Inventor · disambiguated record
Masato Shiimoto
Also filed as: SHIIMOTO MASATO
51 granted patents·8 pending applications·776 citations·filing 2008–2024
98Inventor score
Files withHGST Netherlands BV26WESTERN DIGITAL TECH INC11SHIIMOTO MASATO6HITACHI LTD3IGARASHI MASUKAZU3
Top patents by PatentIndex Score
59 records- 0199US10366714B1Magnetic write head for providing spin-torque-assisted write field enhancementWESTERN DIGITAL TECH INC·Filed 2017·Granted Jul 30, 2019·95 cites·21 claims
- 0297US9311934B1Symmetrical STO for oscillation with both polarity biasHGST Netherlands BV·Filed 2015·Granted Apr 12, 2016·33 cites·20 claims
- 0395US9064508B1Pile spin-torque oscillator with AF-mode oscillation for generating high AC-field in microwave-assisted magnetic recordingHGST Netherlands BV·Filed 2014·Granted Jun 23, 2015·58 cites·13 claims
- 0495US9007723B1Microwave-assisted magnetic recording (MAMR) head employing advanced current control to establish a magnetic resonance stateHGST Netherlands BV·Filed 2013·Granted Apr 14, 2015·33 cites·20 claims
- 0595US8879205B2High spin-torque efficiency spin-torque oscillator (STO) with dual spin polarization layerHGST Netherlands BV·Filed 2012·Granted Nov 4, 2014·32 cites·20 claims
- 0694US9202528B2MAMR head with recessed STOHGST Netherlands BV·Filed 2013·Granted Dec 1, 2015·24 cites·20 claims
- 0794US8988826B2MAMR head with a multi-layered side gap for stable oscillation of the STOHGST Netherlands BV·Filed 2012·Granted Mar 24, 2015·25 cites·13 claims
- 0894US8705206B1Microwave assisted magnetic recording (MAMR) head having an offset spin torque oscillator (STO) and narrow trailing gapHGST Netherlands BV·Filed 2012·Granted Apr 22, 2014·30 cites·20 claims
- 0994US8537497B2Magnetic recording head and magnetic recording/reproducing apparatusNAGASAKA KEIICHI·Filed 2012·Granted Sep 17, 2013·27 cites·20 claims
- 1094US8472135B1Microwave-assisted magnetic recording head having a current confinement structureKUSUKAWA KIKUO·Filed 2012·Granted Jun 25, 2013·66 cites·22 claims
- 1193US11011190B2Magnetic write head with write-field enhancement structure including a magnetic notchWESTERN DIGITAL TECH INC·Filed 2020·Granted May 18, 2021·5 cites·24 claims
- 1293US9355657B1Implementing spin torque oscillator erasure prevention in microwave-assisted magnetic recording (MAMR) hard disk drivesHGST Netherlands BV·Filed 2015·Granted May 31, 2016·18 cites·11 claims
- 1393US9099102B2Microwave-assisted magnetic recording head with high saturation magnetization material side shieldHGST Netherlands BV·Filed 2015·Granted Aug 4, 2015·15 cites·16 claims
- 1493US8964332B1Microwave-assisted magnetic recording head with asymmetric side gap for shingled magnetic recordingHGST Netherlands BV·Filed 2013·Granted Feb 24, 2015·18 cites·13 claims
- 1592US9406316B2Asymmetric MAMR head with self-aligned spin torque oscillator along flare edge for shingled magnetic recordingHGST Netherlands BV·Filed 2014·Granted Aug 2, 2016·21 cites·20 claims
- 1692US9378759B2Spin torque oscillator with low magnetic moment and high perpendicular magnetic anisotropy materialHGST Netherlands BV·Filed 2014·Granted Jun 28, 2016·17 cites·23 claims
- 1792US9355668B2Hard disk drive with contact detection using a spin torque oscillatorHGST Netherlands BV·Filed 2013·Granted May 31, 2016·16 cites·14 claims
- 1892US9047888B2MAMR head adapted for high speed switchingHGST Netherlands BV·Filed 2012·Granted Jun 2, 2015·17 cites·5 claims
- 1992US8570689B2Differential magnetoresistive effect head and magnetic recording/reading deviceSATO YO·Filed 2009·Granted Oct 29, 2013·16 cites·18 claims
- 2092US8345380B2Spin torque oscillator and magnetic recording head and magnetic recording device mounted with the spin torque oscillatorHITACHI LTD·Filed 2011·Granted Jan 1, 2013·19 cites·18 claims
- 2192US8223464B2Differential head having a balanced output and method of manufacturing thereofYASUI KAN·Filed 2009·Granted Jul 17, 2012·18 cites·13 claims
- 2291US8970996B2Spin-torque oscillator for microwave assisted magnetic recordingHGST Netherlands BV·Filed 2012·Granted Mar 3, 2015·25 cites·20 claims
- 2391US8848317B2Magnetic data recording system with mirror image asymmetric magnetic write elementsHGST Netherlands BV·Filed 2012·Granted Sep 30, 2014·15 cites·15 claims
- 2491US8687319B2Magnetic recording apparatus with magnetic recording head capable of recording information on a magnetic recording mediumIGARASHI MASUKAZU·Filed 2012·Granted Apr 1, 2014·16 cites·12 claims
- 2590US10811039B2Magnetic write head for providing spin-torque-assisted write field enhancementWESTERN DIGITAL TECH INC·Filed 2020·Granted Oct 20, 2020·3 cites·36 claims
- 2690US9396744B1Two dimensional magnetic read head having asymmetrical secondary read elementsHGST Netherlands BV·Filed 2015·Granted Jul 19, 2016·11 cites·17 claims
- 2789US9305574B1Negative-polarization spin-torque-oscillatorHGST Netherlands BV·Filed 2014·Granted Apr 5, 2016·10 cites·12 claims
- 2889US8547656B2Spin-torque oscillator (STO) for microwave-assisted magnetic recording (MAMR) and methods of use thereofIGARASHI MASUKAZU·Filed 2012·Granted Oct 1, 2013·11 cites·20 claims
- 2989US8223463B2Magnetic read headKATADA HIROYUKI·Filed 2009·Granted Jul 17, 2012·10 cites·16 claims
- 3088US9406315B2AF-mode STO with negative Hk spin polarization layerHGST Netherlands BV·Filed 2014·Granted Aug 2, 2016·11 cites·15 claims
- 3186US8520338B2Magnetic recording head, method of manufacturing the same, and magnetic disk unitUDO YUTA·Filed 2011·Granted Aug 27, 2013·10 cites·20 claims
- 3285US10546603B2Magnetic write head for providing spin-torque-assisted write field enhancementWESTERN DIGITAL TECH INC·Filed 2019·Granted Jan 28, 2020·4 cites·20 claims
- 3385US8582225B2Microwave-assisted magnetic recording head and magnetic read/write apparatus using the sameSHIIMOTO MASATO·Filed 2011·Granted Nov 12, 2013·8 cites·12 claims
- 3484US8537505B2Magnetoresistive effect head having a free layer and a magnetic domain control layer that applies a magnetic field more strongly in an upper part of the free layerSHIIMOTO MASATO·Filed 2010·Granted Sep 17, 2013·6 cites·26 claims
- 3582US8284527B2Magnetic heads having a graded domain control film and methods of manufacture thereofYOSHIDA NOBUO·Filed 2010·Granted Oct 9, 2012·6 cites·20 claims
- 3680US8824103B2Magnetic recording head and magnetic recording apparatusSHIIMOTO MASATO·Filed 2012·Granted Sep 2, 2014·5 cites·5 claims
- 3780US8670201B2Magnetic recording deviceMATSUBARA MASATO·Filed 2012·Granted Mar 11, 2014·5 cites·7 claims
- 3878US8773822B2Spin-torque oscillator for microwave assisted magnetic recordingMATSUBARA MASATO·Filed 2011·Granted Jul 8, 2014·4 cites·17 claims
- 3976US9007724B1Head structure with electric damage protection for a microwave-assisted hard disk driveHGST Netherlands BV·Filed 2014·Granted Apr 14, 2015·3 cites·20 claims
- 4071US9799369B2Switching period control of microwave assisted magnetic recording for pole erasure suppressionWESTERN DIGITAL TECH INC·Filed 2015·Granted Oct 24, 2017·2 cites·5 claims
- 4171US9336797B2Extended spin torque oscillatorHGST Netherlands BV·Filed 2014·Granted May 10, 2016·2 cites·20 claims
- 4271US9190081B2AF-coupled dual side shield reader with AF-coupled USLHGST Netherlands BV·Filed 2014·Granted Nov 17, 2015·2 cites·22 claims
- 4371US2025087235A1Spintronic Device Comprising Dual FGL and Dual SPL To Reduce Perpendicular Field At Writing LocationWESTERN DIGITAL TECH INC·Filed 2024·Application pending·0 cites
- 4470US12190920B2Spintronic device comprising dual FGL and dual SPL to reduce perpendicular field at writing locationWESTERN DIGITAL TECH INC·Filed 2023·Granted Jan 7, 2025·0 cites·13 claims
- 4570US12190919B2Dual FGL and dual SPL spintronic device to reduce perpendicular field at writing locationWESTERN DIGITAL TECH INC·Filed 2023·Granted Jan 7, 2025·0 cites·17 claims
- 4670US2025087236A1Dual FGL and Dual SPL Spintronic Device To Reduce Perpendicular Field At Writing LocationWESTERN DIGITAL TECH INC·Filed 2024·Application pending·0 cites
- 4769US8643967B2Magnetic disk drive and microwave assisted recording methodKATADA HIROYUKI·Filed 2012·Granted Feb 4, 2014·2 cites·14 claims
- 4868US9245548B2Magnetic head using a synthetic ferri free structureSHIIMOTO MASATO·Filed 2008·Granted Jan 26, 2016·1 cites·20 claims
- 4961US8270122B2Magnetic recording and reproducing device including a differential read headSHIIMOTO MASATO·Filed 2009·Granted Sep 18, 2012·1 cites·5 claims
- 5055US2013321956A1Magnetic head and magnetic recording/reproduction apparatus using the sameHITACHI LTD·Filed 2013·Application pending·0 cites
Showing the top 50 of 59 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →