Arrangements for demagnetisation of heads

Industry

CPC
G11B5/465

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Parent Industries

GPHYSICS G11Information storage G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER G11B5/00Recording by magnetisation or demagnetisation of a record carrier Reproducing by magnetic means Record carriers therefor

Current Industry

G11B5/465Arrangements for demagnetisation of heads

Industries

Patents Grantslast 30 patents

Information Patent Grant
Permanent magnet degausser mechanism for destroying the functionali...
- Patent number 11,682,422
- Issue date Jun 20, 2023
- Sepehr Rajaie
- G11 - INFORMATION STORAGE
Information Patent Grant
Switching period control of microwave assisted magnetic recording f...
- Patent number 10,283,159
- Issue date May 7, 2019
- Western Digital Technologies, Inc.
- Satoshi Tabata
- G11 - INFORMATION STORAGE
Information Patent Grant
Reset of magnetic domains in write head via external field
- Patent number 9,520,148
- Issue date Dec 13, 2016
- Seagate Technology LLC
- Yanzhang Liu
- G11 - INFORMATION STORAGE
Information Patent Grant
Implementing asymmetric degauss control for write head for hard dis...
- Patent number 9,280,993
- Issue date Mar 8, 2016
- HGST Netherlands B.V.
- John Contreras
- G11 - INFORMATION STORAGE
Information Patent Grant
Storage device having degauss circuitry with ramp generator for use...
- Patent number 8,773,817
- Issue date Jul 8, 2014
- LSI Corporation
- Paul Mazur
- G11 - INFORMATION STORAGE
Information Patent Grant
Storage device having degauss circuitry generating degauss signal w...
- Patent number 8,737,006
- Issue date May 27, 2014
- LSI Corporation
- Boris Livshitz
- G11 - INFORMATION STORAGE
Information Patent Grant
Storage device having degauss circuitry with separate control of de...
- Patent number 8,705,196
- Issue date Apr 22, 2014
- LSI Corporation
- Boris Livshitz
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and circuitry for programmably controlling degauss write cur...
- Patent number 8,503,127
- Issue date Aug 6, 2013
- Texas Instruments Incorporated
- Marius Vicentiu Dina
- G11 - INFORMATION STORAGE
Information Patent Grant
Degauss control for magnetic disk-drive preamplifier
- Patent number 7,813,068
- Issue date Oct 12, 2010
- Texas Instruments Incorporated
- Toru Takeuchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Channel postamble extension to de-gauss pole tips
- Patent number 7,515,371
- Issue date Apr 7, 2009
- Maxtor Corporation
- Bruce Buch
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive head reset for parked head using closely spaced magnet
- Patent number 7,474,510
- Issue date Jan 6, 2009
- Seagate Technology LLC
- Lydia Baril
- G11 - INFORMATION STORAGE
Information Patent Grant
Head amplifier circuit with function for degaussing residual magnet...
- Patent number 7,460,324
- Issue date Dec 2, 2008
- Kabushiki Kaisha Toshiba
- Yusuke Ohinata
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for recording bursts on a disk and related apparatus
- Patent number 7,450,328
- Issue date Nov 11, 2008
- Samsung Electronics Co., Ltd.
- Won-choul Yang
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin laminated single pole perpendicular write head
- Patent number 7,420,780
- Issue date Sep 2, 2008
- Headay Technologies, Inc.
- Kochan Ju
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for write head demagnetization
- Patent number 7,411,756
- Issue date Aug 12, 2008
- Agere Systems, INC
- Ross Schwensen Wilson
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for magnetization test of write head in a disk...
- Patent number 7,411,753
- Issue date Aug 12, 2008
- Kabushiki Kaisha Toshiba
- Yuji Sakai
- G11 - INFORMATION STORAGE
Information Patent Grant
Degauss waveform generator for perpendicular recording write head
- Patent number 7,372,653
- Issue date May 13, 2008
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroaki Suzuki
- G11 - INFORMATION STORAGE
Information Patent Grant
Write head demagnetizer
- Patent number 7,106,536
- Issue date Sep 12, 2006
- Agere Systems Inc.
- Hao Fang
- G11 - INFORMATION STORAGE
Information Patent Grant
Demagnetizing a head in a disk drive by increasing the frequency of...
- Patent number 7,092,186
- Issue date Aug 15, 2006
- Western Digital Technologies, Inc.
- Dennis W. Hogg
- G11 - INFORMATION STORAGE
Information Patent Grant
Removing residual magnetization in a data transducer
- Patent number 7,088,537
- Issue date Aug 8, 2006
- Seagate Technology LLC
- Robert D. Cronch
- G11 - INFORMATION STORAGE
Information Patent Grant
Thin laminated single pole perpendicular write head
- Patent number 7,064,924
- Issue date Jun 20, 2006
- Headway Technologies, Inc.
- Kochan Ju
- G11 - INFORMATION STORAGE
Information Patent Grant
Flux closed single pole perpendicular head for ultra narrow track
- Patent number 7,057,837
- Issue date Jun 6, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Hardayal Singh Gill
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic head and magnetic storage apparatus
- Patent number 7,054,106
- Issue date May 30, 2006
- Hitachi Global Storage Technologies Japan, Ltd.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Grant
Disk drive head resetting system using slider heater
- Patent number 7,042,674
- Issue date May 9, 2006
- Maxtor Corporation
- Lydia Baril
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for read error recovery in a disk drive with a...
- Patent number 6,975,474
- Issue date Dec 13, 2005
- Kabushiki Kaisha Toshiba
- Hiroyuki Naka
- G11 - INFORMATION STORAGE
Information Patent Grant
Multiple magnetoresistive (MR) layer sensor element having longitud...
- Patent number 6,754,048
- Issue date Jun 22, 2004
- Headway Technologies, Inc.
- Min Li
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for performing spin valve combined pinned laye...
- Patent number 6,728,055
- Issue date Apr 27, 2004
- International Business Machines Corporation
- Hardayal Singh Gill
- G11 - INFORMATION STORAGE
Information Patent Grant
Composite write pole for a magnetic recording head
- Patent number 6,721,131
- Issue date Apr 13, 2004
- Seagate Technology LLC
- Dmitri Litvinov
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic field sensor with perpendicular axis sensitivity, comprisi...
- Patent number 6,577,124
- Issue date Jun 10, 2003
- Koninklijke Philips Electronics N.V.
- Reinder Coehoorn
- G11 - INFORMATION STORAGE
Information Patent Grant
Read head with file resettable dual spin valve sensor
- Patent number 6,449,134
- Issue date Sep 10, 2002
- International Business Machines Corporation
- Robert Stanley Beach
- B82 - NANO-TECHNOLOGY

Patents Applicationslast 30 patents

Information Patent Application
IMPLEMENTING ASYMMETRIC DEGAUSS CONTROL FOR WRITE HEAD FOR HARD DIS...
- Publication number 20150170687
- Publication date Jun 18, 2015
- HGST NETHERLANDS B.V.
- John Contreras
- G11 - INFORMATION STORAGE
Information Patent Application
STORAGE DEVICE HAVING DEGAUSS CIRCUITRY CONFIGURED FOR GENERATING D...
- Publication number 20140240864
- Publication date Aug 28, 2014
- LSI Corporation
- Boris Livshitz
- G11 - INFORMATION STORAGE
Information Patent Application
STORAGE DEVICE HAVING DEGAUSS CIRCUITRY GENERATING DEGAUSS SIGNAL W...
- Publication number 20140071561
- Publication date Mar 13, 2014
- LSI Corporation
- Boris Livshitz
- G11 - INFORMATION STORAGE
Information Patent Application
STORAGE DEVICE HAVING DEGAUSS CIRCUITRY WITH RAMP GENERATOR FOR USE...
- Publication number 20140029138
- Publication date Jan 30, 2014
- LSI Corporation
- Paul Mazur
- G11 - INFORMATION STORAGE
Information Patent Application
STORAGE DEVICE HAVING DEGAUSS CIRCUITRY WITH SEPARATE CONTROL OF DE...
- Publication number 20130271867
- Publication date Oct 17, 2013
- LSI Corporation
- Boris Livshitz
- G11 - INFORMATION STORAGE
Information Patent Application
METHOD AND CIRCUITRY FOR PROGRAMMABLY CONTROLLING DEGAUSS WRITE CUR...
- Publication number 20120105992
- Publication date May 3, 2012
- TEXAS INSTRUMENTS INCORPORATED
- Marius Vicentiu Dina
- G11 - INFORMATION STORAGE
Information Patent Application
DEGAUSS CONTROL FOR MAGNETIC DISK-DRIVE PREAMPLIFIER
- Publication number 20090284860
- Publication date Nov 19, 2009
- TORU TAKEUCHI
- G11 - INFORMATION STORAGE
Information Patent Application
Degaussing for write head
- Publication number 20070153410
- Publication date Jul 5, 2007
- Motomu Hashizume
- G11 - INFORMATION STORAGE
Information Patent Application
Method for recording bursts on a disk and related apparatus
- Publication number 20070103807
- Publication date May 10, 2007
- Won-choul Yang
- G11 - INFORMATION STORAGE
Information Patent Application
Thin laminated single pole perpendicular write head
- Publication number 20060203382
- Publication date Sep 14, 2006
- HEADWAY TECHNOLOGIES, INC.
- Kochan Ju
- G11 - INFORMATION STORAGE
Information Patent Application
Programmable write head drive de-gaussing circuit
- Publication number 20060176597
- Publication date Aug 10, 2006
- Tuan Van Ngo
- G11 - INFORMATION STORAGE
Information Patent Application
Degauss waveform generator for perpendicular recording write head
- Publication number 20060158764
- Publication date Jul 20, 2006
- Hitachi Global Storage Technologies Netherlands B.V.
- Hiroaki Suzuki
- G11 - INFORMATION STORAGE
Information Patent Application
Head amplifier circuit with function for degaussing residual magnet...
- Publication number 20060139787
- Publication date Jun 29, 2006
- Kabushiki Kaisha Toshiba
- Yusuke Ohinata
- G11 - INFORMATION STORAGE
Information Patent Application
Write head demagnetizer
- Publication number 20060066973
- Publication date Mar 30, 2006
- Agere Systems Inc.
- Hao Fang
- G11 - INFORMATION STORAGE
Information Patent Application
Method and apparatus for magnetization test of write head in a disk...
- Publication number 20060044659
- Publication date Mar 2, 2006
- Kabushiki Kaisha Toshiba
- Yuji Sakai
- G11 - INFORMATION STORAGE
Information Patent Application
Method and apparatus for degaussing write head in a disk drive
- Publication number 20050243457
- Publication date Nov 3, 2005
- Kabushiki Kaisha Toshiba
- Manabu Akamatsu
- G11 - INFORMATION STORAGE
Information Patent Application
Removing residual magnetization in a data transducer
- Publication number 20050200997
- Publication date Sep 15, 2005
- Seagate Technology LLC
- Robert D. Cronch
- G11 - INFORMATION STORAGE
Information Patent Application
Method and apparatus for write head demagnetization
- Publication number 20050190476
- Publication date Sep 1, 2005
- Ross Schwensen Wilson
- G11 - INFORMATION STORAGE
Information Patent Application
Thin laminated single pole perpendicular write head
- Publication number 20040264047
- Publication date Dec 30, 2004
- HEADWAY TECHNOLOGIES, INC.
- Kochan Ju
- G11 - INFORMATION STORAGE
Information Patent Application
Disk drive and magnetic head for perpendicular magnetic recording
- Publication number 20040228031
- Publication date Nov 18, 2004
- Kabushiki Kaisha Toshiba
- Akihiko Takeo
- G11 - INFORMATION STORAGE
Information Patent Application
Method and apparatus for read error recovery in a disk drive with a...
- Publication number 20040212909
- Publication date Oct 28, 2004
- Kabushiki Kaisha Toshiba
- Hiroyuki Naka
- G11 - INFORMATION STORAGE
Information Patent Application
Flux closed single pole perpendicular head for ultra narrow track
- Publication number 20040075927
- Publication date Apr 22, 2004
- International Business Machines Corporation
- Hardayal Singh Gill
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic head and magnetic storage apparatus
- Publication number 20040037002
- Publication date Feb 26, 2004
- Hitachi, Ltd.
- Kazue Kudo
- G11 - INFORMATION STORAGE
Information Patent Application
Method for fabricating a non-parallel magnetically biased multiple...
- Publication number 20030039078
- Publication date Feb 27, 2003
- HEADWAY TECHNOLOGIES, INC.
- Min Li
- B82 - NANO-TECHNOLOGY
Information Patent Application
Composite write pole for a magnetic recording head
- Publication number 20020131203
- Publication date Sep 19, 2002
- Dmitri Litvinov
- G11 - INFORMATION STORAGE
Information Patent Application
System and method providing programmable GMR head pin layer reset i...
- Publication number 20020118475
- Publication date Aug 29, 2002
- David Ng
- G11 - INFORMATION STORAGE
Information Patent Application
READ HEAD WITH FILE RESETTABLE DUAL SPIN VALVE SENSOR
- Publication number 20020067577
- Publication date Jun 6, 2002
- ROBERT STANLEY BEACH
- B82 - NANO-TECHNOLOGY
Information Patent Application
MAGNETIC FIELD SENSOR WITH PERPENDICULAR AXIS SENSITIVITY, COMPRISI...
- Publication number 20010013776
- Publication date Aug 16, 2001
- U.S. PHILIPS CORPORATION
- REINDER COEHOORN
- B82 - NANO-TECHNOLOGY

Arrangements for demagnetisation of heads

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Permanent magnet degausser mechanism for destroying the functionali...

Switching period control of microwave assisted magnetic recording f...

Reset of magnetic domains in write head via external field

Implementing asymmetric degauss control for write head for hard dis...

Storage device having degauss circuitry with ramp generator for use...

Storage device having degauss circuitry generating degauss signal w...

Storage device having degauss circuitry with separate control of de...

Method and circuitry for programmably controlling degauss write cur...

Degauss control for magnetic disk-drive preamplifier

Channel postamble extension to de-gauss pole tips

Disk drive head reset for parked head using closely spaced magnet

Head amplifier circuit with function for degaussing residual magnet...

Method for recording bursts on a disk and related apparatus

Thin laminated single pole perpendicular write head

Method and apparatus for write head demagnetization

Method and apparatus for magnetization test of write head in a disk...

Degauss waveform generator for perpendicular recording write head

Write head demagnetizer

Demagnetizing a head in a disk drive by increasing the frequency of...

Removing residual magnetization in a data transducer

Thin laminated single pole perpendicular write head

Flux closed single pole perpendicular head for ultra narrow track

Magnetic head and magnetic storage apparatus

Disk drive head resetting system using slider heater

Method and apparatus for read error recovery in a disk drive with a...

Multiple magnetoresistive (MR) layer sensor element having longitud...

Method and apparatus for performing spin valve combined pinned laye...

Composite write pole for a magnetic recording head

Magnetic field sensor with perpendicular axis sensitivity, comprisi...

Read head with file resettable dual spin valve sensor

Patents Applicationslast 30 patents

IMPLEMENTING ASYMMETRIC DEGAUSS CONTROL FOR WRITE HEAD FOR HARD DIS...

STORAGE DEVICE HAVING DEGAUSS CIRCUITRY CONFIGURED FOR GENERATING D...

STORAGE DEVICE HAVING DEGAUSS CIRCUITRY GENERATING DEGAUSS SIGNAL W...

STORAGE DEVICE HAVING DEGAUSS CIRCUITRY WITH RAMP GENERATOR FOR USE...

STORAGE DEVICE HAVING DEGAUSS CIRCUITRY WITH SEPARATE CONTROL OF DE...

METHOD AND CIRCUITRY FOR PROGRAMMABLY CONTROLLING DEGAUSS WRITE CUR...

DEGAUSS CONTROL FOR MAGNETIC DISK-DRIVE PREAMPLIFIER

Degaussing for write head

Method for recording bursts on a disk and related apparatus

Thin laminated single pole perpendicular write head

Programmable write head drive de-gaussing circuit

Degauss waveform generator for perpendicular recording write head

Head amplifier circuit with function for degaussing residual magnet...

Write head demagnetizer

Method and apparatus for magnetization test of write head in a disk...

Method and apparatus for degaussing write head in a disk drive

Removing residual magnetization in a data transducer

Method and apparatus for write head demagnetization

Thin laminated single pole perpendicular write head

Disk drive and magnetic head for perpendicular magnetic recording

Method and apparatus for read error recovery in a disk drive with a...

Flux closed single pole perpendicular head for ultra narrow track

Magnetic head and magnetic storage apparatus

Method for fabricating a non-parallel magnetically biased multiple...

Composite write pole for a magnetic recording head

System and method providing programmable GMR head pin layer reset i...

READ HEAD WITH FILE RESETTABLE DUAL SPIN VALVE SENSOR

MAGNETIC FIELD SENSOR WITH PERPENDICULAR AXIS SENSITIVITY, COMPRISI...