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Dynamic magnetic information storage or retrieval January recently filed with US Patent Office 01/11

Below are recently published patent applications awaiting approval from the USPTO. Recent week's RSS XML file available below.
Listing for abstract view: USPTO application #, Title, Abstract excerpt,Patent Agent. Listing format for list view: USPTO National Class full category number, title of the patent application.
  
01/27/2011 > patent applications in patent subcategories. recently filed with US Patent Office

20110019299 - Load/unload control method and apparatus for a magnetic disk drive: According to one embodiment, an estimation method comprises measuring and creating. The measuring is configured to measure a head velocity and a terminal voltage of a coil of a voice coil motor at least two times before unload in a control system eliminating an influence caused by a transient response... Agent: Knobbe Martens Olson & Bear LLP

20110019298 - Testing magnetic disk performance with a single slider simulating sliders of various disk drive systems: Magnetic disk drive systems and associated methods are described for testing magnetic disk performance for certification with a plurality of magnetic disk drive systems prior to installation. The test system may position a slider at a first spacing between the magnetic disk in the slider and simulate the recording performance... Agent: Duft Bornsen & Fishman, LLP

20110019302 - Method of refreshing data stored on a disk: According to one embodiment, a disk comprises an area which comprises a plurality of data tracks and is partitioned into a first segment and a plurality of second segments. A controller detects that a segment to be refreshed next is one of the plurality of second segments. The controller saves... Agent: Knobbe Martens Olson & Bear LLP

20110019300 - Pulse writing for bit patterned and continuous media recording: Data storage systems are provided. Data storage systems illustratively include a writing element and a recording medium. In some embodiments, the writing element generates first and second magnetization fields that respectively record first and second magnetization patterns to the recording medium. In some embodiments, the writing element is de-saturated between... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20110019301 - Systems and methods for high order assymetry correction: Various embodiments of the present invention provide systems and methods for signal offset cancellation. For example, a method for error cancellation is disclosed. The method includes: receiving an input signal that includes a second order error component; applying a transfer function to the processed input to reduce the second order... Agent: Hamilton,desanctis & Cha (lsi)

20110019303 - Fluid dynamic bearing apparatus, spindle motor, and disk drive apparatus: In a spindle motor, a capillary seal portion having a radial dimension that decreases in an axially downward direction, and a labyrinth seal portion arranged above the capillary seal portion are defined between an outer circumferential surface of a rotating member and an inner circumferential surface of a tubular portion.... Agent: Nidec Corporation C/o Keating & Bennett, LLP

20110019304 - Tape cartridge auxiliary memeory based library: A data storage library is described including a plurality of tape cartridges wherein each of the tape cartridges possesses an auxiliary radio frequency memory device in which auxiliary digital data is stored. The library also includes at least one drive disposed substantially within the library capable of transferring user data... Agent: Spectra Logic Corporation

20110019306 - Magnetic disk apparatus: According to one embodiment, there is provided a magnetic disk apparatus having a magnetic disk having magnetic dot lines each including magnetic dots arrayed at equal intervals in a down track direction, and a read/write head which uses a plurality of adjacent magnetic dot lines as one track and sequentially... Agent: Pillsbury Winthrop Shaw Pittman, LLP

20110019305 - Magnetic storage device: A magnetic storage device comprises a magnetic recording medium; a writing/reading element for storing information on the magnetic recording medium by generating a write field in order to switch regions within the magnetic recording medium in accordance with the information to be stored and reading stored information from the magnetic... Agent: Ladas & Parry LLP

20110019307 - Method for producing magnetic recording medium, magnetic recording medium and magnetic recording/reproducing apparatus: A method for producing a magnetic recording medium comprising at least a recording layer and a protective film provided on top of a non-magnetic substrate, the method comprising, in the following order, forming a continuous recording layer on the substrate, forming a patterned resist layer, partially removing the recording layer... Agent: Sughrue Mion, PLLC

20110019308 - Perpendicular magnetic recording medium, method of manufacturing perpendicular magnetic recording medium, and magnetic recording/reproducing apparatus: Disclosed is a perpendicular magnetic recording medium including: a nonmagnetic substrate; and a recording layer formed on the nonmagnetic substrate, the recording layer having magnetic anisotropy in a direction perpendicular to a surface of the nonmagnetic substrate and including a plurality of recording portions and a plurality of separation regions... Agent: Sughrue Mion, PLLC

20110019309 - Magnetic head having a stepped or segmented wrap around shield and methods of formation thereof: According to one embodiment, a system comprises a magnetic pole having a media-facing end and a wrap around shield spaced from the magnetic pole, wherein the wrap around shield has a media-facing end positioned along three sides of the media-facing end of the magnetic pole and has inner, second, and... Agent: Zilka-kotab, PC- Hit

20110019310 - Head gimbal assembly, suspension for the head gimbal assembly, and disk drive unit with the same: A HGA comprises a slider and a suspension with a flexure having a tongue region for supporting the slider. A read/write transducer and a piezoelectric element are formed oppositely. The connecting points of the curve beams and the inner tongue of the tongue region are in mirror positions to a... Agent: Nixon & Vanderhye, PC

20110019311 - Top bond design for performance enhancement: An assembly includes a slider having an air bearing surface and a slider mounting surface opposite the air bearing surface. The slider mounting surface includes first, second, third, and fourth slider pads. A first slider trace electrically shorts the first slider pad with the third slider pad. A second slider... Agent: Kinney & Lange, P.A.

20110019312 - Magneto-resistance effect element, magneto-resistance effect head, magnetic storage and magnetic memory: A magneto-resistance effect element, a magneto-resistance effect head, a magnetic storage and a magnetic memory, in which noise caused by a spin-transfer torque is reduced, are provided. In a fixed magnetization layer or a free magnetization layer of a magneto-resistance effect element including the fixed magnetization layer, a spacer layer... Agent: Nixon & Vanderhye, PC

20110019313 - Self-aligned double flux guided tmr sensor: A magnetic head according to one embodiment includes an array of sensor structures formed on a common substrate. Each sensor structure further comprises: a magnetic tunnel junction sensor spaced from a media-facing surface of the head; and a flux guide between the media-facing surface of the head and the sensor,... Agent: Zilka-kotab, PC- Hit

20110019314 - Magnetoresistive device with enhanced pinned layer: A magnetoresistive device includes a free layer, a separating layer, a pinned layer, and a magnetic stabilizer in close proximity to the pinned layer, wherein the magnetic stabilizer may enhance the stability of the magnetization direction of the pinned layer.... Agent: Kinney & Lange, P.A.

  
01/20/2011 > patent applications in patent subcategories. recently filed with US Patent Office

20110013303 - Magnetic transfer device and magnetic transfer method: A magnetic transfer device and method are provided. A magnetic field generating structure comprises a pair of permanent magnets connected to a return yoke. Respective magnetic poles of the magnets, of a different polarity from one another, oppose each other with a conjoined body disposed therebetween. The magnetic field generating... Agent: Rabin & Berdo, PC

20110013304 - Signal reproducing method, magnetic head and magnetic recording and reproducing apparatus: A magnetic head, includes a magnetic oscillation element, the oscillation frequency of which is modulated by a medium magnetic field, and a reproducing device configured to detect a phase difference between the adjacent oscillation signals derived from the magnetic oscillation element and output a phase difference signal as a reproduced... Agent: Ohlandt, Greeley, Ruggiero & Perle, LLP

20110013305 - Proximity detection method for magnetic head and recording medium: Touchdown between a read/write head of disk drive and a recording medium is detected based on the variance in the frequency domain of position error signals (PES), each of which is measured after incrementally positioning the read/write head closer to the recording medium, from a baseline PES. The synchronous portion... Agent: Patterson & Sheridan, L.L.P.

20110013306 - Apparatus, signal-processing circuit and device for magnetic recording system: To effectively suppress a signal in a low frequency region in which the medium noise and the signal distortion are concentrated, and in order to effectively utilize a detected component of the reproduced signal in the low frequency region, a target of partial response equalization to the perpendicularly recorded/reproduced signal... Agent: Juan Carlos A. Marquez C/o Stites & Harbison PLLC

20110013307 - Method and apparatus to identify a data band encoded between two servo bands in a sequential information storage medium: A method and apparatus is presented to determine a lateral position of a read/write head relative to a sequential information storage medium having a servo signal encoded therein and moving adjacent to the read/write head, where the servo signal comprises a plurality of pulses. The method includes detecting the servo... Agent: Dale F. Regelman Quarles & Brady, LLP

20110013308 - Recording head with current controlled gamma ratio: A data recording component includes a read transducer and a write transducer. A thermoelectric device generates heat flow between the read transducer and the write transducer. The heat flow is conducted by thermal conductors. A controlled current source provides current to the thermoelectric device that changes polarity to change directions... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20110013309 - Contact type thin film magnetic head with heaters for distance control: A contact type thin film magnetic head and method of using the same are provided. The contact type thin film magnetic head comprises a head element that is provided on a disk-facing surface of a slider, a magnetic disk, and heating elements disposed in a plane position different from that... Agent: Brinks Hofer Gilson & Lione

20110013311 - Magnetic recording medium, method for producing magnetic recording medium , and magnetic recording/ reproducing apparatus: A magnetic recording medium comprising a magnetic layer having a magnetic recording pattern comprising elevations constituting magnetic recording regions and depressions constituting boundary regions for partitioning the magnetic recording regions, and a continuous protective carbon overcoat on the magnetic layer, characterized in that portions of the carbon overcoat located on... Agent: Sughrue Mion, PLLC

20110013310 - Recording medium driving device and magnetic recording medium, and method for controlling flying height of head element: According to one embodiment, a recording medium driving device includes: a recording medium including a plurality of groove regions and land regions, wherein each of the groove regions is formed in a groove formed on top surface of the recording medium and having an arrangement of a magnetic domain formed... Agent: Knobbe Martens Olson & Bear LLP

20110013312 - Method and apparatus to position a head module comprising servo elements and a plurality of data elements: A method to position a head module, where the head module comprises at least one servo element and a plurality of data elements, where the servo element and each of the plurality of data elements can detect a servo signal, wherein the method includes moving a sequential information storage medium... Agent: Dale F. Regelman Quarles & Brady, LLP

20110013313 - Method and apparatus to set a wrap angle of a read/write head: A method is presented for setting a wrap angle of a read/write head having a servo element and multiple read elements, where the servo element and the read elements can detect a servo signal. The method includes moving a sequential information storage medium having a longitudinal axis and a servo... Agent: Dale F. Regelman Quarles & Brady, LLP

20110013314 - Housing apparatus, housing method, and library apparatus: A housing apparatus includes a plurality of housing units to have housed objects housed therein, a carrying unit to include the plurality of the housing units arranged in a ring shape, the carrying unit carrying the housing units to a carriage position, and a transferring unit to be disposed facing... Agent: Fujitsu Patent Center Fujitsu Management Services Of America, Inc.

20110013315 - Ribbed base deck to accentuate particle filtration: Base decks for data storage systems include a spindle motor region, a medium support region, an enclosure sidewall, and a recessed channel. The spindle motor region is configured to support a spindle motor assembly. The medium support region is beneath a storage medium when the storage medium is positioned within... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20110013316 - Recording head heater systems with two electrical connections: Recording heads for a data storage system include a first diode, a second diode, and a first electrical component. The first electrical component is electrically connected in series to the first and second diodes. In another embodiment, recording heads include first, second, third, and fourth electrical connection points. A read... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20110013317 - Method and system for fabricating magnetic transducers with improved pinning: A method and system for providing a magnetic transducer are disclosed. The method and system include providing a magnetic element that includes a free layer, a pinned layer, and a nonmagnetic spacer layer between the free layer and the pinned layer. The nonmagnetic spacer layer is a tunneling barrier layer.... Agent: Western Digital Corporation Attn: Lesley Ning /IPLaw Department

20110013319 - Disk drive with micro-actuator interconnect conditioning: A disk drive configured with micro-actuator interconnect conditioning. The disk drive includes a disk, a head, an actuator, a piezoelectric element, a hardened conductive adhesive, a voltage-supply circuit, and a controller. The head is configured to access the disk. The actuator includes a suspension supporting the head, and an arm... Agent: Hitachi C/o Wagner Blecher LLP

20110013318 - Head suspension and method of manufacturing head suspension: A head suspension 11 includes a load beam 17 having a base plate 13, a hinge part 15 resiliently supported by the base plate, and a rigid part 14 joined with the hinge part, a reinforcing plate 25 joined with the rigid part at a portion proximal to the hinge... Agent: Jordan And Hamburg LLP

20110013320 - Hard disk drive having slider limiter: A hard disk drive (HDD) including a slider limiter. The HDD includes a spindle motor installed to a base member; at least one disk mounted to the spindle motor to be rotated by the spindle motor; an actuator moving a read/write head to a desired position on the at least... Agent: Stanzione & Kim, LLP

20110013321 - Enhanced hard bias in thin film magnetoresistive sensors with perpendicular easy axis growth of hard bias and strong shield-hard bias coupling: A hard bias (HB) structure for longitudinally biasing a free layer in a MR sensor is disclosed that is based on HB easy axis growth perpendicular to an underlying seed layer which is formed above a substrate and along two sidewalls of the sensor. In one embodiment, a conformal soft... Agent: Saile Ackerman LLC

  
01/13/2011 > patent applications in patent subcategories. recently filed with US Patent Office

20110007413 - Control method and apparatus for a dual-channel weighted lpos combining scheme: A method for monitoring a plurality of servo channels, providing a finite state machine (“FSM”) comprising a single servo channel mode and a combined servo channel mode, and moving a sequential information storage medium comprising a plurality of servo bands across a read/write head comprising a corresponding plurality of servo... Agent: Dale F. Regelman Quarles & Brady, LLP

20110007414 - Magnetic recording medium, method of manufacturing magnetic recording medium, and magnetic recording/reproducing apparatus: Disclosed is a method of manufacturing a magnetic recording medium capable of effectively and reliably removing foreign materials on the surface of a magnetic recording medium, preventing a mask layer from remaining on the surface of the magnetic recording medium, and forming the pattern of a magnetic layer with high... Agent: Sughrue Mion, PLLC

20110007415 - Method and apparatus for detecting sync data of read data in a disk drive: According to one embodiment, a disk drive is provided, which starts reading data at the head thereof, when a sync mark is detected. The disk drive has a read channel that generates a forced SM detection signal if the sync mark cannot be detected because of the occurrence of TA.... Agent: Knobbe Martens Olson & Bear LLP

20110007416 - Disk drive and method for measuring clearance between a head and a disk in a disk drive: A disk drive. The disk drive includes a disk, a head, a head-slider, a moving mechanism, and a controller. The head is configured to access the disk. The head-slider includes the head, and is configured to fly in proximity to a recording surface of the disk. The moving mechanism is... Agent: Hitachi C/o Wagner Blecher LLP

20110007417 - Thin film perpendicular magentic recording head, their fabrication process and magentic disk drive using it: Thin film perpendicular magnetic head with a narrow main pole capable of a high recording density in excess of 100 gigabits per square inch and generating a high magnetic recording field, while also being modified to suppress remanent magnetic fields occurring immediately after writing operation. A return path is provided... Agent: Antonelli, Terry, Stout & Kraus, LLP

20110007418 - Combining information from parallel servo channels: A weighted combining scheme exploits information from two servo channels operating in parallel. A timing-based servo module comprises two synchronous servo channels coupled respectively to receive two digital servo signals read from a data tape. Both channels have outputs for an unweighted parameter estimate and for a measure of the... Agent: Law Firm Of Dan Shifrin

20110007419 - Disk drive: According to one embodiment, a disk drive includes a housing, a drive unit configured to drive a disk recording medium in the housing, and a head actuator configured to support a head. A wall portion of the housing includes a first rib formed into a circular arc having a first... Agent: Knobbe Martens Olson & Bear LLP

20110007420 - Magnetoresistive effect element in cpp-type structure and magnetic disk device: An MR element in a CPP structure includes a spacer layer made of Cu, a magnetic pinned layer containing CoFe and a free layer containing CoFe that are laminated to sandwich the spacer layer. The free layer is located below the magnetic pinned layer. The free layer is oriented in... Agent: Posz Law Group, PLC

20110007421 - Magnetoresistive effect element in cpp-type structure and magnetic disk device: An MR element in a CPP-GMR structure includes a first ferromagnetic layer, a spacer layer that is epitaxially formed on the first ferromagnetic layer, a second ferromagnetic layer that is located on the spacer layer, and that is laminated with the first ferromagnetic layer to sandwich the spacer layer. A... Agent: Posz Law Group, PLC

20110007422 - Protected transducer for dead layer reduction: A transducer includes magnetic material formed on a substrate that is shaped to include a trailing edge, a leading edge and a pair of opposing sidewalls extending between the trailing edge and the leading edge. A layer of protective material is positioned in contact with each of the pair of... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20110007423 - Supplemental layer to reduce damage from recording head to recording media contact: Recording heads for data storage systems are provided. Recording heads include a substrate layer made of a first material. The substrate layer has a bearing surface side. A tapered feature made of a second material is included on the bearing surface side. The first material is illustratively a multiphase material... Agent: Seagate Technology LLC C/o Westman, Champlin & Kelly, P.A.

20110007424 - Magnetic head slider locking apparatus: The magnetic head slider locking apparatus includes a fixed portion having a distal-side engage portion with which a distal end of the slider is engaged and being fixed to a flexure part, an endless spring portion surrounding the fixed portion in a plan view, a connection portion connecting the fixed... Agent: Sterne, Kessler, Goldstein & Fox P.l.l.c.

20110007425 - Magnetic sensor with composite magnetic shield: A magneto-resistive reader includes a first magnetic shield element, a second magnetic shield element and a magneto-resistive sensor stack separating the first magnetic shield element from the second magnetic shield element. The first shield element includes two ferromagnetic anisotropic layers separated by a grain growth suppression layer.... Agent: Campbell Nelson Whipps, LLC

20110007426 - Trapezoidal back bias and trilayer reader geometry to enhance device performance: A magnetoresistive sensor having a trilayer sensor stack with two ferromagnetic freelayers separated by a nonmagnetic spacer layer is disclosed. The sensor is biased with a back biasing magnet adjacent a back of the trilayer sensor. The back biasing magnet, the trilayer sensor stack, or both have substantially trapezoidal shapes... Agent: Kinney & Lange, P.A.

20110007429 - Magnetic sensor with perpendicular anisotrophy free layer and side shields: A tunneling magneto-resistive reader includes a sensor stack separating a top magnetic shield from a bottom magnetic shield. The sensor stack includes a reference magnetic element having a reference magnetization orientation direction and a free magnetic element having a free magnetization orientation direction substantially perpendicular to the reference magnetization orientation... Agent: Campbell Nelson Whipps, LLC

20110007427 - Magnetoresistive sensor with synthetic antiferromagnetic cap or seed layers: A magnetic sensor assembly including first and second shields, and a sensor stack between the first and second shields. The sensor stack includes a seed layer adjacent the first shield, a cap layer adjacent the second shield, and a magnetic sensor between the seed layer and the cap layer, wherein... Agent: Fellers, Snider, Blankenship, Bailey & Tippens, PC (seagate Technology LLC)

20110007428 - Write pole with a synthesized low magnetization shield: A magnetic writer comprises a surface, a write pole, a trailing shield and a gap. The write pole has a write pole tip proximate the surface. The trailing shield is proximate the surface and space away from the write pole. The gap is proximate the surface and located between the... Agent: Kinney & Lange, P.A.

20110007431 - Spin torque oscillator sensor enhanced by magnetic anisotropy: A spin torque oscillator device having a magnetic free layer with a magnetic anisotropy that has a component that is oriented perpendicular to a direction of an applied magnetic field. The spin torque oscillator device includes a magnetic reference layer, a magnetic free layer and a non-magnetic layer sandwiched there-between.... Agent: Zilka-kotab, PC- Hit

20110007430 - Static magnetic field assisted resistive sense element: Apparatus and associated method for writing data to a non-volatile memory cell, such as spin-torque transfer random access memory (STRAM). In accordance with some embodiments, a resistive sense element (RSE) has a heat assist region, magnetic tunneling junction (MTJ), and pinned region. When a first logical state is written to... Agent: Fellers, Snider, Blankenship, Bailey & Tippens, PC (seagate Technology LLC)

  
01/06/2011 > patent applications in patent subcategories. recently filed with US Patent Office

20110002059 - Magnetic transfer method and magnetic recording medium: A magnetic transfer method includes a conjoined body formation step of stacking a transfer master storing transfer information on a transfer receiving body. Air between contact surfaces of the transfer master and transfer receiving body is pushed out in the direction of a non-pressurized area by pressurizing the stacked transfer... Agent: Rabin & Berdo, PC

20110002061 - Circuit and method for detecting the phase of a servo signal: A detector recovers servo data from a servo signal generated by a read-write head, and determines the head-connection polarity from the recovered servo data. Such a detector allows a servo circuit to compensate for a reversed-connected read-write head, and thus allows a manufacturer to forego time-consuming and costly testing to... Agent: Stmicroelectronics, Inc.

20110002060 - Deterioration detection method of composite magnetic head and magnetic disk inspection apparatus: An object of the present invention is to provide a deterioration detection method of a head and a magnetic disk inspection apparatus in which the number of times of exchanging the head due to deterioration is decreased to improve the throughput of an inspection. In the present invention, a resistance... Agent: Brundidge & Stanger, P.C.

20110002062 - Analog multiplexer circuits and methods: A sample and hold circuit is disclosed that provides longer hold times. An analog multiplexer circuit is also disclosed that exhibits low switch leakage. The analog multiplexer circuit comprises a shared node, a plurality of input circuits, a control input for selecting one or more of the plurality of input... Agent: Ryan, Mason & Lewis, LLP

20110002063 - Perpendicular magnetic recording head and magnetic recording device suitable for high-density magnetic recording: According to one embodiment, a perpendicular magnetic recording head includes a main magnetic pole having a trailing side and two lateral sides, a magnetic shield near the trailing side and both lateral sides of the main magnetic pole, the magnetic shield comprising: a first soft magnetic film with a relatively... Agent: Zilka-kotab, PC- Hit

20110002064 - Perpendicular magnetic recording medium (pmrm) and magnetic storage device using the same: According to one embodiment, a PMRM includes a substrate, a soft magnetic underlayer above the substrate, an underlayer above the soft magnetic underlayer, an oxide-containing magnetic layer above the underlayer, and a ferromagnetic layer above the magnetic layer having no oxides. The underlayer controls orientation and segregation of the magnetic... Agent: Zilka-kotab, PC- Hit

20110002065 - Recording heads with embedded tape guides and magnetic media made by such recording heads: The present disclosure relates to apparatus and methods for recording heads with tape guides, including embedded tape guides. In one embodiment a magnetic recording head includes a contour modified to include a tape guide. The tape guide may include compliant or non-compliant edge guides. In another embodiment, a magnetic recording... Agent: Dorsey & Whitney LLP Intellectual Property Department

20110002066 - Actuator arm and disk recording device: According to one embodiment, an actuator arm includes a joint, an extension, a pair of outer surfaces, and a linear protrusion. The joint is rotatably supported on a shaft. The extension extends from the joint and has a tip end connected to a head that performs at least reading or... Agent: Knobbe Martens Olson & Bear LLP

20110002067 - Single-sided storage media: In one embodiment, a method can include providing first and second intermediate structures, each having first and second surfaces. Also, the method can include placing the first surface of the first intermediate structure adjacent to the first surface of the second intermediate structure, such that the first and second intermediate... Agent: Seagate Technology LLC C/o Murabito Hao & Barnes LLP

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