Inventor · disambiguated record
Changqing Shi
Also filed as: SHI CHANGQING
45 granted patents·1 pending application·1,721 citations·filing 2004–2022
98Inventor score
Files withWESTERN DIGITAL TECH INC13HITACHI GLOBAL STORAGE TECH NL7SANDISK TECHNOLOGIES LLC4SHI CHANGQING4HITACHI GLOBAL STORAGE TECH3
Top patents by PatentIndex Score
46 records- 0198US10957348B2Magnetic recording write head with selected write gap current direction for minimization of cross-track interferenceWESTERN DIGITAL TECH INC·Filed 2020·Granted Mar 23, 2021·13 cites·20 claims
- 0298US8717709B1System for calibrating an electronic lapping guide for a beveled pole in a magnetic recording transducerWESTERN DIGITAL FREMONT LLC·Filed 2012·Granted May 6, 2014·138 cites·3 claims
- 0398US8444866B1Method and system for providing a perpendicular magnetic recording pole with a multi-layer side gapGUAN LIJIE·Filed 2010·Granted May 21, 2013·153 cites·21 claims
- 0498US8443510B1Method for utilizing an electronic lapping guide for a beveled pole in a magnetic recording transducerSHI CHANGQING·Filed 2009·Granted May 21, 2013·161 cites·14 claims
- 0598US8409453B1Method and system for providing a wrap-around shield using a patterned seed layerJIANG MING·Filed 2010·Granted Apr 2, 2013·154 cites·24 claims
- 0698US8262919B1Method and system for providing a perpendicular magnetic recording pole using multiple chemical mechanical planarizationsLUO GUANGHONG·Filed 2010·Granted Sep 11, 2012·151 cites·16 claims
- 0797US10861485B1Write heads configured to redirect currentWESTERN DIGITAL TECH INC·Filed 2020·Granted Dec 8, 2020·8 cites·16 claims
- 0897US8291743B1Method and system for calibrating an electronic lapping guide for a beveled pole in a magnetic recording transducerSHI CHANGQING·Filed 2009·Granted Oct 23, 2012·163 cites·11 claims
- 0997US8257597B1Double rie damascene process for nose length controlGUAN LIJIE·Filed 2010·Granted Sep 4, 2012·147 cites·15 claims
- 1097US8254060B1Straight top main pole for PMR bevel writerSHI CHANGQING·Filed 2009·Granted Aug 28, 2012·161 cites·17 claims
- 1196US11557314B1Write heads having conducting side gap for directing currentWESTERN DIGITAL TECH INC·Filed 2019·Granted Jan 17, 2023·22 cites·22 claims
- 1296US8758083B1Method and system for adjusting lapping of a transducer using a disk windageRUDY STEVEN C·Filed 2010·Granted Jun 24, 2014·38 cites·11 claims
- 1395US11264052B1Area density capacity improvement with negative anisotropic magnetic material trailing shield notchWESTERN DIGITAL TECH INC·Filed 2021·Granted Mar 1, 2022·2 cites·20 claims
- 1495US10777219B1Write heads configured to redirect currentWESTERN DIGITAL TECH INC·Filed 2019·Granted Sep 15, 2020·16 cites·20 claims
- 1595US8068312B2Perpendicular magnetic write head with stitched notched trailing shieldJIANG MING·Filed 2007·Granted Nov 29, 2011·41 cites·8 claims
- 1695US7982989B1Method and system for measuring magnetic interference widthWESTERN DIGITAL FREMONT LLC·Filed 2009·Granted Jul 19, 2011·158 cites·21 claims
- 1795US7920358B2Perpendicular magnetic recording write head with magnetic shields separated by nonmagnetic layersHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Apr 5, 2011·28 cites·16 claims
- 1895US7889456B2Perpendicular magnetic recording write head with flux shaping layers on the write pole and magnetic recording system incorporating the write headHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Feb 15, 2011·31 cites·21 claims
- 1994US10891975B1Magnetic head with assisted magnetic recording and method of making thereofSANDISK TECHNOLOGIES LLC·Filed 2019·Granted Jan 12, 2021·11 cites·16 claims
- 2094US10891974B1Magnetic head with current assisted magnetic recording and method of making thereofSANDISK TECHNOLOGIES LLC·Filed 2018·Granted Jan 12, 2021·16 cites·22 claims
- 2194US7768743B2Perpendicular magnetic recording write head with trailing shield having notch and throat height defined by nonmagnetic pad layerHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted Aug 3, 2010·21 cites·17 claims
- 2293US11373675B2Magnetic head with assisted magnetic recordingWESTERN DIGITAL TECH INC·Filed 2021·Granted Jun 28, 2022·3 cites·19 claims
- 2393US8000059B2Perpendicular magnetic write head with a thin wrap around magnetic shieldHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Aug 16, 2011·19 cites·4 claims
- 2492US11017802B2Magnetic head with assisted magnetic recording and method of making thereofWESTERN DIGITAL TECH INC·Filed 2020·Granted May 25, 2021·4 cites·20 claims
- 2591US8111479B2Perpendicular magnetic recording head having a notched trailing shieldCHEN TSUNG YUAN·Filed 2007·Granted Feb 7, 2012·11 cites·16 claims
- 2690US10896690B1Magnetic head with current assisted magnetic recording and method of making thereofSANDISK TECHNOLOGIES LLC·Filed 2018·Granted Jan 19, 2021·10 cites·10 claims
- 2789US11087783B1Magnetic recording head soft error rate improvement with compact main poleWESTERN DIGITAL TECH INC·Filed 2020·Granted Aug 10, 2021·3 cites·23 claims
- 2886US7788798B2Method for manufacturing a perpendicular magnetic write head with wrap around magnetic trailing and side shieldsHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted Sep 7, 2010·7 cites·10 claims
- 2985US11227627B1Energy assisted magnetic recording head having improved areal density capabilityWESTERN DIGITAL TECH INC·Filed 2020·Granted Jan 18, 2022·2 cites·23 claims
- 3085US11017801B1Magnetic head with assisted magnetic recording and method of making thereofSANDISK TECHNOLOGIES LLC·Filed 2019·Granted May 25, 2021·5 cites·20 claims
- 3184US8049989B2Magnetic head for perpendicular recording having stepped wrap around shield with independent control of write pole track width and flare point dimensionsHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Nov 1, 2011·6 cites·10 claims
- 3284US7889458B2Write 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
- 3379US7990652B2Perpendicular 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
- 3474US8179634B2Perpendicular 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
- 3572US10699734B2Magnetic recording write head with selected write gap current direction for minimization of cross-track interferenceWESTERN DIGITAL TECH INC·Filed 2019·Granted Jun 30, 2020·2 cites·20 claims
- 3671US11657835B2Magnetic head with assisted magnetic recording comprising an electrically conductive, non-magnetic materialWESTERN DIGITAL TECH INC·Filed 2022·Granted May 23, 2023·0 cites·20 claims
- 3770US11615806B2Magnetic head with assisted magnetic recordingWESTERN DIGITAL TECH INC·Filed 2022·Granted Mar 28, 2023·0 cites·19 claims
- 3866US11557315B2Energy assisted magnetic recording head having improved areal density capabilityWESTERN DIGITAL TECH INC·Filed 2021·Granted Jan 17, 2023·0 cites·20 claims
- 3961US8893376B1Method of forming a straight top main pole for PMR bevel writerSHI CHANGQING·Filed 2012·Granted Nov 25, 2014·1 cites·10 claims
- 4055US9087537B1System for adjusting lapping of a transducer using a disk windageWESTERN DIGITAL FREMONT LLC·Filed 2014·Granted Jul 21, 2015·0 cites·9 claims
- 4154US2006034012A1Self-aligned coil process in magnetic recording headsLAM TERENCE T·Filed 2005·Application pending·0 cites
- 4252US7927724B2Magnetic recording media with orthogonal anisotropy enhancement or bias layerHITACHI GLOBAL STORAGE TECH NL·Filed 2004·Granted Apr 19, 2011·1 cites·9 claims
- 4350US8331058B2Method 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
- 4444US7196881B2Adaptive domain stabilization for magnetic recording read sensorsHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Mar 27, 2007·2 cites·6 claims
- 4542US8826515B2Self-aligned coil process in magnetic recording headsLAM TERENCE TIN-LOK·Filed 2010·Granted Sep 9, 2014·0 cites·8 claims
- 4634US8276257B2Method for making coplanar write head pole tipsLAM TERENCE TIN-LOK·Filed 2004·Granted Oct 2, 2012·0 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →