Inventor · disambiguated record
Zhigang Bai
Also filed as: BAI ZHIGANG
167 granted patents·15 pending applications·5,471 citations·filing 2006–2025
99Inventor score
Files withWESTERN DIGITAL TECH INC47WESTERN DIGITAL FREMONT LLC38BAI ZHIGANG24SANDISK TECHNOLOGIES LLC11FREESCALE SEMICONDUCTOR INC9
Top patents by PatentIndex Score
182 records- 0199US8576517B1Magnetic recording transducer having side shields between the coils and the air-bearing surfaceTRAN UT·Filed 2012·Granted Nov 5, 2013·152 cites·9 claims
- 0299US8547659B1System for providing a transducer having a main coil and an additional coil separated from the main pole by a write shieldBAI ZHIGANG·Filed 2011·Granted Oct 1, 2013·163 cites·22 claims
- 0399US8537495B1Magnetic writer having a split yokeWESTERN DIGITAL FREMONT LLC·Filed 2013·Granted Sep 17, 2013·153 cites·16 claims
- 0499US8488272B1Magnetic recording transducer having side shieldsTRAN UT·Filed 2012·Granted Jul 16, 2013·151 cites·9 claims
- 0599US8373945B1Magnetic writer having a split yokeWESTERN DIGITAL FREMONT LLC·Filed 2007·Granted Feb 12, 2013·150 cites·20 claims
- 0699US8339738B1Method for providing a magnetic recording transducer having a hybrid moment poleTRAN UT·Filed 2012·Granted Dec 25, 2012·149 cites·12 claims
- 0799US8276258B1Method for fabricating a magnetic recording transducerTRAN UT·Filed 2008·Granted Oct 2, 2012·151 cites·15 claims
- 0899US8259410B1Method and system for providing a magnetic head using a composite magnetic material in the recording transducerBAI ZHIGANG·Filed 2008·Granted Sep 4, 2012·156 cites·34 claims
- 0999US8228633B1Method and system for providing a magnetic recording transducer having a hybrid moment poleTRAN UT·Filed 2008·Granted Jul 24, 2012·154 cites·12 claims
- 1099US8179636B1Method and system for providing a perpendicular magnetic recording writerBAI ZHIGANG·Filed 2008·Granted May 15, 2012·162 cites·24 claims
- 1199US8166631B1Method for fabricating a magnetic recording transducer having side shieldsTRAN UT·Filed 2008·Granted May 1, 2012·166 cites·16 claims
- 1299US7688546B1Perpendicular magnetic recording head having nonmagnetic insertion layersWESTERN DIGITAL FREMONT LLC·Filed 2006·Granted Mar 30, 2010·150 cites·27 claims
- 1398US11900971B1Magnetic recording head with assisting electric current in trailing shieldWESTERN DIGITAL TECH INC·Filed 2022·Granted Feb 13, 2024·10 cites·19 claims
- 1498US11881237B1Cross track current design for energy assisted magnetic recordingWESTERN DIGITAL TECH INC·Filed 2021·Granted Jan 23, 2024·9 cites·20 claims
- 1598US11869548B1Magnetic recording devices having external alternating current sourcesWESTERN DIGITAL TECH INC·Filed 2021·Granted Jan 9, 2024·9 cites·24 claims
- 1698US11508401B1Magnetic recording devices having cross-track current flow to facilitate downtrack magnetic field enhancementsWESTERN DIGITAL TECH INC·Filed 2021·Granted Nov 22, 2022·13 cites·21 claims
- 1798US11222656B1Method to reduce baseline shift for a SOT differential readerWESTERN DIGITAL TECH INC·Filed 2020·Granted Jan 11, 2022·24 cites·20 claims
- 1898US11100946B1SOT differential reader and method of making sameWESTERN DIGITAL TECH INC·Filed 2020·Granted Aug 24, 2021·23 cites·21 claims
- 1998US10957348B2Magnetic 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
- 2098US10916284B2Metallic magnetic memory devices for cryogenic operation and methods of operating the sameSANDISK TECHNOLOGIES LLC·Filed 2020·Granted Feb 9, 2021·9 cites·5 claims
- 2198US10862022B2Spin-transfer torque MRAM with magnetically coupled assist layers and methods of operating the sameSANDISK TECHNOLOGIES LLC·Filed 2018·Granted Dec 8, 2020·18 cites·25 claims
- 2298US10811596B2Spin transfer torque MRAM with a spin torque oscillator stack and methods of making the sameSANDISK TECHNOLOGIES LLC·Filed 2018·Granted Oct 20, 2020·20 cites·15 claims
- 2398US10797227B2Spin-transfer torque MRAM with a negative magnetic anisotropy assist layer and methods of operating the sameSANDISK TECHNOLOGIES LLC·Filed 2018·Granted Oct 6, 2020·22 cites·19 claims
- 2498US10726892B2Metallic magnetic memory devices for cryogenic operation and methods of operating the sameSANDISK TECHNOLOGIES LLC·Filed 2018·Granted Jul 28, 2020·32 cites·20 claims
- 2598US8797686B1Magnetic recording transducer with short effective throat height and method of fabricationBAI ZHIGANG·Filed 2010·Granted Aug 5, 2014·148 cites·14 claims
- 2698US8797684B1Magnetic writer configured for high data rate recordingTRAN UT·Filed 2011·Granted Aug 5, 2014·142 cites·18 claims
- 2798US8786983B1Magnetic writer having a low aspect ratio two layer coilLIU FENG·Filed 2012·Granted Jul 22, 2014·144 cites·26 claims
- 2898US8760807B1Method for providing a wraparound shield for a magnetic recording transducer using a damascene processWESTERN DIGITAL FREMONT LLC·Filed 2012·Granted Jun 24, 2014·130 cites·10 claims
- 2998US8724259B1Conformal high moment side shield seed layer for perpendicular magnetic recording writerLIU FENG·Filed 2012·Granted May 13, 2014·168 cites·3 claims
- 3098US8720044B1Method for manufacturing a magnetic recording transducer having side shieldsWESTERN DIGITAL FREMONT LLC·Filed 2013·Granted May 13, 2014·140 cites·16 claims
- 3198US8582238B1Systems and methods for providing perpendicular magnetic writers having gradient magnetic moment side shieldsLIU FENG·Filed 2011·Granted Nov 12, 2013·175 cites·27 claims
- 3298US8520337B1Perpendicular magnetic recording writer pole with leading and trailing bevel side wall angles at air bearing surfaceLIU FENG·Filed 2012·Granted Aug 27, 2013·153 cites·12 claims
- 3398US8520336B1Magnetic recording head with nano scale pole tip bulgeLIU FENG·Filed 2011·Granted Aug 27, 2013·157 cites·22 claims
- 3498US8514517B1Systems and methods for providing hybrid coils for magnetic write headsBATRA SHARAT·Filed 2011·Granted Aug 20, 2013·155 cites·11 claims
- 3597US10861485B1Write heads configured to redirect currentWESTERN DIGITAL TECH INC·Filed 2020·Granted Dec 8, 2020·8 cites·16 claims
- 3697US10839831B1Dual writer designs with SOT and STT assisted recordingWESTERN DIGITAL TECH INC·Filed 2019·Granted Nov 17, 2020·32 cites·23 claims
- 3797US8792208B1Method for providing side shields having non-conformal regions for a magnetic recording transducerLIU FENG·Filed 2012·Granted Jul 29, 2014·151 cites·16 claims
- 3897US8705205B1Magnetic recording head having a dual sidewall angleLI YUNFEI·Filed 2011·Granted Apr 22, 2014·152 cites·17 claims
- 3997US8320076B1Method and system for providing a magnetic recording transducer including an assist pole having surfaces angled with respect to the ABSSHEN YONG·Filed 2008·Granted Nov 27, 2012·156 cites·6 claims
- 4097US8264792B2PMR writer device with multi-level tapered write poleBAI ZHIGANG·Filed 2009·Granted Sep 11, 2012·80 cites·5 claims
- 4197US7755861B1Method and system for providing a magnetic recording mediaWESTERN DIGITAL FREMONT LLC·Filed 2007·Granted Jul 13, 2010·71 cites·21 claims
- 4296US11894026B1Magnetic recording head having leads over the trailing shield for assisting electric currentsWESTERN DIGITAL TECH INC·Filed 2022·Granted Feb 6, 2024·6 cites·23 claims
- 4396US11557314B1Write heads having conducting side gap for directing currentWESTERN DIGITAL TECH INC·Filed 2019·Granted Jan 17, 2023·22 cites·22 claims
- 4496US11212447B1Optical devices for tilt in camera systemsWESTERN DIGITAL TECH INC·Filed 2020·Granted Dec 28, 2021·5 cites·20 claims
- 4596US8693141B1Systems and methods for providing stacked writer leads for magnetic transducersELLIOTT CARL F·Filed 2011·Granted Apr 8, 2014·152 cites·26 claims
- 4696US8670213B1Methods for tunable plating seed step coverageZENG WANXUE·Filed 2012·Granted Mar 11, 2014·154 cites·13 claims
- 4796US8628672B1Process for manufacturing a perpendicular magnetic recording writer pole with nonmagnetic bevelSI WEIMIN·Filed 2012·Granted Jan 14, 2014·151 cites·19 claims
- 4896US8547661B2MAMR head with self-aligned write element and microwave field generatorBAI ZHIGANG·Filed 2009·Granted Oct 1, 2013·31 cites·9 claims
- 4996US8405930B1Method and system for providing a transducer having dual, ABS recessed auxiliary poles on opposite sides of a main pole with non-magnetic spacer adjoining back portion of main pole and positioned between auxiliary polesLI ZHANJIE·Filed 2011·Granted Mar 26, 2013·171 cites·16 claims
- 5096US8125732B2Tapered PMR write pole with straight side wall portionBAI ZHIGANG·Filed 2009·Granted Feb 28, 2012·34 cites·20 claims
Showing the top 50 of 182 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →