Inventor · disambiguated record
Wen-Chien David Hsiao
Also filed as: HSIAO WEN-CHIEN · HSIAO WEN-CHIEN D · HSIAO WEN-CHIEN DAVID
95 granted patents·13 pending applications·850 citations·filing 1997–2015
99Inventor score
Files withHITACHI GLOBAL STORAGE TECH41HGST Netherlands BV12HITACHI GLOBAL STORAGE TECH NL11HSIAO WEN-CHIEN DAVID10HSIAO WEN-CHIEN D7
Top patents by PatentIndex Score
108 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
- 0296US7835111B2Magnetic write head with upper return pole optimization for reduced trailing shield protrusionHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted Nov 16, 2010·49 cites·20 claims
- 0396US7133241B2Method and apparatus for optimizing record quality with varying track and linear density by allowing overlapping data tracksHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Nov 7, 2006·35 cites·9 claims
- 0495US7576951B2Perpendicular magnetic write head having a magnetic write pole with a concave trailing edgeHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Aug 18, 2009·35 cites·7 claims
- 0594US7848054B2Perpendicular magnetic write head having a corner notched conformal, wrap-around, trailing magnetic shield for reduced adjacent track interferenceHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Dec 7, 2010·16 cites·21 claims
- 0693US8201320B2Method for manufacturing a magnetic write head having a wrap around shield that is magnetically coupled with a leading magnetic shieldALLEN DONALD G·Filed 2009·Granted Jun 19, 2012·24 cites·9 claims
- 0793US8110085B2Assisted deposition, narrow trench damascene process for manufacturing a write pole of a magnetic write headHSIAO WEN-CHIEN DAVID·Filed 2008·Granted Feb 7, 2012·14 cites·25 claims
- 0892US8018679B2Perpendicular magnetic recording write head with slanted magnetic write poleHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Sep 13, 2011·14 cites·14 claims
- 0992US7821736B2Shaped trailing shield of a perpendicular recording write elementHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Oct 26, 2010·13 cites·12 claims
- 1092US7768744B2Perpendicular magnetic recording write head with coplanar main pole and return poles and magnetic recording systemHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted Aug 3, 2010·12 cites·19 claims
- 1191US8111479B2Perpendicular magnetic recording head having a notched trailing shieldCHEN TSUNG YUAN·Filed 2007·Granted Feb 7, 2012·11 cites·16 claims
- 1290US8233234B2Stepped main pole for perpendicular write heads in hard disk drives and method of making sameHSIAO WEN-CHIEN D·Filed 2008·Granted Jul 31, 2012·12 cites·20 claims
- 1390US8139320B2Write head having independent side shield and trailing shield throat heightHSIAO WEN-CHIEN DAVID·Filed 2007·Granted Mar 20, 2012·10 cites·3 claims
- 1490US7593183B2Magnetic write head design for reducing temperature induced protrusionHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Sep 22, 2009·10 cites·15 claims
- 1589US8218263B2Write head with different upper and lower yoke lengths and methods for making the sameALLEN DONALD G·Filed 2008·Granted Jul 10, 2012·10 cites·18 claims
- 1689US7633711B2Magnetic write head with helical coil structure using multiple materialsHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted Dec 15, 2009·11 cites·20 claims
- 1789US7154696B2Tunable fly height using magnetomechanical effect in a magnetic headHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Dec 26, 2006·24 cites·21 claims
- 1888US8320078B1Perpendicular magnetic recording write head with antiparallel-coupled laminated main pole having a tapered trailing edgeZELTSER ALEXANDER M·Filed 2012·Granted Nov 27, 2012·11 cites·20 claims
- 1988US7506431B2Method of manufacturing a perpendicular magnetic write head having a wrap-around trailing shield and a concave trailing edge main poleHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted Mar 24, 2009·8 cites·21 claims
- 2087US7788796B2Method FPR manufacturing a magnetic write headHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Sep 7, 2010·16 cites·7 claims
- 2187US7538976B2Trailing shield design for reducing wide area track erasure (water) in a perpendicular recording systemHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted May 26, 2009·7 cites·20 claims
- 2287US7072154B2Method and apparatus for providing a self-pinned bias layer that extends beyond the ends of the free layerHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Jul 4, 2006·20 cites·14 claims
- 2387US6001235ARotary plater with radially distributed plating solutionIBM·Filed 1997·Granted Dec 14, 1999·136 cites·20 claims
- 2486US8031432B2Magnetic write head having helical coil with a fin structure for reduced heat induced protrusionHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Oct 4, 2011·7 cites·14 claims
- 2585US7748103B2Method of manufacturing a perpendicular magnetic recording write head with notched trailing shieldHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Jul 6, 2010·5 cites·7 claims
- 2685US7092220B2Apparatus for enhancing thermal stability, improving biasing and reducing damage from electrostatic discharge in self-pinned abutted junction heads having a first self-pinned layer extending under the hard bias layersHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Aug 15, 2006·19 cites·18 claims
- 2785US7023660B2Localized pole tip heating device for magnetic head for hard disk driveHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Apr 4, 2006·19 cites·16 claims
- 2884US7889458B2Write head with self-cross biased pole for high speed magnetic recordingHITACHI GLOBAL STORAGE TECH NL·Filed 2006·Granted Feb 15, 2011·5 cites·10 claims
- 2984US7881019B2Two step corner recess for secondary stray field reduction in a perpendicular magnetic recording headHITACHI GLOBAL STORAGE TECH NL·Filed 2006·Granted Feb 1, 2011·6 cites·10 claims
- 3084US7538977B2Method and apparatus for providing diamagnetic flux focusing in a storage deviceHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted May 26, 2009·17 cites·17 claims
- 3183US8730617B1Tapered leading and side shields for use in a perpendicular magnetic recording headHGST Netherlands BV·Filed 2013·Granted May 20, 2014·8 cites·19 claims
- 3283US8547660B2Magnetic write head manufactured by an enhanced damascene process producing a tapered write pole with a non-magnetic spacer and non-magnetic bumpALLEN DONALD G·Filed 2009·Granted Oct 1, 2013·13 cites·6 claims
- 3383US8066893B2Method for creating a magnetic write pole having a stepped perpendicular pole via CMP-assisted liftoffBAER AMANDA·Filed 2008·Granted Nov 29, 2011·6 cites·21 claims
- 3483US7549215B2Method for manufacturing a magnetic head for perpendicular magnetic data recordingHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted Jun 23, 2009·5 cites·10 claims
- 3583US7525760B2Laminated write gap to improve writer performanceHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Apr 28, 2009·5 cites·11 claims
- 3682US8634167B2Magnetic head with self compensating dual thermal fly height controlHSIAO WEN-CHIEN D·Filed 2011·Granted Jan 21, 2014·6 cites·13 claims
- 3782US8422168B2Magnetic write head having a self-aligned side wrap-around shield with multi-angle slanted bumpHSIAO WEN-CHIEN DAVID·Filed 2008·Granted Apr 16, 2013·4 cites·10 claims
- 3881US8259412B2Thermal fly height control magnetic recording head having a novel heating element geometryHSIAO WEN-CHIEN D·Filed 2010·Granted Sep 4, 2012·6 cites·23 claims
- 3981US7050277B2Apparatus having a self-pinned abutted junction magnetic read sensor with hard bias layers formed over ends of a self-pinned layer and extending under a hard bias layerHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted May 23, 2006·14 cites·18 claims
- 4080US6826014B2Write head having first pole piece with frequency dependent variable effective throat heightIBM·Filed 2001·Granted Nov 30, 2004·14 cites·24 claims
- 4179US8349197B2Method for manufacturing a perpendicular magnetic write head having a tapered write pole and non-magnetic bump structureHITACHI GLOBAL STORAGE TECH NL·Filed 2009·Granted Jan 8, 2013·3 cites·23 claims
- 4279US8186040B2Methods for creating slanted perpendicular magnetic pole via metal liftoffBAER AMANDA·Filed 2008·Granted May 29, 2012·4 cites·19 claims
- 4379US7990652B2Perpendicular 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
- 4478US7508628B2Winged pole and shield structure for reducing stray field in a perpendicular write headHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Mar 24, 2009·14 cites·27 claims
- 4576US9412398B2Shield with uniform magnetic properties for a perpendicular magnetic recording headHGST Netherlands BV·Filed 2013·Granted Aug 9, 2016·3 cites·20 claims
- 4676US6570743B1Read head with high and low resistance lead layers wherein the high resistance lead layers are connected to a read sensor and extend perpendicular from an air bearing surface (abs) of the read head beyond a back recessed edge of the sensor where the high resistance lead layers are connected to the low resistance layersIBM·Filed 2000·Granted May 27, 2003·10 cites·10 claims
- 4774US8780499B2Magnetic write head having a residual shield seed layer for reducing overwritingHGST Netherlands BV·Filed 2012·Granted Jul 15, 2014·3 cites·22 claims
- 4874US8223462B2Magnetoresistive sensor design for signal noise pickup reduction for use with deep gap electrostatic discharge shuntGILL HARDAYAL SINGH·Filed 2008·Granted Jul 17, 2012·2 cites·13 claims
- 4974US8179634B2Perpendicular magnetic recording writer main pole having imbedded non-magnetic core and de-coupled pole tipHSIAO WEN-CHIEN DAVID·Filed 2007·Granted May 15, 2012·2 cites·6 claims
- 5074US7639453B2Perpendicular magnetic write head with shunt structure to prevent read sensor interferenceHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Dec 29, 2009·2 cites·18 claims
Showing the top 50 of 108 patent records by PatentIndex Score.
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