Quan-chiu H. Lam

Person

San Jose, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Magnetic recording head with stable magnetization of shields
- Patent number 12,148,454
- Issue date Nov 19, 2024
- Western Digital Technologies, Inc.
- Quan-Chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording head with trailing shield having multiple throat...
- Patent number 11,894,028
- Issue date Feb 6, 2024
- Western Digital Technologies, Inc.
- Quan-Chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Grant
Asymmetric write head shields compatible with dual-free-layer (DFL)...
- Patent number 11,682,417
- Issue date Jun 20, 2023
- Western Digital Technologies, Inc.
- Quan-Chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording head with stable magnetization of shields
- Patent number 11,676,627
- Issue date Jun 13, 2023
- Western Digital Technologies, Inc.
- Quan-Chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording head with trailing shield having multiple throat...
- Patent number 11,657,837
- Issue date May 23, 2023
- Western Digital Technologies, Inc.
- Quan-Chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Grant
Shield with uniform magnetic properties for a perpendicular magneti...
- Patent number 9,412,398
- Issue date Aug 9, 2016
- HGST Netherlands B.V.
- Donald G. Allen
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic write head having a stacked coil architecture for high dat...
- Patent number 9,183,853
- Issue date Nov 10, 2015
- HGST Netherlands B.V.
- Wen-Chien David Hsiao
- G11 - INFORMATION STORAGE
Information Patent Grant
Stiff discrete insert array for thermal PTR management with desired...
- Patent number 9,099,116
- Issue date Aug 4, 2015
- HGST Netherlands, B.V.
- Quan-Chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Grant
Real time writer shields magnetization optimization for FTI improve...
- Patent number 9,099,110
- Issue date Aug 4, 2015
- HGST Netherlands, B.V.
- Venkatesh Chembrolu
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic write head having a residual shield seed layer for reducin...
- Patent number 8,780,499
- Issue date Jul 15, 2014
- HGST Netherlands B.V.
- Wen-Chien D. Hsiao
- 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
Perpendicular write head having a modified wrap-around shield to im...
- Patent number 8,120,874
- Issue date Feb 21, 2012
- Hitachi Global Storage Technologies Netherlands B.V.
- Wen-Chien David Hsiao
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic write head having a novel trailing return po...
- Patent number 8,068,311
- Issue date Nov 29, 2011
- Hitachi Global Storage Technologies Netherlands B.V.
- Wen-Chien David Hsiao
- G11 - INFORMATION STORAGE
Information Patent Grant
Perpendicular magnetic write head with stepped write pole for reduc...
- Patent number 7,990,652
- Issue date Aug 2, 2011
- Hitachi Global Storage Technologies Netherlands B.V.
- Wen-Chien David Hsiao
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for precompensation/write-current latching to improve error...
- Patent number 7,446,966
- Issue date Nov 4, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Indukumar Chenchu Kalahasthi
- G11 - INFORMATION STORAGE
Information Patent Grant
Methods of orienting an easy axis of a high-aspect ratio write head...
- Patent number 7,237,320
- Issue date Jul 3, 2007
- Hitachi Global Storage Technologies Netherlands B.V.
- Quan-chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for providing transverse magnetic bias proximate to a pole t...
- Patent number 7,070,716
- Issue date Jul 4, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Quan-Chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for providing transverse magnetic bias proximate to a pol...
- Patent number 7,072,142
- Issue date Jul 4, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Quan-Chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Grant
Localized pole tip heating device for magnetic head for hard disk d...
- Patent number 7,023,660
- Issue date Apr 4, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Wen-Chien David Hsiao
- G11 - INFORMATION STORAGE
Information Patent Grant
Write head having first pole piece with frequency dependent variabl...
- Patent number 6,826,014
- Issue date Nov 30, 2004
- International Business Machines Corporation
- Quan-chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Grant
First pole piece with frequency dependent variable effective throat...
- Patent number 6,785,098
- Issue date Aug 31, 2004
- International Business Machines Corporation
- Wenchein Hsiao
- G11 - INFORMATION STORAGE
Information Patent Grant
Low frequency attenuator in a magnetic write head
- Patent number 6,721,129
- Issue date Apr 13, 2004
- International Business Machines Corporation
- Quan-chiu Harry Lam
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
MAGNETIC RECORDING HEAD WITH STABLE MAGNETIZATION OF SHIELDS
- Publication number 20230274761
- Publication date Aug 31, 2023
- Western Digital Technologies, Inc.
- Quan-Chiu Harry LAM
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic Recording Head with Trailing Shield Having Multiple Throat...
- Publication number 20230118634
- Publication date Apr 20, 2023
- Western Digital Technologies, Inc.
- Quan-Chiu Harry LAM
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic Recording Head with Stable Magnetization of Shields
- Publication number 20230044051
- Publication date Feb 9, 2023
- Western Digital Technologies, Inc.
- Quan-Chiu Harry LAM
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic Recording Head with Trailing Shield Having Multiple Throat...
- Publication number 20220375495
- Publication date Nov 24, 2022
- Western Digital Technologies, Inc.
- Quan-Chiu Harry LAM
- G11 - INFORMATION STORAGE
Information Patent Application
MANAGING FAR AND NEAR TRACK ERASURE BY DYNAMIC CONTROL OF A WRITE C...
- Publication number 20180012627
- Publication date Jan 11, 2018
- HGST NETHERLANDS B.V.
- Mark Hutcheson Burkhardt
- G11 - INFORMATION STORAGE
Information Patent Application
STIFF DISCRETE INSERT ARRAY FOR THERMAL PTR MANAGEMENT WITH DESIRED...
- Publication number 20150325258
- Publication date Nov 12, 2015
- HGST NETHERLANDS B.V.
- Quan-Chiu Harry LAM
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
STIFF DISCRETE INSERT ARRAY FOR THERMAL PTR MANAGEMENT WITH DESIRED...
- Publication number 20150062753
- Publication date Mar 5, 2015
- HGST NETHERLANDS B.V.
- Quan-Chiu Harry LAM
- G11 - INFORMATION STORAGE
Information Patent Application
SHIELD WITH UNIFORM MAGNETIC PROPERTIES FOR A PERPENDICULAR MAGNETI...
- Publication number 20150056473
- Publication date Feb 26, 2015
- HGST NETHERLANDS B.V.
- Donald G. Allen
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC WRITE HEAD HAVING A STACKED COIL ARCHITECTURE FOR HIGH DAT...
- Publication number 20140313614
- Publication date Oct 23, 2014
- HGST NETHERLANDS B.V.
- Wen-Chien David Hsiao
- G11 - INFORMATION STORAGE
Information Patent Application
MAGNETIC WRITE HEAD HAVING A RESIDUAL SHIELD SEED LAYER FOR REDUCIN...
- Publication number 20140168823
- Publication date Jun 19, 2014
- HGST NETHERLANDS B.V.
- Wen-Chien D. Hsiao
- G11 - INFORMATION STORAGE
Information Patent Application
WRITE HEAD WITH ROTATIONAL WRITE FIELD
- Publication number 20120162821
- Publication date Jun 28, 2012
- HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
- Quan-Chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR MAGNETIC WRITE HEAD HAVING A NOVEL TRAILING RETURN PO...
- Publication number 20090219649
- Publication date Sep 3, 2009
- Wen-Chien David Hsiao
- G11 - INFORMATION STORAGE
Information Patent Application
PERPENDICULAR WRITE HEAD HAVING A MODIFIED WRAP-AROUND SHIELD TO I...
- Publication number 20090168240
- Publication date Jul 2, 2009
- Wen-Chien David Hsiao
- 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
Method for precompensation/write-current latching to improve error...
- Publication number 20060114587
- Publication date Jun 1, 2006
- Indukumar Chenchu Kalahasthi
- 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
Methods of orienting an easy axis of a high-aspect ratio write head...
- Publication number 20050120544
- Publication date Jun 9, 2005
- Quan-Chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Application
Apparatus for providing transverse magnetic bias proximate to a pol...
- Publication number 20050024768
- Publication date Feb 3, 2005
- Hitachi Global Technologies Netherlands B.V.
- Quan-Chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Application
Method for providing transverse magnetic bias proximate to a pole tip
- Publication number 20050024177
- Publication date Feb 3, 2005
- Hitachi Global Technologies Netherlands B.V.
- Quan-Chiu Harry Lam
- G11 - INFORMATION STORAGE
Information Patent Application
Localized pole tip heating device for magnetic head for hard disk d...
- Publication number 20050018347
- Publication date Jan 27, 2005
- Wen-Chien David Hsiao
- G11 - INFORMATION STORAGE
Information Patent Application
First pole piece with frequency dependent variable effective throat...
- Publication number 20030067721
- Publication date Apr 10, 2003
- Wenchein Hsiao
- G11 - INFORMATION STORAGE
Information Patent Application
Write head having first pole piece with frequency dependent variabl...
- Publication number 20030058583
- Publication date Mar 27, 2003
- International Business Machines Corporation
- Quan-Chiu Harry Lam
- G11 - INFORMATION STORAGE

Quan-chiu H. Lam

Person

Patents Grantslast 30 patents

Magnetic recording head with stable magnetization of shields

Magnetic recording head with trailing shield having multiple throat...

Asymmetric write head shields compatible with dual-free-layer (DFL)...

Magnetic recording head with stable magnetization of shields

Magnetic recording head with trailing shield having multiple throat...

Shield with uniform magnetic properties for a perpendicular magneti...

Magnetic write head having a stacked coil architecture for high dat...

Stiff discrete insert array for thermal PTR management with desired...

Real time writer shields magnetization optimization for FTI improve...

Magnetic write head having a residual shield seed layer for reducin...

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

Perpendicular write head having a modified wrap-around shield to im...

Perpendicular magnetic write head having a novel trailing return po...

Perpendicular magnetic write head with stepped write pole for reduc...

Method for precompensation/write-current latching to improve error...

Methods of orienting an easy axis of a high-aspect ratio write head...

Method for providing transverse magnetic bias proximate to a pole t...

Apparatus for providing transverse magnetic bias proximate to a pol...

Localized pole tip heating device for magnetic head for hard disk d...

Write head having first pole piece with frequency dependent variabl...

First pole piece with frequency dependent variable effective throat...

Low frequency attenuator in a magnetic write head

Patents Applicationslast 30 patents

MAGNETIC RECORDING HEAD WITH STABLE MAGNETIZATION OF SHIELDS

Magnetic Recording Head with Trailing Shield Having Multiple Throat...

Magnetic Recording Head with Stable Magnetization of Shields

Magnetic Recording Head with Trailing Shield Having Multiple Throat...

MANAGING FAR AND NEAR TRACK ERASURE BY DYNAMIC CONTROL OF A WRITE C...

STIFF DISCRETE INSERT ARRAY FOR THERMAL PTR MANAGEMENT WITH DESIRED...

STIFF DISCRETE INSERT ARRAY FOR THERMAL PTR MANAGEMENT WITH DESIRED...

SHIELD WITH UNIFORM MAGNETIC PROPERTIES FOR A PERPENDICULAR MAGNETI...

MAGNETIC WRITE HEAD HAVING A STACKED COIL ARCHITECTURE FOR HIGH DAT...

MAGNETIC WRITE HEAD HAVING A RESIDUAL SHIELD SEED LAYER FOR REDUCIN...

WRITE HEAD WITH ROTATIONAL WRITE FIELD

PERPENDICULAR MAGNETIC WRITE HEAD HAVING A NOVEL TRAILING RETURN PO...

PERPENDICULAR WRITE HEAD HAVING A MODIFIED WRAP-AROUND SHIELD TO I...

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

Method for precompensation/write-current latching to improve error...

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

Methods of orienting an easy axis of a high-aspect ratio write head...

Apparatus for providing transverse magnetic bias proximate to a pol...

Method for providing transverse magnetic bias proximate to a pole tip

Localized pole tip heating device for magnetic head for hard disk d...

First pole piece with frequency dependent variable effective throat...

Write head having first pole piece with frequency dependent variabl...