Inventor · disambiguated record
Hung-Chin Guthrie
Also filed as: GUTHRIE HUNG-CHIN
38 granted patents·3 pending applications·322 citations·filing 1999–2011
97Inventor score
Top patents by PatentIndex Score
41 records- 0196US7477481B2Bilayer trailing shield gap for perpendicular headHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Jan 13, 2009·31 cites·20 claims
- 0295US7576951B2Perpendicular 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
- 0394US7768743B2Perpendicular 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
- 0494US7469467B2Method of manufacturing a perpendicular write headHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Dec 30, 2008·24 cites·9 claims
- 0594US7441325B2Perpendicular head with trailing shield and rhodium gap processHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Oct 28, 2008·41 cites·13 claims
- 0692US8066892B2Method for manufacturing a perpendicular magnetic write head with a wrap around shieldGUTHRIE HUNG-CHIN·Filed 2008·Granted Nov 29, 2011·24 cites·20 claims
- 0792US7804662B2Perpendicular magnetic recording head including wrap around shield with notched top write gap and method of fabricating the sameHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Sep 28, 2010·14 cites·17 claims
- 0886US7788798B2Method 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
- 0983US7648731B2Fabricating perpendicular write elements in perpendicular magnetic recording headsHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Jan 19, 2010·5 cites·21 claims
- 1082US7029376B1Process of fabricating write pole in magnetic recording head using rhodium CMP stop layerHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Apr 18, 2006·10 cites·21 claims
- 1181US7396768B2Copper damascene chemical mechanical polishing (CMP) for thin film head writer fabricationHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Jul 8, 2008·5 cites·13 claims
- 1280US7881010B2Process for self-aligned flare point and shield throat definition prior to main pole patterningHITACHI GLOBAL STORAGE TECH NL·Filed 2007·Granted Feb 1, 2011·4 cites·20 claims
- 1379US7279424B2Method for fabricating thin film magnetic heads using CMP with polishing stop layerHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Oct 9, 2007·13 cites·18 claims
- 1475US6131271AMethod of planarizing first pole piece layer of write head by lapping without delamination of first pole piece layer from wafer substrateIBM·Filed 1999·Granted Oct 17, 2000·28 cites·21 claims
- 1574US7757380B2Methods for the manufacture of notched trailing shieldsHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Jul 20, 2010·7 cites·8 claims
- 1673US7593186B2P1 write pole with shoulder formationHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Sep 22, 2009·2 cites·12 claims
- 1771US7509729B2Method for making a perpendicular magnetic recording write headHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Mar 31, 2009·6 cites·6 claims
- 1869US7722436B2Run-to-run control of backside pressure for CMP radial uniformity optimization based on center-to-edge modelHITACHI GLOBAL STORAGE TECH·Filed 2007·Granted May 25, 2010·3 cites·12 claims
- 1968US8108985B2Method for manufacturing a perpendicular magnetic write headZHENG YI·Filed 2007·Granted Feb 7, 2012·4 cites·6 claims
- 2068US7081041B1Manufacturing method for forming a write head top pole using chemical mechanical polishing with a DLC stop layerHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Jul 25, 2006·4 cites·12 claims
- 2167US7264535B2Run-to-run control of backside pressure for CMP radial uniformity optimization based on center-to-edge modelHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Sep 4, 2007·10 cites·21 claims
- 2265US7220167B2Gentle chemical mechanical polishing (CMP) liftoff processHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted May 22, 2007·3 cites·25 claims
- 2365US7108588B1System, method, and apparatus for wetting slurry delivery tubes in a chemical mechanical polishing process to prevent clogging thereofHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Sep 19, 2006·3 cites·7 claims
- 2461US7075094B2System, method, and apparatus for ion beam etching process stability using a reference for time scaling subsequent stepsHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Jul 11, 2006·7 cites·13 claims
- 2555US6984613B1Post chemical mechanical polishing cleaning solution for 2.45T CoFeNi structures of thin film magnetic headsHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Jan 10, 2006·2 cites·18 claims
- 2653US7675709B2Magnetic write head having a stair notched, steep shouldered pole and a write gap bumpHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted Mar 9, 2010·0 cites·10 claims
- 2752US8557708B2Methods for fabricating a magnetic head reader using a chemical mechanical polishing (CMP) process for sensor stripe height patterningGUTHRIE HUNG-CHIN·Filed 2007·Granted Oct 15, 2013·0 cites·20 claims
- 2852US7514016B2Methodology of chemical mechanical nanogrinding for ultra precision finishing of workpiecesHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Apr 7, 2009·1 cites·9 claims
- 2952US7215511B2Magnetic write head with gap termination less than half distance between pedestal and back gapHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted May 8, 2007·1 cites·6 claims
- 3051US7551397B2Magnetic write head having a first magnetic pole with a self aligned stepped notchHITACHI GLOBAL STORAGE TECH·Filed 2005·Granted Jun 23, 2009·0 cites·8 claims
- 3151US7287314B2One step copper damascene CMP process and slurryHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Oct 30, 2007·3 cites·1 claims
- 3250US8503131B2Perpendicular magnetic write head having a novel shield structureZHENG YI·Filed 2011·Granted Aug 6, 2013·0 cites·6 claims
- 3350US7374621B2System and method for cleaning chemistry and processing during thin film magnetic head wafer fabricationHITACHI GLOBAL STORAGE TECH·Filed 2006·Granted May 20, 2008·0 cites·17 claims
- 3449US7217666B2Reactive ion milling/RIE assisted CMPHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted May 15, 2007·2 cites·17 claims
- 3544US6835117B1Endpoint detection in chemical-mechanical polishing of patterned wafers having a low pattern densityIBM·Filed 2003·Granted Dec 28, 2004·2 cites·18 claims
- 3643US2007035878A1Perpendicular head with self-aligned notching trailing shield processGUTHRIE HUNG-CHIN·Filed 2005·Application pending·0 cites
- 3741US7306638B2Chemical mechanical polishing process for 2.45T CoFeNi structures of thin film magnetic headsHITACHI GLOBAL STORAGE TECH·Filed 2004·Granted Dec 11, 2007·0 cites·10 claims
- 3840US2006098337A1Tungsten heat sink structures in a thin film magnetic headGUTHRIE HUNG-CHIN·Filed 2004·Application pending·0 cites
- 3939US7144518B2CMP for corrosion-free CoFe elements for magnetic headsHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Dec 5, 2006·0 cites·8 claims
- 4035US8500916B2Method for aligning wafers within wafer processing equipmentFENG JIAN-HUEI·Filed 2004·Granted Aug 6, 2013·0 cites·5 claims
- 4131US2006066333A1System and method for aligning wafersFENG JIAN-HUEI·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →