Inventor · disambiguated record
Susumu Okamura
Also filed as: OKAMURA SUSUMU
54 granted patents·5 pending applications·474 citations·filing 1994–2025
98Inventor score
Files withWESTERN DIGITAL TECH INC40HGST Netherlands BV11OKAMURA SUSUMU3IKEDA TAKESHI1KAWASAKI STEEL CO1
Top patents by PatentIndex Score
59 records- 0199US10839833B1Spin transfer torque device with oxide layer beneath the seed layerWESTERN DIGITAL TECH INC·Filed 2020·Granted Nov 17, 2020·7 cites·20 claims
- 0298US11532323B1BiSbX (012) layers having increased operating temperatures for SOT and MRAM devicesWESTERN DIGITAL TECH INC·Filed 2021·Granted Dec 20, 2022·21 cites·32 claims
- 0398US10943611B1Spintronic devices with narrow spin polarization layersWESTERN DIGITAL TECH INC·Filed 2020·Granted Mar 9, 2021·14 cites·16 claims
- 0498US10037772B2Low magnetic flux density interface layer for spin torque oscillatorWESTERN DIGITAL TECH INC·Filed 2017·Granted Jul 31, 2018·33 cites·20 claims
- 0597US11289118B1Spintronic device having negative interface spin scatteringWESTERN DIGITAL TECH INC·Filed 2021·Granted Mar 29, 2022·11 cites·20 claims
- 0697US11127420B1Seed layer for spin torque oscillator in microwave assisted magnetic recording deviceWESTERN DIGITAL TECH INC·Filed 2019·Granted Sep 21, 2021·8 cites·12 claims
- 0796US12040114B2Magnetoresistive device comprising a synthetic antiferromagnetic coupling layer of RuAl having a (001) textureWESTERN DIGITAL TECH INC·Filed 2022·Granted Jul 16, 2024·2 cites·39 claims
- 0896US10762917B1Reversed mode spin torque oscillator with shaped field generation layerWESTERN DIGITAL TECH INC·Filed 2019·Granted Sep 1, 2020·20 cites·12 claims
- 0996US9805746B1Low magnetic flux density interface layer for spin torque oscillatorHGST Netherlands BV·Filed 2016·Granted Oct 31, 2017·19 cites·22 claims
- 1095US11257514B2Magnetic recording devices having negative polarization layer to enhance spin-transfer torqueWESTERN DIGITAL TECH INC·Filed 2020·Granted Feb 22, 2022·5 cites·21 claims
- 1195US10950258B1Spin torque oscillator having one or more chromium insertion layers for magnetic recording drivesWESTERN DIGITAL TECH INC·Filed 2020·Granted Mar 16, 2021·6 cites·21 claims
- 1295US9177575B1Tunneling magnetoresistive (TMR) read head with reduced gap thicknessHGST Netherlands BV·Filed 2014·Granted Nov 3, 2015·37 cites·20 claims
- 1394US9230569B1Low Bs spin-polarizer for spin torque oscillatorHGST Netherlands BV·Filed 2014·Granted Jan 5, 2016·30 cites·20 claims
- 1493US10643643B1Spin torque oscillator device including a high damping field generation layer or a damping enhancing capping layerWESTERN DIGITAL TECH INC·Filed 2019·Granted May 5, 2020·12 cites·20 claims
- 1593US9728210B2Texture-control layer for spin torque oscillatorHGST Netherlands BV·Filed 2015·Granted Aug 8, 2017·13 cites·20 claims
- 1693US9099107B1Stabilizing layer for a spin torque oscillator (STO)HGST Netherlands BV·Filed 2015·Granted Aug 4, 2015·22 cites·20 claims
- 1792US9378759B2Spin torque oscillator with low magnetic moment and high perpendicular magnetic anisotropy materialHGST Netherlands BV·Filed 2014·Granted Jun 28, 2016·17 cites·23 claims
- 1890US11990163B2Multilayer structures for magnetic recording devices to facilitate targeted magnetic switching and low coercivityWESTERN DIGITAL TECH INC·Filed 2022·Granted May 21, 2024·2 cites·28 claims
- 1990US5629553AVariable inductance element using an inductor conductorIKEDA TAKESHI·Filed 1994·Granted May 13, 1997·79 cites·42 claims
- 2089US11763973B2Buffer layers and interlayers that promote BiSbx (012) alloy orientation for SOT and MRAM devicesWESTERN DIGITAL TECH INC·Filed 2021·Granted Sep 19, 2023·1 cites·32 claims
- 2189US9305574B1Negative-polarization spin-torque-oscillatorHGST Netherlands BV·Filed 2014·Granted Apr 5, 2016·10 cites·12 claims
- 2289US8958180B1Capping materials for magnetic read head sensorHGST Netherlands BV·Filed 2013·Granted Feb 17, 2015·10 cites·18 claims
- 2386US2025366376A1Buffer Layers And Interlayers That Promote BiSbx (012) Alloy Orientation For SOT And MRAM DevicesWESTERN DIGITAL TECH INC·Filed 2025·Application pending·0 cites
- 2484US11211083B1MAMR head with synthetic antiferromagnetic (SAF) coupled notchWESTERN DIGITAL TECH INC·Filed 2020·Granted Dec 28, 2021·2 cites·21 claims
- 2581US11881236B2Spin torque oscillator with enhanced spin polarizerWESTERN DIGITAL TECH INC·Filed 2022·Granted Jan 23, 2024·1 cites·22 claims
- 2678US11908496B2BiSbX (012) layers having increased operating temperatures for SOT and MRAM devicesWESTERN DIGITAL TECH INC·Filed 2022·Granted Feb 20, 2024·0 cites·25 claims
- 2778US11682420B2Seed layer for spin torque oscillator in microwave assisted magnetic recording deviceWESTERN DIGITAL TECH INC·Filed 2021·Granted Jun 20, 2023·0 cites·19 claims
- 2877US10734013B2Spin transfer torque (STT) device with multilayer seed layers for magnetic recording and memoryWESTERN DIGITAL TECH INC·Filed 2019·Granted Aug 4, 2020·3 cites·29 claims
- 2976US9437222B1Spin torque oscillator with high spin torque efficiency and reliabilityHGST Netherlands BV·Filed 2015·Granted Sep 6, 2016·4 cites·13 claims
- 3074US12417782B2Multilayer structures for magnetic recording devices to facilitate targeted magnetic switching and low coercivityWESTERN DIGITAL TECH INC·Filed 2024·Granted Sep 16, 2025·0 cites·20 claims
- 3174US12408560B2Buffer layers and interlayers that promote BiSbx (012) alloy orientation for sot and MRAM devicesWESTERN DIGITAL TECH INC·Filed 2023·Granted Sep 2, 2025·0 cites·24 claims
- 3272US5492856AMethod of forming a semiconductor device having a LC elementFiled 1995·Granted Feb 20, 1996·28 cites·2 claims
- 3370US9858952B1Microwave assisted magnetic recording head having spin torque oscillator frequency detectionHGST Netherlands BV·Filed 2016·Granted Jan 2, 2018·2 cites·20 claims
- 3470US8570690B2Magnetic sensor having a hard bias seed structureOKAMURA SUSUMU·Filed 2011·Granted Oct 29, 2013·2 cites·20 claims
- 3569US12207563B2Magnetoresistive devices comprising a synthetic antiferromagnetic coupling layer of RuAl having a (110) textureWESTERN DIGITAL TECH INC·Filed 2022·Granted Jan 21, 2025·0 cites·32 claims
- 3669US8189304B2Magnetoresistive magnetic head having a cpp element using a heusler alloy layer and a high saturation magnetization layerOKAMURA SUSUMU·Filed 2009·Granted May 29, 2012·5 cites·17 claims
- 3769US5497028ALC element and semiconductor device having a signal transmission line and LC element manufacturing methodFiled 1994·Granted Mar 5, 1996·24 cites·82 claims
- 3867US12106791B2Doped BiSb (012) or undoped BiSb (001) topological insulator with GeNiFe buffer layer and/or interlayer for SOT based sensor, memory, and storage devicesWESTERN DIGITAL TECH INC·Filed 2022·Granted Oct 1, 2024·0 cites·34 claims
- 3966US11657836B2Magnetic recording devices having negative polarization layer to enhance spin-transfer torqueWESTERN DIGITAL TECH INC·Filed 2022·Granted May 23, 2023·0 cites·20 claims
- 4064US12106784B2Read sensor with ordered heusler alloy free layer and semiconductor barrier layerWESTERN DIGITAL TECH INC·Filed 2023·Granted Oct 1, 2024·0 cites·21 claims
- 4164US12033675B2Cobalt-boron (CoB) layer for magnetic recording devices, memory devices, and storage devicesWESTERN DIGITAL TECH INC·Filed 2022·Granted Jul 9, 2024·0 cites·20 claims
- 4264US10446175B2Spin transfer torque device with oxide layer beneath the seed layerWESTERN DIGITAL TECH INC·Filed 2017·Granted Oct 15, 2019·1 cites·16 claims
- 4364US5557138ALC element and semiconductor deviceFiled 1994·Granted Sep 17, 1996·22 cites·72 claims
- 4461US12094498B1Recording head with a multilayer spin torque element having positive and negative beta materialsWESTERN DIGITAL TECH INC·Filed 2023·Granted Sep 17, 2024·0 cites·20 claims
- 4561US11683993B2Material having both negative spin polarization and negative anisotropyWESTERN DIGITAL TECH INC·Filed 2021·Granted Jun 20, 2023·0 cites·26 claims
- 4661US10872627B2Reversed mode spin torque oscillator with shaped field generation layerWESTERN DIGITAL TECH INC·Filed 2020·Granted Dec 22, 2020·0 cites·20 claims
- 4761US8451565B1Magnetoresistive head having perpendicularly offset anisotropy films and a hard disk drive using the sameOKAMURA SUSUMU·Filed 2011·Granted May 28, 2013·1 cites·20 claims
- 4859US12035634B2Tunneling magnetoresistive (TMR) device with improved seed layerWESTERN DIGITAL TECH INC·Filed 2021·Granted Jul 9, 2024·0 cites·21 claims
- 4958US11925120B2Spintronic devices with self-cooling functionWESTERN DIGITAL TECH INC·Filed 2021·Granted Mar 5, 2024·0 cites·29 claims
- 5058US2025210241A1Spin Orbit Torque (SOT) Device Having a Topological Insulator Layer and a Diffusion Barrier LayerWESTERN DIGITAL TECH INC·Filed 2023·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 →