Inventor · disambiguated record
Ryuji Fujii
Also filed as: FUJII RYUJI
68 granted patents·3 pending applications·406 citations·filing 2000–2024
98Inventor score
Top patents by PatentIndex Score
71 records- 0195US8149653B2Light source unit for thermally-assisted magnetic recording capable of monitoring of light outputSHIMAZAWA KOJI·Filed 2010·Granted Apr 3, 2012·32 cites·14 claims
- 0294US8248897B2Method for manufacturing thermally-assisted magnetic recording head comprising light source unit and sliderSHIMAZAWA KOJI·Filed 2010·Granted Aug 21, 2012·28 cites·19 claims
- 0393US8456968B1Thermally-assisted magnetic recording head having dual heat sink layersSASAKI YOSHITAKA·Filed 2012·Granted Jun 4, 2013·23 cites·6 claims
- 0492US8811127B1Magnetic head comprising recording part, reading part, heater for expansion of the recording part, and heater for expansion of the reading partTDK CORP·Filed 2013·Granted Aug 19, 2014·17 cites·11 claims
- 0591US8867170B1Multilayer plasmon generatorSASAKI YOSHITAKA·Filed 2013·Granted Oct 21, 2014·16 cites·22 claims
- 0691US8760809B1Thermally-assisted magnetic recording head having a plasmon generatorSASAKI YOSHITAKA·Filed 2013·Granted Jun 24, 2014·14 cites·6 claims
- 0791US8493821B1Thermally-assisted magnetic recording head including a shieldSASAKI YOSHITAKA·Filed 2012·Granted Jul 23, 2013·15 cites·14 claims
- 0890US8830799B1Near-field light generator and thermally-assisted magnetic recording headSASAKI YOSHITAKA·Filed 2013·Granted Sep 9, 2014·13 cites·6 claims
- 0990US8638645B1Thermally assisted magnetic head slider having plasmon unit formed with a recessSAE MAGNETICS HK LTD·Filed 2012·Granted Jan 28, 2014·15 cites·17 claims
- 1090US8588040B1Thermally assisted magnetic head slider, head gimbal assembly, and hard disk drive with the same, and manufacturing method thereofSAE MAGNETICS HK LTD·Filed 2012·Granted Nov 19, 2013·18 cites·30 claims
- 1189US8861318B1Thermally assisted magnetic write head, and method of manufacturing the sameSAE MAGNETICS HK LTD·Filed 2013·Granted Oct 14, 2014·13 cites·16 claims
- 1289US8711663B1Plasmon generator includes three metal layers for thermally-assisted magnetic recordingSASAKI YOSHITAKA·Filed 2013·Granted Apr 29, 2014·11 cites·10 claims
- 1389US8254214B2Light source unit for thermally-assisted magnetic recording including dual electrode layers connected to a unit electrodeSHIMAZAWA KOJI·Filed 2009·Granted Aug 28, 2012·11 cites·10 claims
- 1489US8248895B2Method for manufacturing thermally-assisted magnetic recording head comprising light source unit and sliderSHIMAZAWA KOJI·Filed 2010·Granted Aug 21, 2012·11 cites·10 claims
- 1588US10061084B1Coupling structure of optical components and coupling method of the sameSAE MAGNETICS HK LTD·Filed 2017·Granted Aug 28, 2018·8 cites·11 claims
- 1687US7716814B2Method of manufacturing magnetic head, and magnetic head substructureHEADWAY TECHNOLOGIES INC·Filed 2007·Granted May 18, 2010·8 cites·20 claims
- 1786US11127424B1Thermally-assisted magnetic recording head having active layer with quantum dot structureSAE MAGNETICS HK LTD·Filed 2020·Granted Sep 21, 2021·1 cites·19 claims
- 1886US8498183B1Thermally-assisted magnetic recording head having a waveguide and a return path sectionSASAKI YOSHITAKA·Filed 2012·Granted Jul 30, 2013·8 cites·5 claims
- 1985US8509038B1Near-field light generator and thermally-assisted magnetic recording headSASAKI YOSHITAKA·Filed 2012·Granted Aug 13, 2013·7 cites·9 claims
- 2083US9489972B2Light source unit, heat-assisted magnetic recording head using the same, and light source for light source unitSAE MAGNETICS HK LTD·Filed 2015·Granted Nov 8, 2016·3 cites·10 claims
- 2183US8988975B1Thermally assisted magnetic head, method of manufacturing the same, head gimbal assembly, and hard disk driveSASAKI YOSHITAKA·Filed 2013·Granted Mar 24, 2015·6 cites·20 claims
- 2282US9437227B1Thermally assisted magnetic recording head slider, method of manufacturing the same, head gimbal assembly, and hard disk driveSAE MAGNETICS HK LTD·Filed 2015·Granted Sep 6, 2016·6 cites·13 claims
- 2382US7153198B2Fixture for slider lapping, lapping device and lapping methodSAE MAGNETICS HK LTD·Filed 2005·Granted Dec 26, 2006·7 cites·9 claims
