Changqing Shi

Person

San Ramon, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic head with assisted magnetic recording comprising an electr...
- Patent number 11,657,835
- Issue date May 23, 2023
- Western Digital Technologies, Inc.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with assisted magnetic recording
- Patent number 11,615,806
- Issue date Mar 28, 2023
- Western Digital Technologies, Inc.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Grant
Write heads having conducting side gap for directing current
- Patent number 11,557,314
- Issue date Jan 17, 2023
- Western Digital Technologies, Inc.
- Muhammad Asif Bashir
- G11 - INFORMATION STORAGE
Information Patent Grant
Energy assisted magnetic recording head having improved areal densi...
- Patent number 11,557,315
- Issue date Jan 17, 2023
- Western Digital Technologies, Inc.
- Suping Song
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with assisted magnetic recording
- Patent number 11,373,675
- Issue date Jun 28, 2022
- Western Digital Technologies, Inc.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Grant
Area density capacity improvement with negative anisotropic magneti...
- Patent number 11,264,052
- Issue date Mar 1, 2022
- Western Digital Technologies, Inc.
- Suping Song
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Energy assisted magnetic recording head having improved areal densi...
- Patent number 11,227,627
- Issue date Jan 18, 2022
- Western Digital Technologies, Inc.
- Suping Song
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording head soft error rate improvement with compact ma...
- Patent number 11,087,783
- Issue date Aug 10, 2021
- Western Digital Technologies, Inc.
- Suping Song
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with assisted magnetic recording and method of making...
- Patent number 11,017,801
- Issue date May 25, 2021
- Western Digital Technologies, Inc.
- Venkatesh Chembrolu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with assisted magnetic recording and method of making...
- Patent number 11,017,802
- Issue date May 25, 2021
- Western Digital Technologies, Inc.
- Venkatesh Chembrolu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording write head with selected write gap current direc...
- Patent number 10,957,348
- Issue date Mar 23, 2021
- Western Digital Technologies, Inc.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with current assisted magnetic recording and method o...
- Patent number 10,896,690
- Issue date Jan 19, 2021
- SanDisk Technologies LLC
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with current assisted magnetic recording and method o...
- Patent number 10,891,974
- Issue date Jan 12, 2021
- SanDisk Technologies LLC
- Venkatesh Chembrolu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with assisted magnetic recording and method of making...
- Patent number 10,891,975
- Issue date Jan 12, 2021
- SanDiskTechnologies LLC.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Grant
Write heads configured to redirect current
- Patent number 10,861,485
- Issue date Dec 8, 2020
- Western Digital Technologies, Inc.
- Muhammad Asif Bashir
- G11 - INFORMATION STORAGE
Information Patent Grant
Write heads configured to redirect current
- Patent number 10,777,219
- Issue date Sep 15, 2020
- Western Digital Technologies, Inc.
- Muhammad Asif Bashir
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording write head with selected write gap current direc...
- Patent number 10,699,734
- Issue date Jun 30, 2020
- Western Digital Technologies, Inc.
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Grant
System for adjusting lapping of a transducer using a disk windage
- Patent number 9,087,537
- Issue date Jul 21, 2015
- Western Digital (Fremont), LLC
- Steven C. Rudy
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of forming a straight top main pole for PMR bevel writer
- Patent number 8,893,376
- Issue date Nov 25, 2014
- Western Digital(Fremont), LLC
- Changqing Shi
- G11 - INFORMATION STORAGE
Information Patent Grant
Self-aligned coil process in magnetic recording heads
- Patent number 8,826,515
- Issue date Sep 9, 2014
- HGST Netherlands B.V.
- Terence Tin-Lok Lam
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and system for adjusting lapping of a transducer using a dis...
- Patent number 8,758,083
- Issue date Jun 24, 2014
- Western Digital (Fremont), LLC
- Steven C. Rudy
- G11 - INFORMATION STORAGE
Information Patent Grant
System for calibrating an electronic lapping guide for a beveled po...
- Patent number 8,717,709
- Issue date May 6, 2014
- Western Digital (Fremont), LLC
- Changqing Shi
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for utilizing an electronic lapping guide for a beveled pole...
- Patent number 8,443,510
- Issue date May 21, 2013
- Western Digital (Fremont), LLC
- Changqing Shi
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and system for providing a perpendicular magnetic recording...
- Patent number 8,444,866
- Issue date May 21, 2013
- Westen Digital (Fremont), LLC
- Lijie Guan
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and system for providing a wrap-around shield using a patter...
- Patent number 8,409,453
- Issue date Apr 2, 2013
- Western Digital (Fremont), LLC
- Ming Jiang
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for providing a write head with an improved po...
- Patent number 8,331,058
- Issue date Dec 11, 2012
- Hitachi Global Storage Technologies Netherlands B.V.
- Savas Gider
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and system for calibrating an electronic lapping guide for a...
- Patent number 8,291,743
- Issue date Oct 23, 2012
- Western Digital (Fremont), LLC
- Changqing Shi
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for making coplanar write head pole tips
- Patent number 8,276,257
- Issue date Oct 2, 2012
- Hitachi Global Storage Technologies Netherlands B.V.
- Terence Tin-Lok Lam
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and system for providing a perpendicular magnetic recording...
- Patent number 8,262,919
- Issue date Sep 11, 2012
- Western Digital (Fremont), LLC
- Guanghong Luo
- G11 - INFORMATION STORAGE
Information Patent Grant
Double rie damascene process for nose length control
- Patent number 8,257,597
- Issue date Sep 4, 2012
- Western Digital (Fremont), LLC
- Lijie Guan
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
MAGNETIC HEAD WITH ASSISTED MAGNETIC RECORDING AND METHOD OF MAKING...
- Publication number 20220238135
- Publication date Jul 28, 2022
- Western Digital Technologies, Inc.
- Zhigang BAI
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC HEAD WITH ASSISTED MAGNETIC RECORDING AND METHOD OF MAKING...
- Publication number 20220208220
- Publication date Jun 30, 2022
- Western Digital Technologies, Inc.
- Zhigang BAI
- G11 - INFORMATION STORAGE
Information Patent Application
Energy Assisted Magnetic Recording Head Having Improved Areal Densi...
- Publication number 20220108715
- Publication date Apr 7, 2022
- Western Digital Technologies, Inc.
- Suping SONG
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC HEAD WITH ASSISTED MAGNETIC RECORDING AND METHOD OF MAKING...
- Publication number 20210125631
- Publication date Apr 29, 2021
- Western Digital Technologies, Inc.
- Zhigang BAI
- G11 - INFORMATION STORAGE
Information Patent Application
WRITE HEADS CONFIGURED TO REDIRECT CURRENT
- Publication number 20200381011
- Publication date Dec 3, 2020
- Western Digital Technologies, Inc.
- Muhammad ASIF BASHIR
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC HEAD WITH ASSISTED MAGNETIC RECORDING AND METHOD OF MAKING...
- Publication number 20200381012
- Publication date Dec 3, 2020
- SANDISK TECHNOLOGIES LLC
- Venkatesh CHEMBROLU
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC RECORDING WRITE HEAD WITH SELECTED WRITE GAP CURRENT DIREC...
- Publication number 20200327900
- Publication date Oct 15, 2020
- Western Digital Technologies, Inc.
- Zhigang BAI
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC RECORDING WRITE HEAD WITH SELECTED WRITE GAP CURRENT DIREC...
- Publication number 20190267029
- Publication date Aug 29, 2019
- Western Digital Technologies, Inc.
- Zhigang BAI
- G11 - INFORMATION STORAGE
Information Patent Application
SELF-ALIGNED COIL PROCESS IN MAGNETIC RECORDING HEADS
- Publication number 20100187199
- Publication date Jul 29, 2010
- Hitachi Global Storage Technologies Netherlands B.V.
- Terence Tin-Lok Lam
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head for perpendicular recording having stepped wrap aroun...
- Publication number 20090168236
- Publication date Jul 2, 2009
- Ming Jiang
- G11 - INFORMATION STORAGE
Information Patent Application
Perpendicular magnetic recording writer main pole having imbedded n...
- Publication number 20090168237
- Publication date Jul 2, 2009
- Wen-Chien David Hsiao
- G11 - INFORMATION STORAGE
Information Patent Application
METHOD FOR MANUFACTURING A PERPENDICULAR MAGNETIC WRITE HEAD WITH A...
- Publication number 20090154026
- Publication date Jun 18, 2009
- Ming Jiang
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH MAGNETIC SHIELDS S...
- Publication number 20090147410
- Publication date Jun 11, 2009
- HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
- Ming Jiang
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC WRITE HEAD WITH STEPPED WRITE POLE FOR REDUC...
- Publication number 20090141397
- Publication date Jun 4, 2009
- Wen-Chien David Hsiao
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC WRITE HEAD WITH STITCHED NOTCHED TRAILING SH...
- Publication number 20090128953
- Publication date May 21, 2009
- Ming Jiang
- G11 - INFORMATION STORAGE
Information Patent Application
METHOD FOR MANUFACTURING A PERPENDICULAR MAGNETIC WRITE HEAD WITH W...
- Publication number 20090128964
- Publication date May 21, 2009
- Hung-Chin Guthrie
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH FLUX SHAPING LAYER...
- Publication number 20090122445
- Publication date May 14, 2009
- HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
- Ming Jiang
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING HEAD HAVING A SHORT THROAT HEIGHT...
- Publication number 20090103211
- Publication date Apr 23, 2009
- Tsung Yuan Chen
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH TRAILING SHIELD HA...
- Publication number 20080278855
- Publication date Nov 13, 2008
- HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
- Hung-Chin Guthrie
- G11 - INFORMATION STORAGE
Information Patent Application
Write head with self-cross biased pole for high speed magnetic reco...
- Publication number 20080112078
- Publication date May 15, 2008
- HITACHI GLOBAL STORAGE TECHNOLOGIES
- Wen-Chien David Hsiao
- G11 - INFORMATION STORAGE
Information Patent Application
Self-aligned coil process in magnetic recording heads
- Publication number 20060034012
- Publication date Feb 16, 2006
- Terence Tin-Lok Lam
- G11 - INFORMATION STORAGE
Information Patent Application
Method and apparatus for providing a write head having well-defined...
- Publication number 20060023353
- Publication date Feb 2, 2006
- Hitachi Global Technologies Netherlands B.V.
- Terence Tin-Lok Lam
- G11 - INFORMATION STORAGE
Information Patent Application
Method and apparatus for providing a write head with an improved po...
- Publication number 20050264930
- Publication date Dec 1, 2005
- Savas Gider
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic recording media with orthogonal anisotropy enhancement or...
- Publication number 20050266275
- Publication date Dec 1, 2005
- Vladimir R. Nikitin
- G11 - INFORMATION STORAGE
Information Patent Application
Adaptive domain stabilization for magnetic recording read sensors
- Publication number 20050195535
- Publication date Sep 8, 2005
- HITACHI GLOBAL STORAGE TECHNOLOGIES
- Changqing Shi
- G01 - MEASURING TESTING

Changqing Shi

Person

Patents Grantslast 30 patents

Magnetic head with assisted magnetic recording comprising an electr...

Magnetic head with assisted magnetic recording

Write heads having conducting side gap for directing current

Energy assisted magnetic recording head having improved areal densi...

Magnetic head with assisted magnetic recording

Area density capacity improvement with negative anisotropic magneti...

Energy assisted magnetic recording head having improved areal densi...

Magnetic recording head soft error rate improvement with compact ma...

Magnetic head with assisted magnetic recording and method of making...

Magnetic head with assisted magnetic recording and method of making...

Magnetic recording write head with selected write gap current direc...

Magnetic head with current assisted magnetic recording and method o...

Magnetic head with current assisted magnetic recording and method o...

Magnetic head with assisted magnetic recording and method of making...

Write heads configured to redirect current

Write heads configured to redirect current

Magnetic recording write head with selected write gap current direc...

System for adjusting lapping of a transducer using a disk windage

Method of forming a straight top main pole for PMR bevel writer

Self-aligned coil process in magnetic recording heads

Method and system for adjusting lapping of a transducer using a dis...

System for calibrating an electronic lapping guide for a beveled po...

Method for utilizing an electronic lapping guide for a beveled pole...

Method and system for providing a perpendicular magnetic recording...

Method and system for providing a wrap-around shield using a patter...

Method and apparatus for providing a write head with an improved po...

Method and system for calibrating an electronic lapping guide for a...

Method for making coplanar write head pole tips

Method and system for providing a perpendicular magnetic recording...

Double rie damascene process for nose length control

Patents Applicationslast 30 patents

MAGNETIC HEAD WITH ASSISTED MAGNETIC RECORDING AND METHOD OF MAKING...

MAGNETIC HEAD WITH ASSISTED MAGNETIC RECORDING AND METHOD OF MAKING...

Energy Assisted Magnetic Recording Head Having Improved Areal Densi...

MAGNETIC HEAD WITH ASSISTED MAGNETIC RECORDING AND METHOD OF MAKING...

WRITE HEADS CONFIGURED TO REDIRECT CURRENT

MAGNETIC HEAD WITH ASSISTED MAGNETIC RECORDING AND METHOD OF MAKING...

MAGNETIC RECORDING WRITE HEAD WITH SELECTED WRITE GAP CURRENT DIREC...

MAGNETIC RECORDING WRITE HEAD WITH SELECTED WRITE GAP CURRENT DIREC...

SELF-ALIGNED COIL PROCESS IN MAGNETIC RECORDING HEADS

Magnetic head for perpendicular recording having stepped wrap aroun...

Perpendicular magnetic recording writer main pole having imbedded n...

METHOD FOR MANUFACTURING A PERPENDICULAR MAGNETIC WRITE HEAD WITH A...

PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH MAGNETIC SHIELDS S...

PERPENDICULAR MAGNETIC WRITE HEAD WITH STEPPED WRITE POLE FOR REDUC...

PERPENDICULAR MAGNETIC WRITE HEAD WITH STITCHED NOTCHED TRAILING SH...

METHOD FOR MANUFACTURING A PERPENDICULAR MAGNETIC WRITE HEAD WITH W...

PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH FLUX SHAPING LAYER...

PERPENDICULAR MAGNETIC RECORDING HEAD HAVING A SHORT THROAT HEIGHT...

PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH TRAILING SHIELD HA...

Write head with self-cross biased pole for high speed magnetic reco...

Self-aligned coil process in magnetic recording heads

Method and apparatus for providing a write head having well-defined...

Method and apparatus for providing a write head with an improved po...

Magnetic recording media with orthogonal anisotropy enhancement or...

Adaptive domain stabilization for magnetic recording read sensors