Method of forming a beveled writing pole of a perpendicular writing element

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7100266
APP PUB NO 20020170165A1
SERIAL NO

10039201

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A beveled writing pole includes a top portion, a beveled portion, and a throat portion. The top portion has an end that defines a writing pole tip. The beveled portion adjoins the top portion and has a bevel that extends from the writing pole tip and increases a thickness of the writing pole proximate the pole tip. The throat portion is formed of the top and beveled portions and has tapered sides that extend from the writing pole tip and increase a width of the writing pole proximate the writing pole tip. A method of forming the beveled writing pole is also presented.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SEAGATE TECHNOLOGY LLCSCOTTS VALLEY, CA5040

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Amin, Nurul St. Paul, MN 75 897
Kong, Vee S Richfield, MN 5 73
Michel, Richard P Minneapolis, MN 8 85
Plumer, Martin L Bloomington, MN 10 121
van, Ek Johannes Minnetonka, MN 14 169

Cited Art Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
4390916 Single track magnetic head assembly 6 1980
 
BULL S.A. (1)
4771350 Magnetic reading/writing transducer for perpendicular recording 24 1985
 
HEWLETT-PACKARD COMPANY (1)
5073836 Single pole write and a differential magneto-resistive read for perpendicular recording 52 1989
 
SUMITOMO METAL INDUSTRIES, LTD. (1)
5225953 Magnetic thin film head of a single magnetic pole for perpendicular recording and reproduction 38 1992
 
ALPS ELECTRIC CO., LTD. (1)
4811142 Magnetic head for vertical magnetic recording and method of producing same 7 1987
 
WESTERN DIGITAL (FREMONT), INC. (1)
5726841 Thin film magnetic head with trimmed pole tips etched by focused ion beam for undershoot reduction 69 1996
 
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. (1)
* 6510022 Method for shaping pole pieces of magnetic heads by chemical mechanical polishing 9 2000
 
HITACHI GLOBAL STORAGE TECHNOLOGIES JAPAN, LTD. (2)
* 4550353 Thin-film magnetic head and method for fabricating the same 43 1983
6710973 Single pole type recording head including tapered edges 63 2001
 
FUJITSU LIMITED (1)
4974110 Thin film magnetic head for perpendicular recording and reproducing 40 1989
 
OLYMPUS OPTICAL CO., LTD. (1)
4764833 Perpendicular magnetic head 5 1985
 
COMMISSARIAT A L'ENERGIE ATOMIQUE (1)
5196976 Magnetoresistance magnetic head for perpendicular recording on a magnetic support 54 1990
 
MAXTOR CORPORATION (1)
* 4912584 Method for fabricating magnetic recording poles 47 1988
 
SEAGATE TECHNOLOGY LLC (3)
4839761 Magnetic head for perpendicular magnetic recording system 16 1987
4982301 Magnetic head for perpendicular magnetic recording system and process 18 1990
6504675 Perpendicular magnetic recording heads with write pole shaped to reduce skew effects during writing 159 2001
 
KABUSHIKI KAISHA TOSHIBA (3)
5680283 Magnetic head and magnetic disk drive 18 1995
5854727 Magnetic head and magnetic disk drive 17 1997
5995341 Magnetic disk drive recording a signal with a skew angle 67 1998
 
MKE-QUANTUM COMPONENTS COLORADO LCC (1)
* 5075956 Method of making recording heads with side shields 97 1990
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (1)
* 2009/0201,611 Perpendicular write head with tapered main pole 3 2009
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (3)
8351152 Magnetic writer structures formed using post-deposition tilting 1 2009
* 2011/0051,284 SYSTEMS AND METHODS FOR FABRICATING MAGNETIC WRITER STRUCTURES USING POST-DEPOSITION TILTING 2 2009
8416537 Recording head with tilted orientation 0 2009
 
MAXTOR CORPORATION (3)
* 7324304 Tapered write pole for reduced skew effect 37 2004
* 7430095 Tapered write pole for reduced skew effect 31 2007
* 2007/0247,747 Tapered write pole for reduced skew effect 4 2007
 
WESTERN DIGITAL TECHNOLOGIES, INC. (9)
* 8047894 Apparatus for evaluating the quality of a lapping plate 2 2005
* 7914362 Method of evaluating the quality of a lapping plate 2 2005
* 2007/0123,150 Method of evaluating the quality of a lapping plate 3 2005
* 2007/0123,149 Apparatus for evaluating the quality of a lapping plate 2 2005
8139320 Write head having independent side shield and trailing shield throat height 9 2007
* 2009/0168,257 INDEPENDENT SIDE SHIELD AND TOP SHIELD THROAT HEIGHT CONTROL FOR HIGH LINEAR DENSITY WRAP AROUND SHIELD WRITE HEAD 8 2007
8233234 Stepped main pole for perpendicular write heads in hard disk drives and method of making same 11 2008
* 2010/0157,475 STEPPED MAIN POLE FOR PERPENDICULAR WRITE HEADS IN HARD DISK DRIVES AND METHOD OF MAKING SAME 5 2008
8347489 Method for manufacturing a perpendicular magnetic write head having a leading edge tapered write pole, self aligned side shield and independent trailing shield 5 2010
 
SEAGATE TECHNOLOGY LLC (6)
8310782 Dedicated ID-OD writer with beveled pole tips and method of manufacture 12 2008
* 2009/0251,821 DEDICATED ID-OD WRITER WITH BEVELED POLE TIPS AND METHOD OF MANUFACTURE 14 2008
8405931 Magnetic main write pole 2 2009
* 2010/0328,817 MAGNETIC MAIN WRITE POLE 3 2009
* 8937852 Write pole design 0 2013
* 2014/0119,163 WRITE POLE DESIGN 0 2013
 
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. (1)
* 7483243 Magnetic head with recessed portion, and magnetic recording and reproduction apparatus comprising the same 2 2005
 
TDK CORPORATION (2)
* 7545603 Magnetic head and manufacturing method thereof 1 2005
* 2005/0243,466 Magnetic head and manufacturing method thereof 2 2005
 
GLOBALFOUNDRIES INC. (3)
8240024 Methods for fabricating magnetic transducers using post-deposition tilting 2 2009
* 2011/0047,785 METHODS FOR FABRICATING MAGNETIC TRANSDUCERS USING POST-DEPOSITION TILTING 6 2009
9230564 Methods for fabricating magnetic transducers using post-deposition tilting 0 2012
 
WESTERN DIGITAL (FREMONT), LLC (18)
8320076 Method and system for providing a magnetic recording transducer including an assist pole having surfaces angled with respect to the ABS 126 2008
8196285 Method and system for providing a pole for a perpendicular magnetic recording head using a multi-layer hard mask 130 2008
8254060 Straight top main pole for PMR bevel writer 129 2009
8225488 Method for providing a perpendicular magnetic recording (PMR) pole 130 2009
9346672 Methods for fabricating damascene write poles using ruthenium hard masks 0 2009
8458892 Method for providing a perpendicular magnetic recording transducer using a low energy mill 120 2010
8705205 Magnetic recording head having a dual sidewall angle 122 2011
8893376 Method of forming a straight top main pole for PMR bevel writer 0 2012
9478236 Perpendicular magnetic recording write head 0 2012
8844120 Method for providing a magnetic recording transducer including an assist pole having surfaces angled with respect to the ABS 0 2012
8861133 Method and system for providing a perpendicular magnetic recording transducer using a low energy mill 1 2013
9263067 Process for making PMR writer with constant side wall angle 0 2013
9275657 Process for making PMR writer with non-conformal side gaps 0 2013
9343086 Magnetic recording write transducer having an improved sidewall angle profile 0 2013
9280990 Method for fabricating a magnetic writer using multiple etches 1 2014
9305583 Method for fabricating a magnetic writer using multiple etches of damascene materials 2 2014
8988825 Method for fabricating a magnetic writer having half-side shields 4 2014
9508363 Method for fabricating a magnetic write pole having a leading edge bevel 0 2014
 
HEADWAY TECHNOLOGIES, INC. (8)
* 2005/0219,743 Perpendicular write head with tapered main pole 35 2004
* 7322095 Process of manufacturing a four-sided shield structure for a perpendicular write head 47 2004
* 2005/0237,665 Four sided shield structure for a perpendicular write head 4 2004
* 7916425 Magnetic head having angled pole portions 15 2007
* 2008/0316,653 Magnetic head for perpendicular magnetic recording and method of manufacturing same 24 2007
* 7777987 Perpendicular write head with tapered main pole 9 2009
* 7777988 Perpendicular write head with tapered main pole 11 2009
* 2009/0207,525 Perpendicular write head with tapered main pole 3 2009
 
KABUSHIKI KAISHA TOSHIBA (1)
* 2004/0151,036 Magnetic head for performing perpendicular magnetic recording in a disk drive 3 2003
 
WISSELINK'S TEXTIELFABRIEKEN N.V., A CORP. OF THE NETHERLANDS (1)
4667705 Weft change system with a weaving machine 2 1986
* Cited By Examiner

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