- 2481US7746597B2Slider having protective films of differing hydrogen contentSAE MAGNETICS HK LTD·Filed 2006·Granted Jun 29, 2010·4 cites·11 claims
- 2578US9208806B2Near-field light generator including a waveguide and a plasmon generatorSASAKI YOSHITAKA·Filed 2014·Granted Dec 8, 2015·4 cites·14 claims
- 2678US8902546B1Head stack assembly with light shielding structure, and disk drive unit with the sameSAE MAGNETICS HK LTD·Filed 2013·Granted Dec 2, 2014·4 cites·18 claims
- 2778US8619518B1Thermally-assisted magnetic recording head having expanded near-field light generating layer and method of manufactureSASAKI YOSHITAKA·Filed 2012·Granted Dec 31, 2013·4 cites·17 claims
- 2877US6679760B2Lapping method of magnetic head slider and lapping method of barSAE MAGNETICS HK LTD·Filed 2002·Granted Jan 20, 2004·13 cites·5 claims
- 2977US6452750B1Slider including a rail having a concave end and method of manufacturing sameTDK CORP·Filed 2000·Granted Sep 17, 2002·11 cites·4 claims
- 3075US8861138B2Multilayer plasmon generatorSASAKI YOSHITAKA·Filed 2013·Granted Oct 14, 2014·3 cites·10 claims
- 3175US8848494B2Plasmon generator including two portions made of different metalsSASAKI YOSHITAKA·Filed 2013·Granted Sep 30, 2014·3 cites·13 claims
- 3275US8384405B2Method for performing burn-in testTDK CORP·Filed 2011·Granted Feb 26, 2013·3 cites·10 claims
- 3374US8509036B2Method of burn-in testing for thermally assisted headSHIMAZAWA KOJI·Filed 2010·Granted Aug 13, 2013·4 cites·7 claims
- 3473US9163939B2Method of manufacturing thermally-assisted magnetic head and alignment apparatus thereofSAE MAGNETICS HK LTD·Filed 2014·Granted Oct 20, 2015·4 cites·10 claims
- 3573US7464456B2Slider separating methodSAE MAGNETICS HK LTD·Filed 2005·Granted Dec 16, 2008·4 cites·8 claims
- 3673US6398623B1Processing method of device and processing method of sliderTDK CORP·Filed 2000·Granted Jun 4, 2002·9 cites·6 claims
- 3771US8801945B2Write element, thermally assisted magnetic head slider, head gimbal assembly, hard disk drive with the same, and manufacturing method thereofSAE MAGNETICS HK LTD·Filed 2013·Granted Aug 12, 2014·2 cites·24 claims
- 3868US9666218B1Thermal assisted magnetic head provided with light detector that detects reflected lightSAE MAGNETICS HK LTD·Filed 2016·Granted May 30, 2017·2 cites·21 claims
- 3968US8503493B1System and method for cooling a semiconductor light source bar during burn-in testingFUJII RYUJI·Filed 2012·Granted Aug 6, 2013·3 cites·9 claims
- 4068US7281317B2Manufacturing method of flying magnetic head sliderSAE MAGNETICS HK LTD·Filed 2004·Granted Oct 16, 2007·13 cites·9 claims
- 4167US10490212B2Row bar and wafer for forming magnetic headsSAE MAGNETICS HK LTD·Filed 2017·Granted Nov 26, 2019·3 cites·14 claims
- 4267US8537643B2Light source chip and a thermally assisted head with the same, and manufacturing methods thereofFUJII RYUJI·Filed 2011·Granted Sep 17, 2013·2 cites·30 claims
- 4367US7326102B2Apparatus for lapping thin film magnetic headsSAE MAGNETICS HK LTD·Filed 2004·Granted Feb 5, 2008·11 cites·5 claims
- 4464US11817678B2Semiconductor laser and laser radar device having the semiconductor laserSAE MAGNETICS HK LTD·Filed 2021·Granted Nov 14, 2023·0 cites·16 claims
- 4564US8614863B2Row bar with smart sensor for forming sliders and method of manufacturing sliderFUJII RYUJI·Filed 2010·Granted Dec 24, 2013·3 cites·15 claims
- 4662US9236082B2Near-field light generator including a waveguide and a plasmon generatorSASAKI YOSHITAKA·Filed 2013·Granted Jan 12, 2016·1 cites·19 claims
- 4762US8166630B2Magnetic head slider manufacturing methodFUJII RYUJI·Filed 2008·Granted May 1, 2012·1 cites·24 claims
- 4860US12400679B1Thermally assisted magnetic head, head gimbal assembly, and hard disk driveSAE MAGNETICS HK LTD·Filed 2024·Granted Aug 26, 2025·0 cites·17 claims
- 4957US12406690B1Light source unit, thermally assisted magnetic head, head gimbal assembly, and hard disk driveSAE MAGNETICS HK LTD·Filed 2024·Granted Sep 2, 2025·0 cites·15 claims
- 5056US10311903B2Method and system of testing slider body of thermally-assisted magnetic headSAE MAGNETICS HK LTD·Filed 2017·Granted Jun 4, 2019·1 cites·14 claims
Showing the top 50 of 71 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →