Inventor · disambiguated record
Yingjian Chen
Also filed as: CHEN YINGJIAN
79 granted patents·1 pending application·10,495 citations·filing 1997–2021
99Inventor score
Files withWESTERN DIGITAL FREMONT INC21WESTERN DIGITAL FREMONT LLC19CHEN YINGJIAN9READ RITE CORP8WESTERN DIGITAL TECH INC4
Top patents by PatentIndex Score
80 records- 0199US8797680B1Perpendicular magnetic recording head having reduced shield notchingLUO GUANGHONG·Filed 2012·Granted Aug 5, 2014·134 cites·4 claims
- 0299US8689430B1Method for providing a perpendicular magnetic recording (PMR)headCHEN YINGJIAN·Filed 2006·Granted Apr 8, 2014·155 cites·12 claims
- 0399US8146236B1Method for providing a perpendicular magnetic recording (PMR) transducerLUO GUANGHONG·Filed 2008·Granted Apr 3, 2012·155 cites·20 claims
- 0499US7819979B1Method and system for cleaning magnetic artifacts using a carbonyl reactive ion etchWESTERN DIGITAL FREMONT LLC·Filed 2005·Granted Oct 26, 2010·154 cites·30 claims
- 0599US7691434B1Method for fabricating magnetoresistive read head having a bias structure with at least one dusting layerWESTERN DIGITAL FREMONT LLC·Filed 2008·Granted Apr 6, 2010·149 cites·16 claims
- 0699US7493688B1Method of manufacturing a magnetic recording transducerWESTERN DIGITAL FREMONT LLC·Filed 2006·Granted Feb 24, 2009·147 cites·5 claims
- 0799US7375926B1Inductive writer design using a soft magnetic pedestal having a high magnetic saturation layerWESTERN DIGITAL FREMONT LLC·Filed 2007·Granted May 20, 2008·151 cites·16 claims
- 0899US7342752B1Magnetoresistive read head having a bias structure with at least one dusting layerWESTERN DIGITAL FREMONT LLC·Filed 2004·Granted Mar 11, 2008·155 cites·36 claims
- 0999US7310204B1Inductive writer design for using a soft magnetic pedestal having a high magnetic saturation layerWESTERN DIGITAL FREMONT LLC·Filed 2003·Granted Dec 18, 2007·171 cites·16 claims
- 1099US7007372B1Method for making high speed, high areal density inductive write structureWESTERN DIGITAL FREMONT INC·Filed 2003·Granted Mar 7, 2006·153 cites·20 claims
- 1199US6934113B1Method and system for providing dynamic actuation of a write head using a strain elementWESTERN DIGITAL FREMONT INC·Filed 2004·Granted Aug 23, 2005·158 cites·23 claims
- 1299US6912106B1Writer with a hot seed zero throat and substantially flat top poleWESTERN DIGITAL FREMONT INC·Filed 2002·Granted Jun 28, 2005·182 cites·24 claims
- 1399US6809899B1Magnetic heads for perpendicular recording with trapezoidal pole tipsWESTERN DIGITAL FREMONT INC·Filed 2003·Granted Oct 26, 2004·266 cites·25 claims
- 1499US6724569B1Thin film writer with multiplayer write gapWESTERN DIGITAL FREMONT INC·Filed 2002·Granted Apr 20, 2004·161 cites·38 claims
- 1598US8424192B1Method for manufacturing a pole for a magnetic recording headYANG DANNING·Filed 2005·Granted Apr 23, 2013·147 cites·14 claims
- 1698US8231796B1Method and system for providing a magnetic recording transducer having side shieldsLI YUN-FEI·Filed 2008·Granted Jul 31, 2012·166 cites·17 claims
- 1798US8149536B1Perpendicular magnetic recording head having a pole tip formed with a CMP uniformity structureYANG DANNING·Filed 2007·Granted Apr 3, 2012·153 cites·9 claims
- 1898US8081403B1Magnetic element having a smaller critical dimension of the free layerCHEN BENJAMIN·Filed 2008·Granted Dec 20, 2011·149 cites·11 claims
- 1998US8079135B1Method for providing a perpendicular magnetic recording (PMR) transducerSHEN YONG·Filed 2007·Granted Dec 20, 2011·152 cites·15 claims
- 2098US8077434B1Perpendicular magnetic recording head having a recessed magnetic base layerSHEN YONG·Filed 2007·Granted Dec 13, 2011·155 cites·16 claims
- 2198US8018677B1Magnetic recording head formed by damascene processWESTERN DIGITAL FREMONT LLC·Filed 2007·Granted Sep 13, 2011·162 cites·11 claims
- 2298US7968219B1Magnetically soft, high saturation magnetization laminate of iron-cobalt-nitrogen and iron-nickel for perpendicular media underlayersWESTERN DIGITAL FREMONT LLC·Filed 2008·Granted Jun 28, 2011·151 cites·6 claims
- 2398US7672080B1Laminated perpendicular writer head including amorphous metalWESTERN DIGITAL FREMONT LLC·Filed 2006·Granted Mar 2, 2010·156 cites·20 claims
- 2498US7639457B1Magnetic sensor with underlayers promoting high-coercivity, in-plane bias layersWESTERN DIGITAL FREMONT LLC·Filed 2004·Granted Dec 29, 2009·161 cites·48 claims
- 2598US7554767B1Electrical lapping guide disposed laterally relative to a shield pedestalWESTERN DIGITAL FREMONT LLC·Filed 2005·Granted Jun 30, 2009·167 cites·10 claims
- 2698US7444740B1Damascene process for fabricating poles in recording headsWESTERN DIGITAL FREMONT LLC·Filed 2005·Granted Nov 4, 2008·198 cites·2 claims
- 2798US7419891B1Method and system for providing a smaller critical dimension magnetic element utilizing a single layer maskWESTERN DIGITAL FREMONT LLC·Filed 2006·Granted Sep 2, 2008·161 cites·16 claims
- 2898US7354664B1Magnetically soft, high saturation magnetization laminate of iron-cobalt-nitrogen and iron-nickel for perpendicular media underlayersWESTERN DIGITAL FREMONT LLC·Filed 2004·Granted Apr 8, 2008·162 cites·27 claims
- 2998US7296339B1Method for manufacturing a perpendicular magnetic recording headWESTERN DIGITAL FREMONT LLC·Filed 2004·Granted Nov 20, 2007·168 cites·11 claims
- 3098US7289303B1Spin valve sensors having synthetic antiferromagnet for longitudinal biasWESTERN DIGITAL FREMONT LLC·Filed 2001·Granted Oct 30, 2007·151 cites·13 claims
- 3198US7286329B1GMR sensor with shallow contiguous junction and bias layers aligned with free sensor layersWESTERN DIGITAL FREMONT LLC·Filed 2004·Granted Oct 23, 2007·150 cites·38 claims
- 3298US7177117B1Magnetically soft, high saturation magnetization laminates of iron-cobalt-nitrogen and iron-nickel for magnetic head pole layersWESTERN DIGITAL FREMONT INC·Filed 2004·Granted Feb 13, 2007·171 cites·45 claims
- 3398US7113366B1Double-nosed inductive transducer with reduced off-track writingWESTERN DIGITAL FREMONT INC·Filed 2002·Granted Sep 26, 2006·156 cites·6 claims
- 3498US7027274B1Spin-dependent tunneling read/write sensor for hard disk drivesWESTERN DIGITAL FREMONT INC·Filed 2001·Granted Apr 11, 2006·153 cites·18 claims
- 3598US6958885B1Insulation layer structure for inductive write heads and method of fabricationWESTERN DIGITAL FREMONT INC·Filed 2000·Granted Oct 25, 2005·150 cites·11 claims
- 3698US6943993B2Magnetic recording head with a side shield structure for controlling side reading of thin film read sensorWESTERN DIGITAL FREMONT INC·Filed 2003·Granted Sep 13, 2005·189 cites·21 claims
- 3798US6906894B2Write head having a recessed, magnetic adjunct pole formed atop a main pole, and method of making the sameWESTERN DIGITAL FREMONT INC·Filed 2004·Granted Jun 14, 2005·166 cites·19 claims
- 3898US6873494B2Write head with high moment film layer having tapered portion extending beyond write gap layerWESTERN DIGITAL FREMONT INC·Filed 2002·Granted Mar 29, 2005·148 cites·19 claims
- 3998US6870712B2Inductive writer with flat top pole and pedestal defined zero throatWESTERN DIGITAL FREMONT INC·Filed 2001·Granted Mar 22, 2005·171 cites·6 claims
- 4098US6791793B1Perpendicular recording write head having a recessed magnetic adjunct pole and method of making the sameWESTERN DIGITAL FREMONT INC·Filed 2001·Granted Sep 14, 2004·193 cites·20 claims
- 4198US6785955B1Method for providing pedestal-defined zero throat writerWESTERN DIGITAL FREMONT INC·Filed 2001·Granted Sep 7, 2004·151 cites·6 claims
- 4298US6778358B1Magnetically soft, high saturation magnetization laminates of iron-cobalt-nitrogen and iron-nickelWESTERN DIGITAL FREMONT INC·Filed 2002·Granted Aug 17, 2004·217 cites·20 claims
- 4398US6737281B1Method of making transducer with inorganic nonferromagnetic apex regionWESTERN DIGITAL FREMONT INC·Filed 2002·Granted May 18, 2004·179 cites·20 claims
- 4498US6724572B1Inductive transducer with recessed leading pole layerWESTERN DIGITAL INC·Filed 2002·Granted Apr 20, 2004·209 cites·24 claims
- 4598US6721138B1Inductive transducer with stitched pole tip and pedestal defining zero throat heightWESTERN DIGITAL FREMONT INC·Filed 2001·Granted Apr 13, 2004·187 cites·18 claims
- 4698US6700738B1Read/write head coil tap having upper and lower portionsFiled 2001·Granted Mar 2, 2004·154 cites·10 claims
- 4798US6618223B1High speed, high areal density inductive writerREAD RITE CORP·Filed 2000·Granted Sep 9, 2003·163 cites·18 claims
- 4897US8455119B1Disk having an underlayer that includes a plurality of nonmagnetic layers interleaved with magnetic layersJIANG HAI·Filed 2011·Granted Jun 4, 2013·148 cites·8 claims
- 4997US8333008B1Method for manufacturing a perpendicular magnetic recording transducerSIN KYUSIK·Filed 2005·Granted Dec 18, 2012·152 cites·26 claims
- 5097US6940688B2Coil inductive writer having a low inductance and short yoke lengthWESTERN DIGITAL FREMONT INC·Filed 2002·Granted Sep 6, 2005·153 cites·16 claims
Showing the top 50 of 80 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →