Inventor · disambiguated record
Yunfei Ding
Also filed as: DING YUNFEI
41 granted patents·6 pending applications·1,026 citations·filing 2005–2025
97Inventor score
Files withWESTERN DIGITAL TECH INC32GRANDIS INC5WESTERN DIGITAL FREMONT LLC4YU CHENGTAO R2APALKOV DMYTRO1
Top patents by PatentIndex Score
47 records- 0199US7187577B1Method and system for providing current balanced writing for memory cells and magnetic devicesGRANDIS INC·Filed 2005·Granted Mar 6, 2007·393 cites·36 claims
- 0298US11900971B1Magnetic recording head with assisting electric current in trailing shieldWESTERN DIGITAL TECH INC·Filed 2022·Granted Feb 13, 2024·10 cites·19 claims
- 0398US11881237B1Cross track current design for energy assisted magnetic recordingWESTERN DIGITAL TECH INC·Filed 2021·Granted Jan 23, 2024·9 cites·20 claims
- 0498US11869548B1Magnetic recording devices having external alternating current sourcesWESTERN DIGITAL TECH INC·Filed 2021·Granted Jan 9, 2024·9 cites·24 claims
- 0598US11508401B1Magnetic recording devices having cross-track current flow to facilitate downtrack magnetic field enhancementsWESTERN DIGITAL TECH INC·Filed 2021·Granted Nov 22, 2022·13 cites·21 claims
- 0698US7502249B1Method and system for using a pulsed field to assist spin transfer induced switching of magnetic memory elementsGRANDIS INC·Filed 2007·Granted Mar 10, 2009·315 cites·20 claims
- 0796US11894026B1Magnetic recording head having leads over the trailing shield for assisting electric currentsWESTERN DIGITAL TECH INC·Filed 2022·Granted Feb 6, 2024·6 cites·23 claims
- 0896US8760823B1Method and system for providing a read transducer having soft and hard magnetic bias structuresCHEN LAURENCE L·Filed 2011·Granted Jun 24, 2014·135 cites·9 claims
- 0995US10424323B1High-bandwidth STO bias architecture with integrated slider voltage potential controlWESTERN DIGITAL TECH INC·Filed 2018·Granted Sep 24, 2019·13 cites·20 claims
- 1095US10388305B1Apparatus and method for writing to magnetic media using an AC bias current to enhance the write fieldWESTERN DIGITAL TECH INC·Filed 2018·Granted Aug 20, 2019·18 cites·20 claims
- 1194US9236560B1Spin transfer torque tunneling magnetoresistive device having a laminated free layer with perpendicular magnetic anisotropyWESTERN DIGITAL FREMONT LLC·Filed 2014·Granted Jan 12, 2016·14 cites·20 claims
- 1294US9087527B1Apparatus and method for middle shield connection in magnetic recording transducersWESTERN DIGITAL FREMONT LLC·Filed 2014·Granted Jul 21, 2015·24 cites·20 claims
- 1390US11087784B2Data storage devices with integrated slider voltage potential controlWESTERN DIGITAL TECH INC·Filed 2020·Granted Aug 10, 2021·3 cites·20 claims
- 1490US10891973B2High-bandwidth STO bias architecture with integrated slider voltage potential controlWESTERN DIGITAL TECH INC·Filed 2020·Granted Jan 12, 2021·3 cites·20 claims
- 1590US7532505B1Method and system for using a pulsed field to assist spin transfer induced switching of magnetic memory elementsGRANDIS INC·Filed 2006·Granted May 12, 2009·26 cites·13 claims
- 1687US12315538B2Magnetic recording head with assisting electric current in trailing shieldWESTERN DIGITAL TECH INC·Filed 2024·Granted May 27, 2025·1 cites·23 claims
- 1787US12057146B1Magnetic recording head with an SOT device coupled with side shieldWESTERN DIGITAL TECH INC·Filed 2023·Granted Aug 6, 2024·3 cites·18 claims
- 1886US7957179B2Magnetic shielding in magnetic multilayer structuresGRANDIS INC·Filed 2007·Granted Jun 7, 2011·12 cites·15 claims
- 1985US10643642B2Apparatus and method for writing to magnetic media using an AC bias current to enhance the write fieldWESTERN DIGITAL TECH INC·Filed 2019·Granted May 5, 2020·5 cites·23 claims
- 2083US9705072B2Spin transfer torque tunneling magnetoresistive device having a laminated free layer with perpendicular magnetic anisotropyWESTERN DIGITAL (FREMONT) LLC·Filed 2016·Granted Jul 11, 2017·2 cites·23 claims
- 2181US10629229B2High-bandwidth STO bias architecture with integrated slider voltage potential controlWESTERN DIGITAL TECH INC·Filed 2019·Granted Apr 21, 2020·3 cites·19 claims
- 2281US2025273235A1Magnetic Recording Head With Assisting Electric Current In Trailing ShieldWESTERN DIGITAL TECH INC·Filed 2025·Application pending·0 cites
- 2380US2025316289A1Magnetic Recording Head with A Cross-Track Current Flow In A Low Resistance PathWESTERN DIGITAL TECH INC·Filed 2025·Application pending·0 cites
- 2474US10741202B2MAMR writer with low resistance MAMR stackWESTERN DIGITAL TECHNOLOGIES INC·Filed 2019·Granted Aug 11, 2020·2 cites·16 claims
- 2572US12380923B2Magnetic recording head with a cross-track current flow in a low resistance pathWESTERN DIGITAL TECH INC·Filed 2023·Granted Aug 5, 2025·0 cites·21 claims
- 2672US12249358B2Magnetic recording devices having external alternating current sourcesWESTERN DIGITAL TECH INC·Filed 2023·Granted Mar 11, 2025·0 cites·22 claims
- 2772US10957346B2Magnetic recording devices and methods using a write-field-enhancement structure and bias current with offset pulsesWESTERN DIGITAL TECH INC·Filed 2020·Granted Mar 23, 2021·1 cites·28 claims
- 2871US8378438B2Method and system for providing magnetic elements having enhanced magnetic anisotropy and memories using such magnetic elementsGRANDIS INC·Filed 2008·Granted Feb 19, 2013·3 cites·29 claims
- 2971US2025087235A1Spintronic Device Comprising Dual FGL and Dual SPL To Reduce Perpendicular Field At Writing LocationWESTERN DIGITAL TECH INC·Filed 2024·Application pending·0 cites
- 3071US2025131942A1Dynamic DC Field Compensator for MAMR Recording HeadWESTERN DIGITAL TECH INC·Filed 2024·Application pending·0 cites
- 3170US12205620B2Dynamic DC field compensator for MAMR recording headWESTERN DIGITAL TECH INC·Filed 2023·Granted Jan 21, 2025·0 cites·20 claims
- 3270US12190920B2Spintronic 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
- 3370US12190919B2Dual 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
- 3470US2025087236A1Dual FGL and Dual SPL Spintronic Device To Reduce Perpendicular Field At Writing LocationWESTERN DIGITAL TECH INC·Filed 2024·Application pending·0 cites
- 3568US9087534B1Method and system for providing a read transducer having soft and hard magnetic bias structuresWESTERN DIGITAL FREMONT LLC·Filed 2014·Granted Jul 21, 2015·1 cites·20 claims
- 3664US11276424B2Data storage devices with integrated slider voltage potential controlWESTERN DIGITAL TECH INC·Filed 2021·Granted Mar 15, 2022·0 cites·20 claims
- 3763US12347467B2DC and synchronized energy assisted perpendicular magnetic recording (EPMR) driver circuit for hard disk drive (HDD)WESTERN DIGITAL TECH INC·Filed 2023·Granted Jul 1, 2025·0 cites·22 claims
- 3862US9047902B1Touchdown sensor having a more stable crystal structure for use in hard disk drivesYU CHENGTAO R·Filed 2011·Granted Jun 2, 2015·1 cites·19 claims
- 3961US12183372B2System controlled RF signal source architecture with transducer near pole-tip for microwave assisted magnetic recordingWESTERN DIGITAL TECH INC·Filed 2023·Granted Dec 31, 2024·0 cites·19 claims
- 4060US11049514B2MAMR writer with low resistance MAMR stackWESTERN DIGITAL TECH INC·Filed 2020·Granted Jun 29, 2021·0 cites·19 claims
- 4160US10825474B2Data storage device reverse biasing head element to counter electro-migrationWESTERN DIGITAL TECH INC·Filed 2020·Granted Nov 3, 2020·0 cites·18 claims
- 4259US11776568B2Device lifetime improvement through constant temperatureWESTERN DIGITAL TECH INC·Filed 2022·Granted Oct 3, 2023·0 cites·21 claims
- 4357US12444434B2Magnetic recording head with current path between trailing shield and leading shield for improved resistanceWESTERN DIGITAL TECH INC·Filed 2023·Granted Oct 14, 2025·0 cites·18 claims
- 4454US10566018B2Data storage device reverse biasing head element to counter electro-migrationWESTERN DIGITAL TECH INC·Filed 2019·Granted Feb 18, 2020·0 cites·20 claims
- 4549US8837081B1Laminated touchdown sensor for hard disk drivesYU CHENGTAO R·Filed 2011·Granted Sep 16, 2014·0 cites·19 claims
- 4649US8213221B2Magnetic shielding in magnetic multilayer structuresDING YUNFEI·Filed 2011·Granted Jul 3, 2012·1 cites·15 claims
- 4743US2007085068A1Spin transfer based magnetic storage cells utilizing granular free layers and magnetic memories using such cellsAPALKOV DMYTRO·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →