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Donald Giles Allen
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Morgan Hill, CA, US
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Patents Grants
last 30 patents
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 manufactured by an enhanced damascene process p...
Patent number
8,547,660
Issue date
Oct 1, 2013
HGST Netherlands B.V.
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic head with flared write pole having multiple tapered regions
Patent number
8,498,078
Issue date
Jul 30, 2013
HGST Netherlands B.V.
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Grant
Magnetic write head fabrication with integrated electrical lapping...
Patent number
8,453,317
Issue date
Jun 4, 2013
HGST Netherlands, B.V.
Donald Allen
G11 - INFORMATION STORAGE
Information
Patent Grant
Write head with different upper and lower yoke lengths and methods...
Patent number
8,218,263
Issue date
Jul 10, 2012
Hitachi Global Storage Technologies Netherlands B.V.
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for manufacturing a magnetic write head having a wrap around...
Patent number
8,201,320
Issue date
Jun 19, 2012
Hitachi Global Storage Technologies Netherlands B.V.
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Grant
Layered return poles for magnetic write heads
Patent number
7,933,096
Issue date
Apr 26, 2011
Hitachi Global Storage Technologies Netherlands B.V.
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Grant
Method of manufacturing a perpendicular magnetic recording write he...
Patent number
7,748,103
Issue date
Jul 6, 2010
Hitachi Global Storage Technologies Netherlands B.V.
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Grant
Perpendicular magnetic recording head with photoresist dam between...
Patent number
7,612,963
Issue date
Nov 3, 2009
Hitachi Global Storage Technologies Netherlands B.V.
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Grant
Perpendicular magnetic write head having a magnetic write pole with...
Patent number
7,576,951
Issue date
Aug 18, 2009
Hitachi Global Storage Technologies Netherlands B.V.
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Grant
Method for making a perpendicular magnetic recording write head
Patent number
7,509,729
Issue date
Mar 31, 2009
Hitachi Global Storage Technologies Netherlands B.V.
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Grant
Damascene method for forming write coils of magnetic heads
Patent number
7,275,306
Issue date
Oct 2, 2007
Hitachi Global Storage Technologies Netherlands B.V.
Donald Giles Allen
G11 - INFORMATION STORAGE
Information
Patent Grant
Prevention of electrostatic wafer sticking in plasma deposition/etc...
Patent number
7,030,035
Issue date
Apr 18, 2006
Hitachi Global Storage Technologies Netherlands, B.V.
Donald G. Allen
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Cam driven paddle assembly for a plating cell
Patent number
6,955,747
Issue date
Oct 18, 2005
International Business Machines Corporation
Robert M. Browne
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Vacuum chuck for reducing distortion of semiconductor and GMR head...
Patent number
6,446,948
Issue date
Sep 10, 2002
International Business Machines Corporation
Donald Giles Allen
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information
Patent Grant
Method and apparatus for preventing write operations in the presenc...
Patent number
6,115,200
Issue date
Sep 5, 2000
International Business Machines Corporation
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Grant
Method and means for maintaining data integrity in disk drives resu...
Patent number
5,903,409
Issue date
May 11, 1999
International Business Machines Corporation
Donald Giles Allen
G11 - INFORMATION STORAGE
Information
Patent Grant
Base casting/cover for separating pack bounce and spindle tilt mode...
Patent number
5,790,344
Issue date
Aug 4, 1998
International Business Machines Corporation
Donald Giles Allen
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
METHOD OF MAKING A HARD DISK DRIVE WRITE POLE USING A TRI-TONE ATTE...
Publication number
20240027892
Publication date
Jan 25, 2024
Western Digital Technologies, Inc.
Xianzhong Zeng
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
METHOD FOR MANUFACTURING A PERPENDICULAR MAGNETIC WRITE HEAD USING...
Publication number
20130082027
Publication date
Apr 4, 2013
Hitachi Global Storage Technologies Netherlands B.V.
Guomin Mao
G11 - INFORMATION STORAGE
Information
Patent Application
MAGNETIC WRITE HEAD HAVING AN ELECTROPLATED WRITE POLE WITH A LEADI...
Publication number
20130020204
Publication date
Jan 24, 2013
Donald G. Allen
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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
MAGNETIC WRITE HEAD FABRICATION WITH INTEGRATED ELECTRICAL LAPPING...
Publication number
20120094009
Publication date
Apr 19, 2012
Donald Allen
G11 - INFORMATION STORAGE
Information
Patent Application
MAGNETIC WRITE HEAD MANUFACTURED BY AN ENHANCED DAMASCENE PROCESS P...
Publication number
20110151279
Publication date
Jun 23, 2011
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Application
METHOD FOR MANUFACTURING A MAGNETIC WRITE HEAD HAVING A WRAP AROUND...
Publication number
20110146062
Publication date
Jun 23, 2011
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Application
PMR WRITER AND METHOD OF FABRICATION
Publication number
20110134569
Publication date
Jun 9, 2011
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Application
WRITE HEAD WITH DIFFERENT UPPER AND LOWER YOKE LENGTHS AND METHODS...
Publication number
20100157471
Publication date
Jun 24, 2010
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Application
Layered return poles for magnetic write heads
Publication number
20090168260
Publication date
Jul 2, 2009
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Application
INTERLEAVED HELICAL COILS ON PERPENDICULAR HEADS
Publication number
20090057160
Publication date
Mar 5, 2009
Donald G. Allen
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Application
Damascene coil design for a perpendicular magnetic recording head
Publication number
20080002290
Publication date
Jan 3, 2008
HITACHI GLOBAL STORAGE TECHNOLOGIES
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Application
PERPENDICULAR MAGNETIC RECORDING WRITE HEAD WITH NOTCHED TRAILING S...
Publication number
20070263324
Publication date
Nov 15, 2007
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Application
Perpendicular magnetic write head having a magnetic write pole with...
Publication number
20070258167
Publication date
Nov 8, 2007
HITACHI GLOBAL STORAGE TECHNOLOGIES
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Application
METHOD FOR MAKING A PERPENDICULAR MAGNETIC RECORDING WRITE HEAD
Publication number
20070245544
Publication date
Oct 25, 2007
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.
Donald G. Allen
G11 - INFORMATION STORAGE
Information
Patent Application
Prevention of electrostatic wafer sticking in plasma deposition/etc...
Publication number
20050255705
Publication date
Nov 17, 2005
Donald G. Allen
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Damascene method for forming write coils of magnetic heads
Publication number
20050125990
Publication date
Jun 16, 2005
Donald Giles Allen
G11 - INFORMATION STORAGE
Information
Patent Application
Cam driven paddle assembly for a plating cell
Publication number
20040055876
Publication date
Mar 25, 2004
International Business Machines.
Robert M. Browne
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR