Inventor · disambiguated record
Ian Robson Mcfadyen
Also filed as: MCFADYEN IAN R · MCFADYEN IAN ROBSON
23 granted patents·3 pending applications·325 citations·filing 1997–2024
96Inventor score
Files withHITACHI GLOBAL STORAGE TECH13WESTERN DIGITAL TECH INC9GUNDER JEFFREY P1HGST Netherlands BV1IBM1
Top patents by PatentIndex Score
26 records- 0196US7212379B2Perpendicular magnetic recording head with flare and taper configurationsHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted May 1, 2007·72 cites·8 claims
- 0295US10424323B1High-bandwidth STO bias architecture with integrated slider voltage potential controlWESTERN DIGITAL TECH INC·Filed 2018·Granted Sep 24, 2019·13 cites·20 claims
- 0392US7382586B2Magnetic read sensor employing oblique etched underlayers for inducing uniaxial magnetic anisotropy in a self biased free layerHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Jun 3, 2008·22 cites·41 claims
- 0492US7271982B2Perpendicular magnetic recording head built using an air-bearing surface damascene processHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Sep 18, 2007·34 cites·34 claims
- 0590US11087784B2Data storage devices with integrated slider voltage potential controlWESTERN DIGITAL TECH INC·Filed 2020·Granted Aug 10, 2021·3 cites·20 claims
- 0690US10891973B2High-bandwidth STO bias architecture with integrated slider voltage potential controlWESTERN DIGITAL TECH INC·Filed 2020·Granted Jan 12, 2021·3 cites·20 claims
- 0790US6195227B1Integrated 3D limiters for microactuatorsIBM·Filed 1997·Granted Feb 27, 2001·60 cites·24 claims
- 0887US7168939B2System, method, and apparatus for multilevel UV molding lithography for air bearing surface patterningHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Jan 30, 2007·30 cites·16 claims
- 0985US7296337B2Notched trailing shield for perpendicular write headHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Nov 20, 2007·19 cites·14 claims
- 1085US6861177B2Method of forming a read sensor using a lift-off mask having a hardmask layer and a release layerHITACHI GLOBAL STORAGE TECH·Filed 2002·Granted Mar 1, 2005·19 cites·15 claims
- 1183US11615804B1Disk drive biasing two write assist elements using three terminal control circuitryWESTERN DIGITAL TECH INC·Filed 2020·Granted Mar 28, 2023·2 cites·15 claims
- 1282US9564163B2Implementing dual partially independent thermal flyheight control (TFC) for hard disk drivesHGST Netherlands BV·Filed 2015·Granted Feb 7, 2017·6 cites·20 claims
- 1382US8390962B2Lapping method and station to achieve tight dimension controls for both read and write elements of magnetic recording heads and magnetic storage device formed therebyGUNDER JEFFREY P·Filed 2005·Granted Mar 5, 2013·8 cites·6 claims
- 1481US10629229B2High-bandwidth STO bias architecture with integrated slider voltage potential controlWESTERN DIGITAL TECH INC·Filed 2019·Granted Apr 21, 2020·3 cites·19 claims
- 1577US6678127B2Device and method of reducing ESD damage in thin film read heads which enables measurement of gap resistances and method of makingHITACHI GLOBAL STORAGE TECH·Filed 2001·Granted Jan 13, 2004·12 cites·8 claims
- 1675US6944937B2Method of reducing ESD damage in thin film read heads which enables measurement of gap resistanceHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Sep 20, 2005·10 cites·23 claims
- 1772US8514518B2Flat E-yoke for cusp write headMCFADYEN IAN ROBSON·Filed 2008·Granted Aug 20, 2013·3 cites·6 claims
- 1869US7591064B2Method of fabrication for tape medium read head with unitary formation of multiple elementsHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Sep 22, 2009·5 cites·5 claims
- 1964US11276424B2Data storage devices with integrated slider voltage potential controlWESTERN DIGITAL TECH INC·Filed 2021·Granted Mar 15, 2022·0 cites·20 claims
- 2060US10825474B2Data storage device reverse biasing head element to counter electro-migrationWESTERN DIGITAL TECH INC·Filed 2020·Granted Nov 3, 2020·0 cites·18 claims
- 2155US12322422B1Servo-write for magnetic disk media archival data storage systemWESTERN DIGITAL TECH INC·Filed 2024·Granted Jun 3, 2025·0 cites·19 claims
- 2254US10566018B2Data storage device reverse biasing head element to counter electro-migrationWESTERN DIGITAL TECH INC·Filed 2019·Granted Feb 18, 2020·0 cites·20 claims
- 2349US2008100964A1Magnetic recording system with medium having antiferromagnetic-to- ferromagnetic transition layer exchange-coupled to recording layerHITACHI GLOBAL STORAGE TECH·Filed 2006·Application pending·0 cites
- 2448US2008112080A1Magnetic write head employing multiple magnetomotive force (MMF) sourcesHITACHI GLOBAL STORAGE TECH·Filed 2006·Application pending·0 cites
- 2546US7459198B2Stress relief for electroplated filmsHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Dec 2, 2008·1 cites·25 claims
- 2645US2007019335A1Tape medium read head with unitary formation of multiple elementsHITACHI GLOBAL STORAGE TECH·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →