Inventor · disambiguated record
Lijie Guan
Also filed as: GUAN LIJIE
90 granted patents·3 pending applications·1,953 citations·filing 2003–2022
99Inventor score
Files withHEADWAY TECHNOLOGIES INC38WESTERN DIGITAL TECH INC23GUAN LIJIE8SANDISK TECHNOLOGIES LLC4HAN CHERNG-CHYI3
Top patents by PatentIndex Score
93 records- 0199US8264798B1Systems and methods for providing magnetic recording heads adapted for writing shingled tracksGUAN LIJIE·Filed 2010·Granted Sep 11, 2012·157 cites·18 claims
- 0298US10957348B2Magnetic 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
- 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
- 0598US8375564B1Method for fabricating a pole of a magnetic transducerWESTERN DIGITAL FREMONT LLC·Filed 2009·Granted Feb 19, 2013·157 cites·19 claims
- 0697US10867626B1Spin orbital torque based microwave assisted magnetic recording with dual spin hall layers or wrap around spin hall layerWESTERN DIGITAL TECH INC·Filed 2019·Granted Dec 15, 2020·22 cites·21 claims
- 0797US10861485B1Write heads configured to redirect currentWESTERN DIGITAL TECH INC·Filed 2020·Granted Dec 8, 2020·8 cites·16 claims
- 0897US8705205B1Magnetic recording head having a dual sidewall angleLI YUNFEI·Filed 2011·Granted Apr 22, 2014·152 cites·17 claims
- 0997US8257597B1Double rie damascene process for nose length controlGUAN LIJIE·Filed 2010·Granted Sep 4, 2012·147 cites·15 claims
- 1097US7872835B2Optimized write pole flare angle for side shield or semi side shield PMR writer applicationHEADWAY TECHNOLOGIES INC·Filed 2007·Granted Jan 18, 2011·40 cites·8 claims
- 1196US11557314B1Write heads having conducting side gap for directing currentWESTERN DIGITAL TECH INC·Filed 2019·Granted Jan 17, 2023·22 cites·22 claims
- 1296US8238059B1PMR write head with narrow gap for minimal internal flux lossTANG YUHUI·Filed 2011·Granted Aug 7, 2012·71 cites·24 claims
- 1396US8164855B1Method and system for providing a write pole in an energy assisted magnetic recording disk driveGIBBONS MATTHEW R·Filed 2009·Granted Apr 24, 2012·189 cites·28 claims
- 1496US8035930B2Perpendicular magnetic recording write head with a side shieldHEADWAY TECHNOLOGIES INC·Filed 2007·Granted Oct 11, 2011·37 cites·9 claims
- 1596US7804666B2Composite shield structure of PMR writer for high track densityHEADWAY TECHNOLOGIES INC·Filed 2007·Granted Sep 28, 2010·27 cites·20 claims
- 1696US7322095B2Process of manufacturing a four-sided shield structure for a perpendicular write headHEADWAY TECHNOLOGIES INC·Filed 2004·Granted Jan 29, 2008·73 cites·15 claims
- 1795US11264052B1Area density capacity improvement with negative anisotropic magnetic material trailing shield notchWESTERN DIGITAL TECH INC·Filed 2021·Granted Mar 1, 2022·2 cites·20 claims
- 1895US10777219B1Write heads configured to redirect currentWESTERN DIGITAL TECH INC·Filed 2019·Granted Sep 15, 2020·16 cites·20 claims
- 1995US7978431B2Method to make a perpendicular magnetic recording head with a bottom side shieldHEADWAY TECHNOLOGIES INC·Filed 2007·Granted Jul 12, 2011·20 cites·16 claims
- 2094US10891975B1Magnetic head with assisted magnetic recording and method of making thereofSANDISK TECHNOLOGIES LLC·Filed 2019·Granted Jan 12, 2021·11 cites·16 claims
- 2194US10891974B1Magnetic head with current assisted magnetic recording and method of making thereofSANDISK TECHNOLOGIES LLC·Filed 2018·Granted Jan 12, 2021·16 cites·22 claims
- 2294US10679650B2Current-assisted magnetic recording write head with improved write gap structureWESTERN DIGITAL TECH INC·Filed 2019·Granted Jun 9, 2020·17 cites·20 claims
- 2394US8498079B1Superior performance head design with minimized ATE and WATESONG SUPING·Filed 2012·Granted Jul 30, 2013·39 cites·31 claims
- 2494US7916425B2Magnetic head having angled pole portionsHEADWAY TECHNOLOGIES INC·Filed 2007·Granted Mar 29, 2011·18 cites·24 claims
- 2594US7777988B2Perpendicular write head with tapered main poleHEADWAY TECHNOLOGIES INC·Filed 2009·Granted Aug 17, 2010·14 cites·3 claims
- 2693US11373675B2Magnetic head with assisted magnetic recordingWESTERN DIGITAL TECH INC·Filed 2021·Granted Jun 28, 2022·3 cites·19 claims
- 2793US10789977B1Spin orbital torque via spin hall effect based energy assisted magnetic recordingWESTERN DIGITAL TECH INC·Filed 2019·Granted Sep 29, 2020·10 cites·23 claims
- 2893US8284516B1PMR write head with assisted magnetic layerTANG YUHUI·Filed 2011·Granted Oct 9, 2012·26 cites·23 claims
- 2993US7599152B2Magnetic read-write head shield that prevents flux concentration at edges close to the ABSHEADWAY TECHNOLOGIES INC·Filed 2005·Granted Oct 6, 2009·14 cites·1 claims
- 3092US11017802B2Magnetic head with assisted magnetic recording and method of making thereofWESTERN DIGITAL TECH INC·Filed 2020·Granted May 25, 2021·4 cites·20 claims
- 3192US8564903B2Writer with an AFM write gapMIN TAI·Filed 2011·Granted Oct 22, 2013·17 cites·7 claims
- 3292US8379347B2Perpendicular shield pole writer with tapered main pole and tapered non-magnetic top shaping layerHEADWAY TECHNOLOGIES INC·Filed 2012·Granted Feb 19, 2013·14 cites·6 claims
- 3392US8094419B2Optimized write pole flare angle for side shield or semi side shield PMR writer applicationGUAN LIJIE·Filed 2011·Granted Jan 10, 2012·17 cites·3 claims
- 3491US10832710B1Magnetic recording devices using virtual side shields for improved areal density capabilityWESTERN DIGITAL TECH INC·Filed 2019·Granted Nov 10, 2020·7 cites·20 claims
- 3591US8023231B2Composite shield structure of PMR writer for high track densityHEADWAY TECHNOLOGIES INC·Filed 2010·Granted Sep 20, 2011·12 cites·12 claims
- 3690US10896690B1Magnetic head with current assisted magnetic recording and method of making thereofSANDISK TECHNOLOGIES LLC·Filed 2018·Granted Jan 19, 2021·10 cites·10 claims
- 3789US11087783B1Magnetic recording head soft error rate improvement with compact main poleWESTERN DIGITAL TECH INC·Filed 2020·Granted Aug 10, 2021·3 cites·23 claims
- 3889US9082433B1PMR writer with patterned shields for adjacent track erasure improvementHEADWAY TECHNOLOGIES INC·Filed 2014·Granted Jul 14, 2015·11 cites·22 claims
- 3989US8056213B2Method to make PMR head with integrated side shield (ISS)HAN CHERNG-CHYI·Filed 2008·Granted Nov 15, 2011·8 cites·14 claims
- 4088US7609479B2Magnetic head for perpendicular magnetic recording and method of manufacturing sameHEADWAY TECHNOLOGIES INC·Filed 2006·Granted Oct 27, 2009·9 cites·28 claims
- 4187US8896965B2Non-uniform write gap perpendicular writer for shingle writingHEADWAY TECHNOLOGIES INC·Filed 2013·Granted Nov 25, 2014·2 cites·6 claims
- 4287US8542463B2Non-uniform write gap perpendicular writer for shingle writingGUAN LIJIE·Filed 2011·Granted Sep 24, 2013·7 cites·5 claims
- 4387US7417825B2Thin film magnetic head structure, adapted to manufacture a thin film magnetic headHEADWAY TECHNOLOGIES INC·Filed 2004·Granted Aug 26, 2008·19 cites·12 claims
- 4486US9013830B2Non-uniform write gap perpendicular writer for shingle writingHEADWAY TECHNOLOGIES INC·Filed 2014·Granted Apr 21, 2015·5 cites·6 claims
- 4586US8189295B2Perpendicular magnetic recording head with a bottom side shieldHAN CHERNG-CHYI·Filed 2011·Granted May 29, 2012·8 cites·8 claims
- 4685US11227627B1Energy assisted magnetic recording head having improved areal density capabilityWESTERN DIGITAL TECH INC·Filed 2020·Granted Jan 18, 2022·2 cites·23 claims
- 4785US11017801B1Magnetic head with assisted magnetic recording and method of making thereofSANDISK TECHNOLOGIES LLC·Filed 2019·Granted May 25, 2021·5 cites·20 claims
- 4885US7921544B2Method of manufacturing a thin film magnetic head structureHEADWAY TECHNOLOGIES INC·Filed 2008·Granted Apr 12, 2011·5 cites·3 claims
- 4985US7777987B2Perpendicular write head with tapered main poleHEADWAY TECHNOLOGIES INC·Filed 2009·Granted Aug 17, 2010·10 cites·10 claims
- 5085US7106554B2Perpendicular magnetic writer with magnetic potential control shieldHEADWAY TECHNOLOGIES INC·Filed 2003·Granted Sep 12, 2006·19 cites·13 claims
Showing the top 50 of 93 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →