Inventor · disambiguated record
Quan-Chiu Harry Lam
Also filed as: LAM QUAN-CHIU H · LAM QUAN-CHIU HARRY · Lam Quan-Chiu
22 granted patents·3 pending applications·264 citations·filing 2001–2023
95Inventor score
Files withHGST Netherlands BV7HITACHI GLOBAL STORAGE TECH5WESTERN DIGITAL TECH INC5IBM3HSIAO WEN-CHIEN DAVID2
Top patents by PatentIndex Score
25 records- 0196US8120874B2Perpendicular write head having a modified wrap-around shield to improve overwrite, adjacent track interference and magnetic core width dependence on skew angleHSIAO WEN-CHIEN DAVID·Filed 2007·Granted Feb 21, 2012·47 cites·19 claims
- 0295US7237320B2Methods of orienting an easy axis of a high-aspect ratio write head for improved writing efficiencyHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Jul 3, 2007·78 cites·27 claims
- 0393US7072142B2Apparatus for providing transverse magnetic bias proximate to a pole tip to speed up the switching time of the pole-tip during the writing operationHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Jul 4, 2006·39 cites·27 claims
- 0491US7070716B2Method for providing transverse magnetic bias proximate to a pole tip to speed up the switching time of the pole-tip during the writing operationHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Jul 4, 2006·33 cites·3 claims
- 0587US11682417B1Asymmetric write head shields compatible with dual-free-layer (DFL) readersWESTERN DIGITAL TECH INC·Filed 2022·Granted Jun 20, 2023·2 cites·19 claims
- 0685US7023660B2Localized pole tip heating device for magnetic head for hard disk driveHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Apr 4, 2006·19 cites·16 claims
- 0780US6826014B2Write head having first pole piece with frequency dependent variable effective throat heightIBM·Filed 2001·Granted Nov 30, 2004·14 cites·24 claims
- 0879US11676627B2Magnetic recording head with stable magnetization of shieldsWESTERN DIGITAL TECH INC·Filed 2021·Granted Jun 13, 2023·1 cites·19 claims
- 0979US7990652B2Perpendicular magnetic write head with stepped write pole for reduced MCW dependency on skew angleHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Aug 2, 2011·3 cites·17 claims
- 1076US9412398B2Shield with uniform magnetic properties for a perpendicular magnetic recording headHGST Netherlands BV·Filed 2013·Granted Aug 9, 2016·3 cites·20 claims
- 1174US8780499B2Magnetic write head having a residual shield seed layer for reducing overwritingHGST Netherlands BV·Filed 2012·Granted Jul 15, 2014·3 cites·22 claims
- 1273US6721129B2Low frequency attenuator in a magnetic write headIBM·Filed 2001·Granted Apr 13, 2004·9 cites·23 claims
- 1372US9099110B1Real time writer shields magnetization optimization for FTI improvementHGST Netherlands BV·Filed 2014·Granted Aug 4, 2015·2 cites·20 claims
- 1469US12148454B2Magnetic recording head with stable magnetization of shieldsWESTERN DIGITAL TECH INC·Filed 2023·Granted Nov 19, 2024·0 cites·20 claims
- 1569US8068311B2Perpendicular magnetic write head having a novel trailing return pole for reduced wide-area-track-erasureHSIAO WEN-CHIEN DAVID·Filed 2008·Granted Nov 29, 2011·1 cites·22 claims
- 1665US9183853B2Magnetic write head having a stacked coil architecture for high data rate performanceHGST Netherlands BV·Filed 2013·Granted Nov 10, 2015·1 cites·22 claims
- 1763US6785098B2First pole piece with frequency dependent variable effective throat heightIBM·Filed 2002·Granted Aug 31, 2004·5 cites·29 claims
- 1860US11894028B2Magnetic recording head with trailing shield having multiple throat-heightsWESTERN DIGITAL TECH INC·Filed 2022·Granted Feb 6, 2024·0 cites·20 claims
- 1959US2015325258A1Stiff discrete insert array for thermal ptr management with desired induced stress state that reduces tendency for write pole erasureHGST Netherlands BV·Filed 2015·Application pending·0 cites
- 2057US9099116B2Stiff discrete insert array for thermal PTR management with desired induced stress state that reduces tendency for write pole erasureHGST Netherlands BV·Filed 2013·Granted Aug 4, 2015·0 cites·5 claims
- 2151US11657837B2Magnetic recording head with trailing shield having multiple throat-heightsWESTERN DIGITAL TECH INC·Filed 2021·Granted May 23, 2023·0 cites·19 claims
- 2250US8331058B2Method and apparatus for providing a write head with an improved pole tip to improve overwrite and/or adjacent track interferenceGIDER SAVAS·Filed 2004·Granted Dec 11, 2012·2 cites·28 claims
- 2350US7446966B2Method for precompensation/write-current latching to improve error rateHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Nov 4, 2008·2 cites·27 claims
- 2439US2012162821A1Write head with rotational write fieldLAM QUAN-CHIU HARRY·Filed 2010·Application pending·0 cites
- 2532US2018012627A1Managing far and near track erasure by dynamic control of a write current parameter of a magnetic disk driveHGST Netherlands BV·Filed 2016·Application pending·0 cites
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