 0292US6699600B2Magnetic recording medium, method of manufacture therefor, and apparatus for magnetic recording and reproducing recordingsSHOWA DENKO KK·Filed 2002·Granted Mar 2, 2004·38 cites·16 claims
- 0392US6682826B2Magnetic recording medium, method of manufacturing therefor, and magnetic read/write apparatusSHOWA DENKO KK·Filed 2002·Granted Jan 27, 2004·40 cites·14 claims
- 0491US11733319B2Magnetic sensorSHOWA DENKO KK·Filed 2022·Granted Aug 22, 2023·2 cites·14 claims
- 0591US8048323B2Method for manufacturing magnetic recording medium and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2007·Granted Nov 1, 2011·11 cites·8 claims
- 0689US6818331B2Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2002·Granted Nov 16, 2004·27 cites·12 claims
- 0788US7166376B2Magnetic recording medium including a high-magnetostriction layer and magnetic recording/reproducing apparatusTOSHIBA KK·Filed 2004·Granted Jan 23, 2007·23 cites·15 claims
- 0887US7867638B2Magnetic recording medium, method for producing thereof, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2008·Granted Jan 11, 2011·6 cites·12 claims
- 0987US7083870B2Magnetic recording medium, method of manufacturing the same, and magnetic recording and reproduction apparatusTOSHIBA KK·Filed 2003·Granted Aug 1, 2006·22 cites·7 claims
- 1087US6761982B2Magnetic recording medium, production process and apparatus thereof, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2001·Granted Jul 13, 2004·23 cites·30 claims
- 1183US6677061B2Magnetic recording medium, production process thereof, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2002·Granted Jan 13, 2004·17 cites·21 claims
- 1282US7106539B2Perpendicular magnetic recording apparatusTOSHIBA KK·Filed 2005·Granted Sep 12, 2006·5 cites·13 claims
- 1382US6808830B2Magnetic recording medium, production process and apparatus thereof, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2002·Granted Oct 26, 2004·15 cites·33 claims
- 1480US7105239B2Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus using the sameSHOWA DENKO KK·Filed 2002·Granted Sep 12, 2006·13 cites·20 claims
- 1578US8263190B2Method of producing magnetic recording medium, and magnetic recording and reading deviceFUKUSHIMA MASATO·Filed 2008·Granted Sep 11, 2012·3 cites·13 claims
- 1678US8158215B2Magnetic recording media and method of manufacturing the same, and magnetic recording/reproduction deviceFUKUSHIMA MASATO·Filed 2007·Granted Apr 17, 2012·3 cites·4 claims
- 1778US7132176B2Perpendicular magnetic recording medium and magnetic recording/reproduction apparatusSHOWA DENKO KK·Filed 2003·Granted Nov 7, 2006·12 cites·18 claims
- 1877US6942936B2Perpendicular magnetic recording medium and magnetic recording/reproduction apparatusSHOWA DENKO KK·Filed 2003·Granted Sep 13, 2005·11 cites·22 claims
- 1976US6884519B2Magnetic recording medium, including an HCP structured Ni-alloy control film method of manufacture therefor, and magnetic read/write apparatusTOSHIBA CORP·Filed 2002·Granted Apr 26, 2005·11 cites·10 claims
- 2075US8213118B2Magnetic recording medium, method for production thereof and magnetic recording and reproducing deviceFUKUSHIMA MASATO·Filed 2007·Granted Jul 3, 2012·2 cites·1 claims
- 2175US7601445B2Perpendicular magnetic recording medium and magnetic recording/reproducing apparatusSHOWA DENKO KK·Filed 2004·Granted Oct 13, 2009·10 cites·11 claims
- 2274US8389048B2Magnetic recording medium, method for production thereof and magnetic recording and reproducing deviceFUKUSHIMA MASATO·Filed 2007·Granted Mar 5, 2013·2 cites·5 claims
- 2374US7141316B2Perpendicular magnetic recording medium and magnetic recording/reproducing apparatusSHOWA DENKO KK·Filed 2004·Granted Nov 28, 2006·9 cites·13 claims
- 2473US8336193B2Process for making magnetic recording medium and magnetic recording-reproducing apparatusFUKUSHIMA MASATO·Filed 2008·Granted Dec 25, 2012·2 cites·7 claims
- 2572US9013832B2Perpendicular magnetic recording medium and magnetic storage apparatusSHOWA DENKO KK·Filed 2014·Granted Apr 21, 2015·2 cites·10 claims
- 2672US8139303B2Method for production of magnetic recording medium, magnetic recording medium and magnetic recording and reproduction deviceSAKAWAKI AKIRA·Filed 2007·Granted Mar 20, 2012·3 cites·8 claims
- 2772US6902835B2Perpendicular magnetic recording medium and magnetic recording apparatusSHOWA DENKO KK·Filed 2003·Granted Jun 7, 2005·8 cites·24 claims
- 2871US11561266B2Magnetic sensorSHOWA DENKO KK·Filed 2021·Granted Jan 24, 2023·0 cites·7 claims
- 2971US9224414B2Method for manufacture of magnetic recording medium and magnetic recording and reproduction deviceFUKUSHIMA MASATO·Filed 2007·Granted Dec 29, 2015·2 cites·9 claims
- 3070US8315018B2Magnetic recording medium, method of manufacturing magnetic recording medium, and magnetic recording/reproducing apparatusFUKUSHIMA MASATO·Filed 2009·Granted Nov 20, 2012·1 cites·7 claims
- 3169US11686786B2Magnetic sensorSHOWA DENKO KK·Filed 2021·Granted Jun 27, 2023·0 cites·7 claims
- 3268US12442873B2Magnetic sensor, method of manufacturing magnetic sensor, and sensitive element assemblyRESONAC CORP·Filed 2023·Granted Oct 14, 2025·0 cites·12 claims
- 3368US7138194B2Magnetic recording medium, method of manufacture therefor, and magnetic read/write apparatusTOSHIBA KK·Filed 2003·Granted Nov 21, 2006·6 cites·15 claims
- 3466US8790525B2Method of manufacturing magnetic recording medium, and magnetic recording and reproducing deviceSHOWA DENKO KK·Filed 2013·Granted Jul 29, 2014·2 cites·6 claims
- 3565US7289298B2Perpendicular magnetic recording medium, method for manufacturing the same, and magnetic recording/reproducing apparatusSHOWA DENKO KK·Filed 2004·Granted Oct 30, 2007·5 cites·10 claims
- 3665US7056606B2Magnetic recording medium, method manufacture therefor, and apparatus for magnetic reproducing and reproducing recordingsTOSHIBA KK·Filed 2004·Granted Jun 6, 2006·5 cites·4 claims
- 3763US11821963B2Magnetic sensorSHOWA DENKO KK·Filed 2022·Granted Nov 21, 2023·0 cites·10 claims
- 3863US6680133B2Magnetic recording medium and sputtering targetSHOWA DENKO KK·Filed 2000·Granted Jan 20, 2004·5 cites·7 claims
- 3960US8551349B2Method for producing magnetic recording medium, and magnetic recording/reproducing apparatusFUKUSHIMA MASATO·Filed 2008·Granted Oct 8, 2013·2 cites·8 claims
- 4059US7141315B2Magnetic recording medium, method of manufacturing the same, and magnetic recording and reproduction apparatusTOSHIBA KK·Filed 2003·Granted Nov 28, 2006·3 cites·17 claims
- 4158US8414967B2Process for producing magnetic recording medium and magnetic recording and reproducing apparatusFUKUSHIMA MASATO·Filed 2009·Granted Apr 9, 2013·1 cites·10 claims
- 4258US6723458B2Magnetic recording medium, method of manufacture therefor, and magnetic read/write apparatusSHOWA DENKO KK·Filed 2002·Granted Apr 20, 2004·14 cites·7 claims
- 4357US8394514B2Method for producing magnetic recording medium and magnetic recording/reproducing apparatusFUKUSHIMA MASATO·Filed 2008·Granted Mar 12, 2013·0 cites·8 claims
- 4457US6686072B2Magnetic recording medium, process and apparatus for producing the same, and magnetic recording and reproducing apparatusSHOWA DENKO KK·Filed 2001·Granted Feb 3, 2004·3 cites·21 claims
- 4557US6274233B1Magnetic recording mediumSHOWA DENKO KK·Filed 1999·Granted Aug 14, 2001·18 cites·20 claims
- 4656US12032043B2Magnetic sensorSHOWA DENKO KK·Filed 2021·Granted Jul 9, 2024·0 cites·4 claims
- 4755US12248037B2Magnetic sensorSHOWA DENKO KK·Filed 2020·Granted Mar 11, 2025·0 cites·6 claims
- 4855US6582758B2Process of producing a magnetic recording mediumSHOWA DENKO KK·Filed 2001·Granted Jun 24, 2003·5 cites·14 claims
- 4955US2010149680A1Method of manufacturing magnetic recording medium, magnetic recording medium, and magnetic recording reproducing apparatusSHOWA DENKO KK·Filed 2009·Application pending·0 cites
- 5054US7781081B2Magnetic recording medium, manufacturing method for the magnetic recording medium, and magnetic read/write apparatusSHOWA DENKO KK·Filed 2004·Granted Aug 24, 2010·1 cites·16 claims
Showing the top 50 of 93 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →