Inventor · disambiguated record
Akihiko Takeo
Also filed as: TAKEO AKIHIKO
66 granted patents·23 pending applications·536 citations·filing 2001–2022
98Inventor score
Top patents by PatentIndex Score
89 records- 0199US10236021B2Magnetic recording apparatus having magnetic flux control part and magnetic recording head having magnetic flux control partTOSHIBA KK·Filed 2017·Granted Mar 19, 2019·82 cites·20 claims
- 0298US10276193B2Magnetic head having magnetic pole and shield, and magnetic recording and reproducing deviceTOSHIBA KK·Filed 2018·Granted Apr 30, 2019·83 cites·18 claims
- 0398US7791829B2Apparatus for assisting write operation using high frequency magnetic field in disk driveTOSHIBA KK·Filed 2008·Granted Sep 7, 2010·65 cites·12 claims
- 0496US6999257B2Magnetic disk drive with structure for avoiding DC magnetic disturbance on a disk surfaceTOSHIBA KK·Filed 2002·Granted Feb 14, 2006·69 cites·2 claims
- 0593US11120822B2Magnetic disk drive and head adjusting methodTOSHIBA KK·Filed 2020·Granted Sep 14, 2021·5 cites·19 claims
- 0692US9870786B2Method of manufacturing magnetic recording headTOSHIBA KK·Filed 2015·Granted Jan 16, 2018·12 cites·18 claims
- 0792US8467149B2Spin torque oscillator and magnetic recording apparatusTAKEO AKIHIKO·Filed 2011·Granted Jun 18, 2013·23 cites·12 claims
- 0891US11887633B2Magnetic disk deviceTOSHIBA KK·Filed 2022·Granted Jan 30, 2024·3 cites·14 claims
- 0990US9076463B2Magnetic recording head and disk device with the sameTOSHIBA KK·Filed 2013·Granted Jul 7, 2015·11 cites·18 claims
- 1089US10672419B1Magnetic recording and reading apparatus and magnetic recording methodTOSHIBA KK·Filed 2019·Granted Jun 2, 2020·9 cites·20 claims
- 1189US7023634B2Data channel for processing user data and servo data in a disk drive adopting perpendicular magnetic recording systemTOSHIBA KK·Filed 2002·Granted Apr 4, 2006·25 cites·2 claims
- 1289US6618227B2Combination perpendicular record and reproduce head having an auxiliary pole recessed from an air bearing surface and spaced from one of a pair of reproducing element sheildsTOSHIBA KK·Filed 2001·Granted Sep 9, 2003·27 cites·9 claims
- 1388US8685491B2Method of manufacturing magnetoresistive elementTAKEO AKIHIKO·Filed 2011·Granted Apr 1, 2014·7 cites·13 claims
- 1485US8929031B2Spin 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
- 1585US6707643B2Perpendicular magnetic recording head having narrow recording gap and perpendicular magnetic recording apparatus using the sameTOSHIBA KK·Filed 2001·Granted Mar 16, 2004·19 cites·15 claims
- 1684US11114127B2Magnetic disk device having first and second assist elements and write operation methodTOSHIBA KK·Filed 2020·Granted Sep 7, 2021·2 cites·15 claims
- 1784US8467150B2Recording head, disk drive with recording head, and recording method using recording headTAKEO AKIHIKO·Filed 2012·Granted Jun 18, 2013·7 cites·18 claims
- 1883US9224413B2Magnetic recording medium and method of manufacturing the sameTOSHIBA KK·Filed 2013·Granted Dec 29, 2015·5 cites·2 claims
- 1983US8553359B2Magnetic recording head and magnetic recording/reproducing apparatus using the sameYAMADA KENICHIRO·Filed 2010·Granted Oct 8, 2013·7 cites·11 claims
- 2082US9111552B1High-frequency oscillation device, magnetic recording head including the same, and disk deviceTOSHIBA KK·Filed 2014·Granted Aug 18, 2015·7 cites·19 claims
- 2182US8233230B2Method and apparatus for controlling head with spin-torque oscillator in a disk driveYANO KOJI·Filed 2010·Granted Jul 31, 2012·6 cites·13 claims
- 2282US8203804B2Head gimbal assembly and disk drive with the sameTAGUCHI TOMOKO·Filed 2011·Granted Jun 19, 2012·6 cites·16 claims
- 2381US8995089B2Magnetic recording medium and method for producing the sameTOSHIBA KK·Filed 2013·Granted Mar 31, 2015·5 cites·20 claims
- 2481US8675308B2Magnetic recording head with high frequency oscillator and disk drive with the sameTOSHIBA KK·Filed 2012·Granted Mar 18, 2014·5 cites·15 claims
- 2581US8034471B2Magnetic recording medium, method of manufacturing magnetic recording medium and magnetic recording reproducing apparatusSHOWA DENKO KK·Filed 2009·Granted Oct 11, 2011·4 cites·10 claims
- 2679US10650860B2Magnetic disk device and write processing methodTOSHIBA KK·Filed 2019·Granted May 12, 2020·4 cites·16 claims
- 2777US10403308B2Magnetic disk device which controls a recording operation and a non-recording operation of a recording head and a recording head control method of the magnetic disk deviceTOSHIBA KK·Filed 2018·Granted Sep 3, 2019·4 cites·8 claims
- 2877US9222994B2Perpendicular spin torque oscillator FMR frequency measurement methodZHOU YUCHEN·Filed 2011·Granted Dec 29, 2015·3 cites·20 claims
- 2977US7848041B2Method and apparatus for correcting data errors in a disk driveKANUSHIKI KAISHA TOSHIBA·Filed 2008·Granted Dec 7, 2010·3 cites·13 claims
- 3073US8837087B2Thin magnetic film, method of manufacturing the same, and high frequency oscillator, magnetic head, magnetic recording medium, and magnetic recording/reproducing apparatus using thin magnetic filmTOSHIBA KK·Filed 2013·Granted Sep 16, 2014·2 cites·14 claims
- 3171US10657990B2Magnetic head and disk device having gap layers with different magnetic relative permeabilitiesTOSHIBA KK·Filed 2018·Granted May 19, 2020·2 cites·10 claims
- 3270US8908329B2Magnetic head with beveled main pole and spin torque oscillator, method of manufacturing the same, and magnetic recording/reproduction apparatusTOSHIBA KK·Filed 2012·Granted Dec 9, 2014·2 cites·11 claims
- 3367US10438616B2Magnetic recording head with specified thickness and saturation magnetic flux density products for STO magnetic layersTOSHIBA KK·Filed 2018·Granted Oct 8, 2019·1 cites·16 claims
- 3465US11568892B2Magnetic disk device having first and second assist elements and write operation methodTOSHIBA KK·Filed 2021·Granted Jan 31, 2023·0 cites·20 claims
- 3565US9171558B2Magnetic head with multiple reproducing elements each having magnetically coupled free layers, magnetic recording reproducing apparatus and magnetic head manufacturing methodTOSHIBA KK·Filed 2014·Granted Oct 27, 2015·1 cites·9 claims
- 3664US9886971B2Magnetic recording and reproducing device with stacked body configurationTOSHIBA KK·Filed 2016·Granted Feb 6, 2018·1 cites·14 claims
- 3763US8703621B2Manufacturing method of magnetic recording mediumKIMURA KAORI·Filed 2012·Granted Apr 22, 2014·1 cites·9 claims
- 3862US10854222B2Magnetic recording and reproducing device having a magnetic recording head including a magnetic flux control layer between a main magnetic pole and an auxiliary magnetic poleTOSHIBA KK·Filed 2019·Granted Dec 1, 2020·1 cites·8 claims
- 3961US6903890B2Method and apparatus for write compensation of perpendicular magnetic recording in disk driveTOSHIBA KK·Filed 2002·Granted Jun 7, 2005·4 cites·15 claims
- 4060US9721594B2Method of manufacturing spin torque oscillatorTOSHIBA KK·Filed 2014·Granted Aug 1, 2017·0 cites·4 claims
- 4160US9028704B2Magnetic recording medium and method of manufacturingTAKIZAWA KAZUTAKA·Filed 2012·Granted May 12, 2015·1 cites·10 claims
- 4260US8012613B2Magnetic recording medium, process for producing same, and magnetic recording reproducing apparatusSHOWA DENKO KK·Filed 2008·Granted Sep 6, 2011·2 cites·14 claims
- 4358US11862206B2Magnetic recording/reproducing device and magnetic recording/reproducing methodTOSHIBA KK·Filed 2022·Granted Jan 2, 2024·0 cites·5 claims
- 4458US8034472B2Magnetic recording medium, method of manufacturing the same, and magnetic recording/reproducing apparatusSHOWA DENKO KK·Filed 2009·Granted Oct 11, 2011·0 cites·6 claims
- 4556US6791800B2Device for suppressing magnetic noise of dual-layered disk in a disk driveTOSHIBA KK·Filed 2001·Granted Sep 14, 2004·2 cites·3 claims
- 4656US2014153139A1Method of manufacturing magnetoresistive elementTOSHIBA KK·Filed 2014·Application pending·0 cites
- 4755US10964344B2Magnetic disk device having two regions of different thicknessesTOSHIBA KK·Filed 2020·Granted Mar 30, 2021·0 cites·2 claims
- 4855US6930843B2Disk driveTOSHIBA KK·Filed 2001·Granted Aug 16, 2005·2 cites·17 claims
- 4955US2014139951A1Magnetic recording medium and magnetic recording/reproduction apparatusTOSHIBA KK·Filed 2014·Application pending·0 cites
- 5054US2020243108A1Magnetic head and disk device having the sameTOSHIBA KK·Filed 2020·Application pending·0 cites
Showing the top 50 of 89 patent records by PatentIndex Score.
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