Inventor · disambiguated record
Kochan Ju
Also filed as: JU KOCHAN
140 granted patents·2 pending applications·2,911 citations·filing 1980–2015
99Inventor score
Top patents by PatentIndex Score
142 records- 0199US6773515B2FeTa nano-oxide layer as a capping layer for enhancement of giant magnetoresistance in bottom spin valve structuresHEADWAY TECHNOLOGIES INC·Filed 2002·Granted Aug 10, 2004·120 cites·11 claims
- 0298US9337415B1Perpendicular spin transfer torque (STT) memory cell with double MgO interface and CoFeB layer for enhancement of perpendicular magnetic anisotropyHGST Netherlands BV·Filed 2015·Granted May 10, 2016·66 cites·13 claims
- 0397US7477491B2GMR device having an improved free layerHEADWAY TECHNOLOGIES INC·Filed 2005·Granted Jan 13, 2009·42 cites·13 claims
- 0497US7262941B2FeTa nano-oxide layer as a capping layer for enhancement of giant magnetoresistance in bottom spin valve structuresHEADWAY TECHNOLOGIES INC·Filed 2004·Granted Aug 28, 2007·108 cites·22 claims
- 0597US5802700AMethod of making a planarized thin film magnetic write head with submicron trackwidthIBM·Filed 1995·Granted Sep 8, 1998·132 cites·17 claims
- 0697US5652687APlanarized thin film magnetic write head with submicron trackwidthIBM·Filed 1995·Granted Jul 29, 1997·128 cites·41 claims
- 0796US7285836B2Magnetic random access memory with stacked memory cells having oppositely-directed hard-axis biasingMAGLABS INC·Filed 2005·Granted Oct 23, 2007·57 cites·31 claims
- 0896US6998150B2Method of adjusting CoFe free layer magnetostrictionHEADWAY TECHNOLOGIES INC·Filed 2003·Granted Feb 14, 2006·84 cites·17 claims
- 0996US5285340AThin film magnetic head with conformable pole tipsIBM·Filed 1992·Granted Feb 8, 1994·93 cites·6 claims
- 1095US7042682B2Fully shielded perpendicular recoding writerHEADWAY TECHNOLOGIES INC·Filed 2003·Granted May 9, 2006·56 cites·32 claims
- 1195US6292336B1Giant magnetoresistive (GMR) sensor element with enhanced magnetoresistive (MR) coefficientHEADWAY TECHNOLOGIES INC·Filed 1999·Granted Sep 18, 2001·116 cites·20 claims
- 1295US5452165AClose packed magnetic head linear arrayIBM·Filed 1994·Granted Sep 19, 1995·78 cites·23 claims
- 1395US5079663AMagnetoresistive sensor with track following capabilityIBM·Filed 1990·Granted Jan 7, 1992·78 cites·13 claims
- 1494US6322640B1Multiple thermal annealing method for forming antiferromagnetic exchange biased magnetoresistive (MR) sensor elementHEADWAY TECHNOLOGIES INC·Filed 2000·Granted Nov 27, 2001·59 cites·17 claims
- 1593US7453720B2Magnetic random access memory with stacked toggle memory cells having oppositely-directed easy-axis biasingMAGLABS INC·Filed 2005·Granted Nov 18, 2008·33 cites·26 claims
- 1693US6882509B2GMR configuration with enhanced spin filteringHEADWAY TECHNOLOGIES INC·Filed 2004·Granted Apr 19, 2005·32 cites·12 claims
- 1793US6729014B2Magnetic assist read track-width definition for a lead overlay top spin-valve GMR headHEADWAY TECHNOLOGIES INC·Filed 2001·Granted May 4, 2004·33 cites·21 claims
- 1892US9001473B1TMR/CPP reader for narrow reader gap applicationHGST Netherlands BV·Filed 2014·Granted Apr 7, 2015·17 cites·20 claims
- 1992US7180712B1Shield structure design to improve the stability of an MR headHEADWAY TECHNOLOGIES INC·Filed 2000·Granted Feb 20, 2007·37 cites·8 claims
- 2092US6888703B2Multilayered structures comprising magnetic nano-oxide layers for current perpindicular to plane GMR headsHEADWAY TECHNOLOGIES INC·Filed 2001·Granted May 3, 2005·33 cites·10 claims
- 2191US6770382B1GMR configuration with enhanced spin filteringHEADWAY TECHNOLOGIES INC·Filed 1999·Granted Aug 3, 2004·63 cites·12 claims
- 2291US6430015B2Method of fabrication of striped magnetoresistive (SMR) and dual stripe magnetoresistive (DSMR) heads with anti-parallel exchange configurationHEADWAY TECHNOLOGIES INC·Filed 2001·Granted Aug 6, 2002·29 cites·20 claims
- 2391US5719730ALow fringe-field and narrow write-track magneto-resistive (MR) magnetic read-write headHEADWAY TECHNOLOGIES INC·Filed 1996·Granted Feb 17, 1998·83 cites·20 claims
- 2491US5285339AMagnetoresistive read transducer having improved bias profileIBM·Filed 1992·Granted Feb 8, 1994·55 cites·19 claims
- 2590US8941954B2Magnetic sensor with extended pinned layer and partial wrap around shieldHGST Netherlands BV·Filed 2012·Granted Jan 27, 2015·13 cites·15 claims
- 2690US7675718B2Narrow track CPP head with bias cancellationHEADWAY TECHNOLOGIES INC·Filed 2006·Granted Mar 9, 2010·8 cites·16 claims
- 2790US6857180B2Method for fabricating a patterned synthetic longitudinal exchange biased GMR sensorHEADWAY TECHNOLOGIES INC·Filed 2002·Granted Feb 22, 2005·33 cites·11 claims
- 2890US6449131B2Canted longitudinal patterned exchange biased dual-stripe magnetoresistive (DSMR) sensor element and method for fabrication thereofHEADWAY TECHNOLOGIES INC·Filed 2001·Granted Sep 10, 2002·37 cites·6 claims
- 2989US6985337B2Multilayered structures comprising magnetic nano-oxide layers for current perpendicular to plane GMR headsHEADWAY TECHNOLOGIES INC·Filed 2005·Granted Jan 10, 2006·6 cites·8 claims
- 3089US6953601B2Synthetic free layer for CPP GMRHEADWAY TECHNOLOGIES INC·Filed 2002·Granted Oct 11, 2005·23 cites·12 claims
- 3189US6581272B1Method for forming a bottom spin valve magnetoresistive sensor elementHEADWAY TECHNOLOGIES INC·Filed 2002·Granted Jun 24, 2003·24 cites·22 claims
- 3289US6103136AMethod for forming a soft adjacent layer (SAL) magnetoresistive (MR) sensor element with transversely magnetically biased soft adjacent layer (SAL)HEADWAY TECHNOLOGIES INC·Filed 1998·Granted Aug 15, 2000·62 cites·8 claims
- 3388US7111386B2Lead plating method for GMR head manufactureHEADWAY TECHNOLOGIES INC·Filed 2005·Granted Sep 26, 2006·7 cites·8 claims
- 3488US6992910B1Magnetic random access memory with three or more stacked toggle memory cells and method for writing a selected cellMAGLABS INC·Filed 2005·Granted Jan 31, 2006·28 cites·16 claims
- 3586US7006337B2Multilayered structures comprising magnetic nano-oxide layers for current perpendicular to plane GMR headsHEADWAY TECHNOLOGIES INC·Filed 2005·Granted Feb 28, 2006·8 cites·17 claims
- 3686US6937497B1Magnetic random access memory with stacked toggle memory cellsMAGLABS INC·Filed 2004·Granted Aug 30, 2005·54 cites·39 claims
- 3786US6524491B1Double plate-up process for fabrication of composite magnetoresistive shared polesHEADWAY TECHNOLOGIES INC·Filed 1999·Granted Feb 25, 2003·49 cites·13 claims
- 3885US7106554B2Perpendicular magnetic writer with magnetic potential control shieldHEADWAY TECHNOLOGIES INC·Filed 2003·Granted Sep 12, 2006·19 cites·13 claims
- 3985US7016168B2Method of increasing CPP GMR in a spin valve structureHEADWAY TECHNOLOGIES INC·Filed 2003·Granted Mar 21, 2006·20 cites·25 claims
- 4085US6204071B1Method of fabrication of striped magnetoresistive (SMR) and dual stripe magnetoresistive (DSMR) heads with anti-parallel exchange configurationHEADWAY TECHNOLOGIES INC·Filed 1999·Granted Mar 20, 2001·36 cites·14 claims
- 4185US5843521APhotoresist frame plated magnetic transducer pole layer employing high magnetic permeability seed layerHEADWAY TECHNOLOGIES INC·Filed 1997·Granted Dec 1, 1998·45 cites·10 claims
- 4285US5684658AHigh track density dual stripe magnetoresistive (DSMR) headHEADWAY TECHNOLOGIES INC·Filed 1996·Granted Nov 4, 1997·46 cites·16 claims
- 4384US7506430B2Process to manufacture narrow track CPP head with bias cancellationHEADWAY TECHNOLOGIES INC·Filed 2006·Granted Mar 24, 2009·4 cites·10 claims
- 4484US6683762B2CPP GMR device with inverse GMR materialHEADWAY TECHNOLOGIES INC·Filed 2002·Granted Jan 27, 2004·18 cites·37 claims
- 4583US7173848B2Magnetic random access memory with memory cell stacks having more than two magnetic statesMEGLABS INC·Filed 2005·Granted Feb 6, 2007·19 cites·21 claims
- 4683US7134184B2Process of manufacturing a narrow track CCP head with bias cancellationHEADWAY TECHNOLOGIES INC·Filed 2003·Granted Nov 14, 2006·12 cites·6 claims
- 4783US6903904B2CPP GMR synthetic spin valve enhancementHEADWAY TECHNOLOGIES INC·Filed 2002·Granted Jun 7, 2005·16 cites·34 claims
- 4883US6396671B1Ruthenium bias compensation layer for spin valve head and process of manufacturingHEADWAY TECHNOLOGIES INC·Filed 2000·Granted May 28, 2002·19 cites·17 claims
- 4983US6393692B1Method of manufacture of a composite shared pole design for magnetoresistive merged headsHEADWAY TECHNOLOGIES INC·Filed 1999·Granted May 28, 2002·35 cites·22 claims
- 5083US5375023ASubmicron thin film inductive head with self-aligned staggered pole-tipsIBM·Filed 1992·Granted Dec 20, 1994·34 cites·20 claims
Showing the top 50 of 142 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →