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Dynamic magnetic information storage or retrieval October categorized by USPTO classification 10/11

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.
10/27/2011 > 10 patent applications in 6 patent subcategories. categorized by USPTO classification

20110261478 - Magnetoresistive element and magnetic recording apparatus: According to one embodiment, a magnetoresistive element includes a stack and a pair of electrodes that allows electric current to flow through the stack in a direction perpendicular to a surface of the stack. The stack includes a cap layer, a magnetization pinned layer, a magnetization free layer provided between... Agent: Kabushiki Kaisha Toshiba

20110261479 - Method of manufacturing magnetic recording medium, and magnetic recording/reproducing device: A method of manufacturing a magnetic recording medium is provided, which include: forming a magnetic layer on the surface of a nonmagnetic substrate; forming a groove in which a nonmagnetic section is formed by etching a portion corresponding to a formation region of the nonmagnetic section in the magnetic layer... Agent: Showa Denko K.k.

20110261480 - Reading data stored in recording medium: A device for reading data recorded on a recording medium having multiple tracks, the device including: a receiver that receives designations of a number of data elements to be read; and a determination unit that determines an order of reading the data elements so that, no matter on which track... Agent: International Business Machines Corporation

20110261481 - Magnetic structure for erasing disk or disks within hard disk drives: A structure for erasure of magnetic media in a hard drive includes a main field pole magnet polarized in a direction toward a drive spindle motor in the hard drive. At least two quadrature magnets are disposed adjacent the main field pole magnet and polarized in a direction toward the... Agent:

20110261482 - Information processing apparatus and head evacuation processing method therefor: An information processing apparatus includes a hard disk drive, an acceleration detection portion, and a controller. The hard disk drive has a protective function for moving a head from a recording area of a disk to an evacuation position. The acceleration detection portion is configured to detect, as a detection... Agent: Sony Corporation

20110261483 - Changing the composition and/or density of gases inside of assemblies during manufacturing: A method of changing a composition and/or a density of gases inside of a hard disk drive. The method includes placing at least one tube into contact with an interior of a hard disk drive, and exchanging gases through the at least one tube. The exchange of gases occurs essentially... Agent:

20110261484 - Reducing the obstruction of air flow through a bypass channel associated with a disk drive using an electrostatic pass-by filter: Embodiments of the present invention pertain to reducing the obstruction of air flow through a bypass channel associated with a disk drive. According to one embodiment, disk drive filtering system includes a selective filtering region, an electrostatic pass-by filter, and a filter free region. The selective filtering region is disposed... Agent:

20110261485 - Magnetic write head having a wrap around trailing shield with an asymetrical side gap: A magnetic write head having a magnetic write pole with a wrap around magnetic trailing shield. The wrap around magnetic trailing shield is separated by a first non-magnetic side gap at a first side of the write pole and by a second non-magnetic side gap at a second side of... Agent:

20110261486 - Perpendicular magnetic recording head with a bottom side shield: A perpendicular magnetic recording (PMR) head has a pole tip shielded laterally by a separated pair of bottom side shields and shielded from above by an upper shield. The bottom side shields surround a lower portion of the pole tip while the upper portion of the pole tip is surrounded... Agent: Headway Technologies, Inc.

20110261487 - Material for use in a tmr read gap without adversely affecting the tmr effect: Structures and methods for fabrication servo and data heads of tape modules are provided. The servo head may have two shield layers spaced apart by a plurality of gap layers and a sensor. Similarly, the data head may have two shield layers spaced apart by a plurality of gap layers... Agent:

10/20/2011 > 9 patent applications in 9 patent subcategories. categorized by USPTO classification

20110255189 - Method of detecting touchdown of magnetic head using timestamps, and magnetic disk drive to which the method is applied: According to one embodiment, a method of detecting contact of a magnetic head with a magnetic disk by changing the dynamic flying height of the magnetic head in a magnetic disk drive is disclosed. The method can detect a change in the rotational speed of the magnetic disk. The method... Agent: Kabushiki Kaisha Toshiba

20110255190 - Limiting disc deflection: A data storage apparatus and associated method is provided involving a data storage disc that is rotatable around a first axis. An actuator is rotatable around a second axis to operably position a data transfer member between an innermost radial location of the data storage disc and an outermost radial... Agent: Seagate Technology LLC

20110255191 - Disk drive device: A disk drive device includes a base member; a hub on which a recording disk is placed; a bearing unit arranged on the base member for rotatably supporting the hub; and a spindle drive unit for rotationally driving the hub, wherein the spindle drive unit includes a stator core having... Agent: Alphana Technology Co., Ltd.

20110255192 - Thin film magnetic tape head: A magnetic tape head includes a writing element having a coil for generating magnetic flux and a yoke part that emits magnetic flux induced by the coil from a tape bearing surface opposite a magnetic tape, a substrate where the writing element is formed, and a closure joined with the... Agent: Tdk Corporation

20110255193 - Magnetic recording medium and method of manufacturing the same: According to one embodiment, a magnetic recording medium includes a data region and a servo region adjacent to the data region and including a magnetic recording layer, the magnetic recording layer including first and second patterned regions adjacent to each other, the first patterned region including a first nonmagnetic matrix... Agent: Kabushiki Kaisha Toshiba

20110255194 - Elastic member structure of magnetic head: An improved elastic member structure of a magnetic head comprises: a base having a first and a second holder plates, a first through hole being formed on the first holder plate, and a gap being formed between the first and second holder plates; a fixing base plate being fixed onto... Agent: Castles Technology Co., Ltd.

20110255195 - Transducer head assemblies and modules: In one embodiment a transducer head assembly is disclosed having a head module. The head module comprises at least one media bearer element providing a media bearer surface, and a head element block having an array of head elements. The assembly further comprises a carrier structure to carry the head... Agent:

20110255196 - Pmr writer with graded side shield: A perpendicular magnetic recording (PMR) head is fabricated with a pole tip shielded laterally by a graded side shield that is conformal to the shape of the pole tip at an upper portion of the shield but not conformal to the pole tip at a lower portion. The shield includes... Agent: Headway Technologies, Inc.

20110255197 - Microwave oscillating element and thin film magnetic head therewith: A microwave oscillation element of the present invention includes a lamination main part in which an oscillating layer that is a magnetization free layer and that generates a high frequency electromagnetic field by an excitation of a spin wave, a nonmagnetic intermediate layer, a polarizer layer, and a reference layer... Agent: Tdk Corporation

10/13/2011 > 13 patent applications in 11 patent subcategories. categorized by USPTO classification

20110249354 - Disk storage apparatus and method for servo controlling: According to one embodiment, a disk storage apparatus includes a disk and a servo demodulator. The disk has a servo area, in which a first phase servo pattern, a second phase servo pattern that is in phase with the first servo pattern, and a third servo pattern that is inverse... Agent: Kabushiki Kaisha Toshiba

20110249355 - Method and system for error checking in bit-patterned media: A disc drive system provides increased reliability by detecting and correcting errors associated with bit-patterned media. Write synchronization errors associated with bit-patterned media are addressed by including data storage for temporarily storing data that is being written to the disc drive. The data is read from both the disc drive... Agent: Seagate Technology LLC

20110249356 - Disk storage apparatus and method for recording data: According to one embodiment, a disk storage apparatus includes a data recording module and a controller. The data recording module is configured to record a first sync mark and a second sync mark in each data sector provided on a disk. The controller is configured to control the data recording... Agent: Kabushiki Kaisha Toshiba

20110249357 - Method of protecting information written to recording medium, and disk drive and recording medium employing the method: A method of protecting information written to a recording medium includes magnetizing the recording medium to form a first magnetic pattern corresponding to information to be stored, and magnetizing the recording medium to form a protective magnetic pattern having a phase difference of 180° from the first magnetic pattern at... Agent: Samsung Electronics Co., Ltd

20110249358 - Apparatus and method of detecting a defective sector in a disk drive: A method and apparatus to detect a defective sector include features of determining a first error value by counting the number of error symbols in first data read from a sector by using a head in an on-track state, and reading second data from the sector by off-tracking the head... Agent: Samsung Electronics Co., Ltd

20110249361 - Fly-height control using asynchronous sampling: In one embodiment, a hard-disk drive system performs fly-height control using a read-back mode and a loop-back mode. The read-back mode measures first and second harmonics pre-recorded on the medium and divides the first measurement by the second to obtain a read-back mode harmonic ratio. The loop-back mode measures the... Agent: Lsi Corporation

20110249359 - Magnetic head having an asymmetrical shape and systems thereof: A magnetic head, according to one embodiment, includes a main magnetic pole having a protruding portion such that a distance from a first side of a trailing edge of the main magnetic pole to a leading edge of the main magnetic pole is different from a distance from a second... Agent:

20110249360 - Perpendicular magnetic recording head: According to one embodiment, a perpendicular magnetic recording head includes a main magnetic pole including a write magnetic pole layer for recording, the write magnetic pole layer comprising magnetic layers being antiferromagnetically coupled via a thin non-magnetic conductor layer between the magnetic layers, wherein the write magnetic pole layer for... Agent:

20110249362 - Spindle motor having connecting mechanism connecting lead wire and circuit board, and storage disk drive having the same: A spindle motor includes a base portion, a rotor hub, a stator, and a circuit board. The base portion preferably includes a through hole and is arranged to spread out radially around a central axis. The rotor hub is arranged above the base portion to rotate about the central axis.... Agent: Nidec Corporation

20110249363 - Magnetic head including sensor: A magnetic head disposed in a slider, that is arranged at an interval from a magnetic disk includes a sensor disposed in a position that is opposed to the magnetic disk, a heat conductive film that is positioned on an air bearing surface opposed to the magnetic disk, and that... Agent: Tdk Corporation

20110249364 - Pmr writer with seamless shields and method of making it: A process (and the structure resulting therefrom) is described for manufacturing a magnetic write head in which there is no physical interface between the first and second trailing shields. This is achieved by the introduction of a sacrificial layer immediately after the top yoke plating has been done and its... Agent: Headway Technologies, Inc.

20110249365 - Perpendicular magnetic recording write head with improved laminated main pole: A perpendicular magnetic recording write head has an improved antiferromagnetically-coupled laminated main pole (MP) formed on a substrate. The MP has two ferromagnetic multilayers, each comprising at least one FeCo/NiFe/FeCo ferromagnetic trilayer, antiferromagnetically coupled across an antiferromagnetically coupling (AFC) film consisting essentially of ruthenium (Ru). The MP has a NiFe... Agent: Hitachi Global Storage Technologies Netherlands B.v.

20110249366 - Magnetic head suspension and manufacturing method thereof: A flexure metal plate includes distal and proximal end side-center-support plate forming regions that are positioned on distal and proximal sides within an open section. To a distal end section of a supporting part that is positioned on a distal side of the open section, first and second-distal side-metal plates... Agent: Suncall Corporation

10/06/2011 > 19 patent applications in 14 patent subcategories. categorized by USPTO classification

20110242690 - Magnetic transfer method and magnetic transfer device: A system and method for magnetic transfer. A magnetic transfer device includes a plurality of pairs of magnetic field generating units that apply a magnetic field to a contact body which includes a master disk in close contact with a magnetic recording medium, wherein the master disk has a pattern... Agent: Fuji Electric Device Technology Co., Ltd.

20110242692 - Data-dependent noise-predictive maximum likelihood detection (dd-npml) for magnetic recording: In one embodiment, a method includes applying one or more whitening filters to an input stream of digitized samples from a magnetic data channel to produce a filtered sequence, performing one or more branch metric calculations to the filtered sequence to produce a branch metric, and applying a multi-state data-dependent... Agent: International Business Machines Corporation

20110242693 - Magnetic recording medium evaluation apparatus and evaluation method: This invention provides a magnetic recording medium evaluation apparatus and evaluation method which yield results having good correlation with error rate measurements even when comparing media with different structures. Signals from a function generator are recorded in a magnetic recording medium. The recording signals are also passed through a first... Agent: Fuji Electric Device Technology Co., Ltd.

20110242691 - Systems and methods for detecting head contact: Various embodiments of the present invention provide systems and methods for determining contact with a storage medium. As an example, a data storage system is disclosed that includes: a head assembly and a data processing circuit. The head includes a head disk interface sensor operable to provide a contact signal... Agent: Lsi Corporataion

20110242694 - Magnetic head and disk drive with same: According to one embodiment, a magnetic head for perpendicular recording includes a first magnetic core includes a main pole configured to produce a recording magnetic field, and a return pole configured to reflux magnetic flux from the main pole to form a magnetic circuit in conjunction with the main pole,... Agent: Kabushiki Kaisha Toshiba

20110242695 - Disk device and related write method: A method of performing a write operation in a disk device comprises storing multiple units of data in a first area of a buffer, wherein each of the units of data has a size that is different from a size of a corresponding target sector of a disk. The method... Agent: Samsung Electronics Co., Ltd.

20110242697 - Method for manufacturing thermally-assisted magnetic recording head with light source unit: Provided is a method for manufacturing a thermally-assisted magnetic recording head with “composite slider structure”. In the method, the waveguide is irradiated with a first light from opposed-to-medium surface side, and the passing first light is detected on back surface side to obtain an image of the light-receiving end surface,... Agent: Tdk Corporation

20110242696 - Microwave assisted magnetic head: A gap between a main pole and auxiliary pole composing a thin film magnetic head having a microwave assisted function of the present invention is filled with a nonmagnetic dielectric layer to embed a microwave radiator. The nonmagnetic dielectric layer has an inclined surface at a end on a side... Agent: Tdk Corporation

20110242698 - Barium ferrite magnetic storage media: Magnetic storage media that include a multilayer structure are described. In general, the magnetic storage media include a substrate, an underlayer that includes a plurality of underlayer particles formed over the substrate, and a magnetic layer that includes a plurality of magnetic particles formed over the underlayer. The magnetic layer... Agent: Imation Corp.

20110242699 - Hard disk control module, apparatuses having the same, and method of controlling unload standby time thereof: A hard disk control module includes a load/unload counter and a controller. The load/unload counter counts a number of loads/unloads of a head on/from a surface of a disk. The controller may determine the number of counted loads/unloads during a reference time. The controller controls an unload standby time of... Agent: Samsung Electronics Co., Ltd

20110242700 - Method of producing magnetic storage medium, magnetic storage medium and information storage device: The following abstract replace prior abstract in the application. It is an object to provide a simple and practical method capable of producing a magnetic storage medium of a type such as a bit-patterned type, a magnetic storage medium of the above-mentioned type and an information storage device which may... Agent: Ulvac, Inc.

20110242701 - Magnetic head and disk drive with the same: According to one embodiment, a magnetic head includes a main pole configured to apply a perpendicular recording magnetic field to a recording layer of a recording medium, a return pole opposed to the trailing side of the main pole with a write gap therebetween and configured to reflux magnetic flux... Agent: Kabushiki Kaisha Toshiba

20110242702 - Magnetic recording medium, method of manufacturing the same, and magnetic recording/reproduction apparatus: According to one embodiment, a perpendicular magnetic recording layer comprises a granular film type recording layer and a continuous film type recording layer. The granular film type recording layer comprises a first granular film type recording layer in which magnetic crystal grains in a film plane has an average crystal... Agent: Kabushiki Kaisha Toshiba

20110242703 - Thermally assisted magnetic head, method of manufacturing the same, head gimbal assembly, and hard disk drive: A thermally assisted magnetic head includes a main magnetic pole layer, a near-field light generating layer having a generating end part generating near-field light arranged within a medium-opposing surface, and an optical waveguide guiding light to the near-field light generating layer. The thermally assisted magnetic head includes a base layer... Agent: Sae Magnetics (h.k.) Ltd.

20110242704 - Disk drive flexure: A flexure is provided with a metal base of stainless steel, an insulating layer, and a pair of copper conductors. An opening region including an opening and a non-opening region without an opening are formed in a longitudinal part of the metal base. One of the conductors is provided with... Agent: Nhk Spring Co., Ltd.

20110242705 - Magnetic head, magnetic head assembly, and magnetic recording/reproducing apparatus: According to one embodiment, a magnetic head includes a reproducing section. The reproducing section includes a first magnetic shield, a second magnetic shield, a magnetoresistive effect film, and a third magnetic shield. The magnetoresistive effect film is provided between the first magnetic shield and the second magnetic shield and includes... Agent: Kabushiki Kaisha Toshiba

20110242706 - Magnetic recording medium: c

20110242707 - Hard disk drive: A hard disk drive includes a magnetic head to write data to a disk by magnetizing the disk using a leakage magnetic flux that leaks in a disk direction through a write gap provided between a write pole to apply a magnetic field to the disk and a shield provided... Agent: Samsung Electronics Co., Ltd

20110242708 - Electronic apparatus and disk drive suspension: A microactuator element as an example of an electrical component is disposed on a metallic, electrically conductive plate member. A conductive resin member is disposed on a current-carrying part of the conductive plate member and a conduction part of the microactuator element. A thin porous plating layer of thickness 100... Agent: Nhk Spring Co., Ltd.

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