US Patent No: 7,199,977

Number of patents in Portfolio can not be more than 2000

Magnetic recording disk having a transition zone

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Importance

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Abstract

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A disk drive having a magnetic recording disk with a transition zone is described. A surface texture of the transition zone induces the head to fly at a greater height than when operating over a data zone, while transitioning the head to a landing zone to park.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
WD MEDIA, INC.SAN JOSE, CA181

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nishihira, Henry S San Jose, CA 9 384
Suzuki, Shoji San Jose, CA 174 3226

Cited Art Landscape

Patent Info (Count) # Cites Year
 
KOMAG, INC. (1)
5,673,156 Hard disk drive system having virtual contact recording 52 1995
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
5,377,058 Fly height servo control of read/write head suspension 177 1992
 
MAXTOR CORPORATION (1)
6,597,539 Suspension assembly for supporting a read/write head over a rotating storage disk with dynamically adjustable fly height 36 1999
 
UNITED MODULE CORPORATION (2)
5,798,164 Zone textured magnetic recording media 16 1995
6,139,936 Discrete track media produced by underlayer laser ablation 29 1997
 
SONY CORPORATION (1)
5,875,083 Magnetic disc having planiarized CSS zone 26 1996
 
SEAGATE TECHNOLOGY LLC (5)
6,020,045 Textured magnetic recording medium having a transition zone 21 1996
* 5,870,265 Magnetic recording disc having an idle fly zone and tapering transition zones on each side thereof 8 1997
6,473,259 Disk head height control 22 1999
6,529,347 Disc drive slider having textured pads 9 2001
6,563,673 Method and apparatus for minimizing slider fly heights over patterned media 23 2001
 
WD MEDIA, INC. (1)
6,381,090 Hard disk drive head-media system having reduced stiction and low fly height 70 1998
 
HGST NETHERLANDS B.V. (2)
6,075,683 Disk drive with passive multiple fly height slider and cooperative disk pattern 13 1993
5,870,250 Method and apparatus for improving file capacity using different flying height profiles 35 1996
 
SAMSUNG INFORMATION SYSTEMS AMERICA, INC. (1)
* 5,644,451 Mechanism for loading and unloading of read/write heads at an inner diameter of a disk 20 1995
 
TDK CORPORATION (1)
6,330,124 Magnetic disk device using a contact start stop system 6 2000
 
SHOWA DENKO K.K. (1)
6,057,984 Method for data writing/read-out using a contact start and stop system 13 1999
 
TOSHIBA STORAGE DEVICE CORPORATION (1)
* 6,351,345 Air bearing slider and method of producing the same 29 1999
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
WESTERN DIGITAL TECHNOLOGIES, INC. (3)
8,993,134 Electrically conductive underlayer to grow FePt granular media with (001) texture on glass substrates 0 2012
9,001,630 Energy assisted magnetic recording medium capable of suppressing high DC readback noise 0 2014
9,257,134 Allowing fast data zone switches on data storage devices 0 2014
 
WD Media (Singapore) Pte. Ltd. (10)
9,047,903 Perpendicular magnetic recording medium and process for manufacture thereof 0 2009
9,005,782 Magnetic disk and method of manufacturing the same 0 2009
* 2011/0026,162 MAGNETIC DISK AND METHOD OF MANUFACTURING THE SAME 2 2009
8,877,359 Magnetic disk and method for manufacturing same 1 2009
8,859,118 Perpendicular magnetic recording medium 1 2011
8,908,315 Evaluation method of magnetic disk, manufacturing method of magnetic disk, and magnetic disk 0 2011
9,240,204 Perpendicular magnetic recording disc 0 2011
8,828,566 Perpendicular magnetic recording disc 0 2011
9,349,404 Perpendicular magnetic recording disc 0 2011
8,951,651 Perpendicular magnetic recording disk 0 2011
 
WD MEDIA, INC. (4)
7,733,605 Magnetic recording disk having a transition zone 45 2006
* 2007/0070,549 Magnetic recording disk having a transition zone 44 2006
* 2007/0070,541 Magnetic recording disk having a transition zone 1 2006
8,064,156 Magnetic recording disk having a transition zone 44 2010
 
WD Media, LLC (26)
9,330,685 Press system for nano-imprinting of recording media with a two step pressing method 0 2009
9,028,985 Recording media with multiple exchange coupled magnetic layers 0 2011
9,029,308 Low foam media cleaning detergent 0 2012
9,269,480 Systems and methods for forming magnetic recording media with improved grain columnar growth for energy assisted magnetic recording 0 2012
8,941,950 Underlayers for heat assisted magnetic recording (HAMR) media 0 2012
9,034,492 Systems and methods for controlling damping of magnetic media for heat assisted magnetic recording 0 2013
8,980,076 Electro-deposited passivation coatings for patterned media 0 2013
9,153,268 Lubricants comprising fluorinated graphene nanoribbons for magnetic recording media structure 0 2013
9,183,867 Systems and methods for forming implanted capping layers in magnetic media for magnetic recording 0 2013
9,093,122 Systems and methods for improving accuracy of test measurements involving aggressor tracks written to disks of hard disk drives 0 2013
9,339,978 Press system with interleaved embossing foil holders for nano-imprinting of recording media 0 2013
8,947,987 Systems and methods for providing capping layers for heat assisted magnetic recording media 1 2013
8,867,322 Systems and methods for providing thermal barrier bilayers for heat assisted magnetic recording media 1 2013
9,064,521 Manufacturing of hard masks for patterning magnetic media 1 2013
9,047,880 Heat assisted magnetic recording method for media having moment keeper layer 0 2013
9,296,082 Disk buffing apparatus with abrasive tape loading pad having a vibration absorbing layer 0 2013
9,177,585 Magnetic media capable of improving magnetic properties and thermal management for heat-assisted magnetic recording 0 2013
9,025,264 Methods for measuring media performance associated with adjacent track interference 0 2014
9,042,053 Thermally stabilized perpendicular magnetic recording medium 0 2014
9,159,350 High damping cap layer for magnetic recording media 0 2014
9,082,447 Determining storage media substrate material type 0 2014
9,227,324 Mandrel for substrate transport system with notch 0 2014
8,995,078 Method of testing a head for contamination 0 2014
9,218,850 Exchange break layer for heat-assisted magnetic recording media 0 2014
9,280,998 Acidic post-sputter wash for magnetic recording media 0 2015
9,275,669 TbFeCo in PMR media for SNR improvement 0 2015
 
WESTERN DIGITAL (FREMONT), LLC (1)
9,196,283 Method for providing a magnetic recording transducer using a chemical buffer 0 2013
 
WESTERN DIGITAL CORPORATION (3)
9,093,100 Magnetic recording medium including tailored exchange coupling layer and manufacturing method of the same 0 2013
9,142,241 Perpendicular magnetic recording medium and method of manufacturing the same 0 2013
9,190,094 Perpendicular recording media with grain isolation initiation layer and exchange breaking layer for signal-to-noise ratio enhancement 0 2013
 
Singapore, PTE, Ltd (1)
9,177,586 Magnetic disk and manufacturing method thereof 0 2009
* Cited By Examiner

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Oct 3, 2018
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