Francis H. Liu

Person

Fremont, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic writer having a split yoke
- Patent number 8,537,495
- Issue date Sep 17, 2013
- Western Digital (Fremont), LLC
- Peng Luo
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive comprising a dual read element and delay circuitry to im...
- Patent number 8,514,506
- Issue date Aug 20, 2013
- Western Digital (Fremont), LLC
- Shaoping Li
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and system for performing EAMR recording at high density usi...
- Patent number 8,385,157
- Issue date Feb 26, 2013
- Western Digital Technologies, Inc.
- Eric J. Champion
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic writer having a split yoke
- Patent number 8,373,945
- Issue date Feb 12, 2013
- Western Digital (Fremont), LLC
- Peng Luo
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive comprising a dual read element and delay circuitry to im...
- Patent number 8,139,301
- Issue date Mar 20, 2012
- Western Digital (Fremont), LLC
- Shaoping Li
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic recording head having nonmagnetic insertion...
- Patent number 7,688,546
- Issue date Mar 30, 2010
- Western Digital (Fremont), LLC
- Zhigang Bai
- G11 - INFORMATION STORAGE
Information Patent Grant
Read/write head with dynamic flying height control by magnetostriction
- Patent number 7,660,080
- Issue date Feb 9, 2010
- Western Digital (Fremont), LLC
- Francis H. Liu
- G11 - INFORMATION STORAGE
Information Patent Grant
Write element with recessed pole and heat sink layer for ultra-high...
- Patent number 7,522,379
- Issue date Apr 21, 2009
- Western Digital (Fremont), LLC
- Mohamad T. Krounbi
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and system for providing perpendicular magnetic recording tr...
- Patent number 7,508,627
- Issue date Mar 24, 2009
- Western Digital (Fremont), LLC
- Lei Larry Zhang
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with stitched top pole layer and single layer coil or...
- Patent number 7,443,632
- Issue date Oct 28, 2008
- Western Digital (Fremont), LLC
- Kroum S. Stoev
- G11 - INFORMATION STORAGE
Information Patent Grant
Inductive writer design using a soft magnetic pedestal having a hig...
- Patent number 7,375,926
- Issue date May 20, 2008
- Western Digital (Fremont), LLC
- Kroum S. Stoev
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for manufacturing a shielded pole magnetic head for perpendi...
- Patent number 7,337,530
- Issue date Mar 4, 2008
- Western Digital (Fremont), LLC
- Kroum S. Stoev
- G11 - INFORMATION STORAGE
Information Patent Grant
Inductive writer design for using a soft magnetic pedestal having a...
- Patent number 7,310,204
- Issue date Dec 18, 2007
- Western Digital (Fremont), LLC
- Kroum S. Stoev
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with thin trailing pedestal layer
- Patent number 7,292,409
- Issue date Nov 6, 2007
- Western Digital (Fremont), LLC
- Kroum S. Stoev
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic write head having resistive heater coil
- Patent number 7,283,327
- Issue date Oct 16, 2007
- Western Digital (Fremont), LLC
- Francis H. Liu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head with stitched top pole layer and single layer coil or...
- Patent number 7,248,433
- Issue date Jul 24, 2007
- Western Digital (Fremont), Inc.
- Kroum S. Stoev
- G11 - INFORMATION STORAGE
Information Patent Grant
Write element for perpendicular recording in a data storage system
- Patent number 7,239,478
- Issue date Jul 3, 2007
- Western Digital (Fremont), Inc.
- Kyusik Sin
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic read head with recessed hard bias and current leads
- Patent number 7,212,384
- Issue date May 1, 2007
- Western Digital (Fremont), Inc.
- Kroum S. Stoev
- G11 - INFORMATION STORAGE
Information Patent Grant
Shielded pole magnetic head for perpendicular recording
- Patent number 7,193,815
- Issue date Mar 20, 2007
- Western Digital (Fremont), Inc.
- Kroum S. Stoev
- G11 - INFORMATION STORAGE
Information Patent Grant
Trailing edge recording magnetic head with reversed double bias coi...
- Patent number 7,126,788
- Issue date Oct 24, 2006
- Western Digital (Fremont), Inc.
- Francis H. Liu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head for perpendicular recording with magnetic loop provid...
- Patent number 7,126,790
- Issue date Oct 24, 2006
- Western Digital (Fremont), Inc.
- Francis H. Liu
- G11 - INFORMATION STORAGE
Information Patent Grant
Double-nosed inductive transducer with reduced off-track writing
- Patent number 7,113,366
- Issue date Sep 26, 2006
- Western Digital (Fremont), Inc.
- Yugang Wang
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of using a magnetic write head having an internal heater
- Patent number 7,092,195
- Issue date Aug 15, 2006
- Western Digital (Fremont), Inc.
- Francis H. Liu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetoresistive sensor with overlapping leads having distributed c...
- Patent number 6,989,972
- Issue date Jan 24, 2006
- Western Digital (Fremont), Inc.
- Kroum Stoev
- G11 - INFORMATION STORAGE
Information Patent Grant
Writer with a hot seed zero throat and substantially flat top pole
- Patent number 6,912,106
- Issue date Jun 28, 2005
- Western Digital (Fremont), Inc.
- Yingjian Chen
- G11 - INFORMATION STORAGE
Information Patent Grant
Write head having a recessed, magnetic adjunct pole formed atop a m...
- Patent number 6,906,894
- Issue date Jun 14, 2005
- Western Digital (Fremont), Inc.
- Yingjian Chen
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic heads for perpendicular recording with trapezoidal pole tips
- Patent number 6,809,899
- Issue date Oct 26, 2004
- Western Digital (Fremont), Inc.
- Yingjian Chen
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular recording write head having a recessed magnetic adjun...
- Patent number 6,791,793
- Issue date Sep 14, 2004
- Western Digital (Fremont), Inc.
- Yingjian Chen
- G11 - INFORMATION STORAGE
Information Patent Grant
Inductive transducer with recessed leading pole layer
- Patent number 6,724,572
- Issue date Apr 20, 2004
- Western Digital, Inc.
- Kroum Stoev
- G11 - INFORMATION STORAGE
Information Patent Grant
Inductive transducer with stitched pole tip and pedestal defining z...
- Patent number 6,721,138
- Issue date Apr 13, 2004
- Western Digital (Fremont), Inc.
- Yingjian Chen
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
Write head having a recessed, magnetic adjunct pole formed atop a m...
- Publication number 20050007696
- Publication date Jan 13, 2005
- Western Digital (Fremont), Inc.
- Yingjian Chen
- G11 - INFORMATION STORAGE

Francis H. Liu

Person

Patents Grantslast 30 patents

Magnetic writer having a split yoke

Disk drive comprising a dual read element and delay circuitry to im...

Method and system for performing EAMR recording at high density usi...

Magnetic writer having a split yoke

Disk drive comprising a dual read element and delay circuitry to im...

Perpendicular magnetic recording head having nonmagnetic insertion...

Read/write head with dynamic flying height control by magnetostriction

Write element with recessed pole and heat sink layer for ultra-high...

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

Magnetic head with stitched top pole layer and single layer coil or...

Inductive writer design using a soft magnetic pedestal having a hig...

Method for manufacturing a shielded pole magnetic head for perpendi...

Inductive writer design for using a soft magnetic pedestal having a...

Magnetic head with thin trailing pedestal layer

Magnetic write head having resistive heater coil

Magnetic head with stitched top pole layer and single layer coil or...

Write element for perpendicular recording in a data storage system

Magnetic read head with recessed hard bias and current leads

Shielded pole magnetic head for perpendicular recording

Trailing edge recording magnetic head with reversed double bias coi...

Magnetic head for perpendicular recording with magnetic loop provid...

Double-nosed inductive transducer with reduced off-track writing

Method of using a magnetic write head having an internal heater

Magnetoresistive sensor with overlapping leads having distributed c...

Writer with a hot seed zero throat and substantially flat top pole

Write head having a recessed, magnetic adjunct pole formed atop a m...

Magnetic heads for perpendicular recording with trapezoidal pole tips

Perpendicular recording write head having a recessed magnetic adjun...

Inductive transducer with recessed leading pole layer

Inductive transducer with stitched pole tip and pedestal defining z...

Patents Applicationslast 30 patents

Write head having a recessed, magnetic adjunct pole formed atop a m...