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| Number | Title | Issue Date |
| 8185685 | NAND flash module replacement for DRAM module An electronic memory module according to the invention provides non-volatile memory that can be used in place of a DRAM module without battery backup. An embodiment of the invention includes an embedded microprocessor with microcode that translates the FB-DIMM addre... | 05/22/2012 |
| 8184507 | Slider with integrated thermally-assisted recording (TAR) head and long laser diode with optical body for directing laser radiation A thermally-assisted recording (TAR) slider has an integrated TAR head and an integrated long laser diode, like an external-cavity VCSEL. The TAR head is integrated with the slider at the trailing end and includes an optical waveguide having a grating coupler orient... | 05/22/2012 |
| 8179635 | Single pole tip write head design for perpendicular recording media having reduced dependence on soft underlayers A thin film, perpendicular write head for use with recording media with or without a soft under layer is disclosed. The present invention comprises an tapered auxiliary pole, situated below the main write pole and separated from the write pole by a lower non-magneti... | 05/15/2012 |
| 8179634 | Perpendicular magnetic recording writer main pole having imbedded non-magnetic core and de-coupled pole tip Methods and structures for the fabrication of a thin film, perpendicular recording write head are disclosed. The structure provides a pole tip separated from a rear pole by a non-magnetic separation layer located adjacent the flare point. The rear pole contains an i... | 05/15/2012 |
| 8179633 | Perpendicular magnetic recording system and write head with transverse auxiliary pole for fast switching of write pole magnetization A perpendicular magnetic recording system has a write head having a main coil (the write coil) and main pole (the write pole) that directs write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and a transverse auxiliary pol... | 05/15/2012 |
| 8178158 | Method for making a current-perpendicular-to-the-plane giant magnetoresistance (CPP-GMR) sensor with a confined-current-path (CCP) A method of making a current-perpendicular-to-the-plane giant magnetoresistive (CPP-GMR) sensor with a confined-current-path (CCP) layer uses an array of self-assembled ferritin protein molecules with inorganic cores to make the CCP layer in the sensor stack. In one... | 05/15/2012 |
| 8174799 | Differential magnetoresistive magnetic head Embodiments of the present invention help to provide a single element type differential magnetoresistive magnetic head capable of achieving high resolution and high manufacturing stability. According to one embodiment, a magnetoresistive layered film is formed by st... | 05/08/2012 |
| 8174782 | Methods for depositing lubricant onto disks and systems thereof A system in one embodiment includes a disk; a reservoir having a selectively openable cover; a lubricant in the reservoir; and a sensor for detecting an event or condition that triggers opening of the cover. A method in another embodiment includes determining that a... | 05/08/2012 |
| 8169881 | Thermally assisted recording head having recessed waveguide with near field transducer and methods of making same According to one embodiment, an apparatus includes a near field transducer comprising a conductive metal film having a main body and a ridge extending from the main body and an optical waveguide for illumination of the near field transducer, a light guiding core lay... | 05/01/2012 |
| 8169753 | Current-perpendicular-to-plane (CPP) read sensor with ferromagnetic amorphous buffer and polycrystalline seed layers A current-perpendicular-to-plane (CPP) tunneling magnetoresistance (TMR) or giant magnetoresistance (GMR) read sensor with ferromagnetic amorphous buffer and polycrystalline seed layers is disclosed for reducing a read gap, in order to perform magnetic recording at ... | 05/01/2012 |
| 8169751 | Magnetoresistive sensor having a structure for activating and deactivating electrostatic discharge prevention circuitry A structure for preventing Electrostatic Discharge (LSD) damage to a magnetoresistive sensor during manufacture. The structure includes a switching element that can be switched off during testing of the sensor and then switched back on to provide ESD shunting to the... | 05/01/2012 |
| 8169729 | Magnetic recording/reproducing using a patterned medium To synchronize a write/read frequency with media with high precision even when a write head is positioned in a different zone in a magnetic recording/reproducing device equipped with patterned media formed with writing hit patterns and having a zoned format function... | 05/01/2012 |
| 8169728 | Magnetic medium having an artificial pattern structure using a gradient of a magnetization reversal field and a method of use thereof To avoid the occurrence of a recording error by suppressing the influence that a magneto-static interaction acting between the pattern dots exerts on a recording process and expand a margin for recording synchronization timing lag or tracking misregistration on the ... | 05/01/2012 |
| 8168311 | Magnetic recording disk having pre-patterned surface features and planarized surface A magnetic recording disk with pre-patterned surface features of elevated lands and recessed grooves or trenches, like a discrete-track media (DTM) or bit-patterned media (BPM) disk, has a planarized surface. A multilayered disk overcoat is used to protect the recor... | 05/01/2012 |
| 8168310 | Perpendicular magnetic recording media with oxide-containing exchange coupling layer A magnetic storage medium according to one embodiment includes a substrate; a first oxide magnetic layer formed above the substrate; a second oxide magnetic layer formed above the first oxide magnetic layer; an exchange coupling layer formed above the second oxide m... | 05/01/2012 |
| 8168309 | Perpendicular recording media with sublayers of oxide dopant magnetic materials Perpendicular recording media with sublayers of dual oxide dopant magnetic materials are disclosed. The magnetic layer may comprise multiple sublayers of magnetic materials. In each sublayer, dual oxide dopants are incorporated. The compositions of the sublayers can... | 05/01/2012 |
| 8166633 | Method for manufacturing an extraordinary magnetoresistive (EMR) device with novel lead structure A method for manufacturing an extraordinary magnetoresistive sensor (EMR sensor) having reduced size and increased resolution is described. The sensor includes a plurality of electrically conductive leads contacting a magnetically active layer and also includes an e... | 05/01/2012 |
| 8164987 | Thermally assisted magnetic head A magnetic write head arranged to maximize efficiency of an optical device used to locally heat a magnetic medium during use, also to maximize efficiency of a heater element for thermal fly height control. The magnetic head is constructed with a read head, a write h... | 04/24/2012 |
| 8164863 | Current-perpendicular-to-plane (CPP) read sensor with multiple ferromagnetic sense layers The invention provides a current-perpendicular-to-plane (CPP) tunneling magnetoresistance (TMR) or giant magnetoresistance (GMR) read sensor with multiple ferromagnetic sense layers. In one embodiment of the invention, a CPP TMR read sensor comprises a first sense l... | 04/24/2012 |
| 8164861 | Spin torque oscillator sensor employing antiparallel coupled oscilation layers A spin torque magnetoresistive sensor having a very small gap thickness. The sensor operates by measuring the change in frequency of a spin torque induced magnetic oscillation in magnetic layers of the sensor to detect the presence of a magnetic field. The sensor in... | 04/24/2012 |
| 8164860 | Servo write robust and good altitude performance ABS A head slider for a disk drive storage device. In general, the head slider should fly at the target height above the disk without crashing onto the hard disk. The head slider has an outside flange that encloses a plateau and an inside flange that encloses a plateau.... | 04/24/2012 |
| 8163405 | System, method and apparatus for multiple anisotropy layered magnetic structures for controlling reversal mechanism and tightening of switching field distribution in bit patterned media Multiple anisotropy layered magnetic structures for controlling reversal mechanism and tightening of switching field distribution in bit patterned media are disclosed. The invention extends the exchange spring concept to more variable and sophisticated structures. T... | 04/24/2012 |
| 8161627 | Method of making a write head lapping guide about aligned to a non-magnetic layer surrounding a write pole A method in one embodiment includes forming an electric lapping guide layer; forming a write pole; forming a first gap layer over the write pole; masking a portion of the first gap layer for defining a window over the write pole and at least a portion of the electri... | 04/24/2012 |
| 8154829 | Tunneling magnetoresistive (TMR) device with improved ferromagnetic underlayer for MgO tunneling barrier layer A tunneling magnetoresistance (TMR) device, like a TMR read head for a magnetic recording hard disk drive, has a magnesium oxide (MgO) tunneling barrier layer and a ferromagnetic underlayer beneath and in direct contact with the MgO tunneling barrier layer. The ferr... | 04/10/2012 |
| 8154827 | Integrated lead suspension with multiple crossover coplanar connection of the electrically conductive traces An integrated lead suspension (ILS) or flexure has a connection scheme that allows for coplanar and interleaved conductive traces between read/write circuitry and a read/write head in a magnetic recording disk drive. At each end of the flexure there is an island of ... | 04/10/2012 |
| 8149541 | System for controlling contact location during TFC touchdown and methods thereof A system according to one embodiment includes a thin film stack having a magnetic transducer and a contact pad; and a heater in the thin film stack for inducing thermal protrusion of a media-facing side of the thin film stack, wherein the thin film stack is characte... | 04/03/2012 |
| 8144429 | Magnetic head slider with diffusion stop films each of which is disposed between the associated terminal portion and lead portion or between the associated lead portion and seed film Embodiments of the present invention help to reduce the resistance variation of the heater provided in order to adjust the flying height of the slider. According to one embodiment, a magnetic head slider has a magnetic read/write device and a heater formed on the tr... | 03/27/2012 |
| 8139448 | Slider with integrated thermally-assisted recording (TAR) head and vertical-cavity surface-emitting laser (VCSEL) with angled external cavity A thermally-assisted recording (TAR) slider has an integrated TAR head and an integrated external-cavity VCSEL. The TAR head is integrated with the slider at the trailing end and includes an optical waveguide having a grating coupler oriented in a plane generally pa... | 03/20/2012 |
| 8139321 | 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, antiferromagneti... | 03/20/2012 |
| 8139320 | Write head having independent side shield and trailing shield throat height A magnetic write head for perpendicular magnetic recording. The magnetic write head includes a write pole having a pole tip region and a flared region. The write pole also has a trailing, wrap-around magnetic shield that is separated from the sides of the write pole... | 03/20/2012 |
| 8137571 | Method for manufacturing perpendicular magnetic recording head Embodiments of the present invention help to provide a method for manufacturing a perpendicular magnetic recording head including a main magnetic pole having a width that does not generally vary. According to one embodiment, a magnetic film, a first inorganic mask f... | 03/20/2012 |
| 8137570 | Additive write pole process for wrap around shield A method for manufacturing a magnetic write head having a wrap around magnetic trailing shield and a very narrow track width. A magnetic write pole is formed by forming a mask over a magnetic write pole material and performing a first ion milling to define the write... | 03/20/2012 |
| 8136228 | Method for manufacturing a magnetic write head A method for manufacturing a magnetic write head that avoids the challenges associated with the formation of fence structures during write pole definition. A magnetic write pole material is deposited. A mask structure is deposited over the magnetic write pole materi... | 03/20/2012 |
| 8136227 | Method for making a magnetic head having a non-GMR shunt A magnetic head having non-GMR shunt for perpendicular recording and method for making magnetic head having non-GMR shunt for perpendicular recording is disclosed. A shunt is provided for shunting charge from a read sensor. The shunt is formed co-planar with the rea... | 03/20/2012 |
| 8136226 | Read sensors and methods of making same with back-edge milling and refilling Methods and apparatus provide a refill configuration adjacent a back-edge that defines a height of a magnetoresistive read sensor. Milling through layers of the sensor forms the back-edge and may be initially conducted at a first angle of incidence greater than a se... | 03/20/2012 |
| 8133530 | One magnetic sided media for low cost and low capacity applications One-sided magnetic media for a hard disk drive. Methods are implemented to create a magnetic media with only one surface capable of recording data. The second surface is a non-data recording side of the media and is constructed so that it does not interfere with the... | 03/13/2012 |
| 8130474 | CPP-TMR sensor with non-orthogonal free and reference layer magnetization orientation A TMR sensor structure having free and reference layers, where the magnetic orientations of the free and reference layers are non-orthogonal. In one embodiment, a ferromagnetic free layer film has a bias-point magnetization nominally oriented in plane of the film th... | 03/06/2012 |
| 8129043 | System, method and apparatus for strain-assisted magnetic recording for controlling switching field and tightening switching field distribution in bit patterned media Multilayer magnetic structures control the switching field and tighten the switching field distribution in bit patterned media. A strain-inducing layer is excited, e.g., by a localized magnetic field or a localized thermal heating or a voltage, and induces a strain ... | 03/06/2012 |
| 8125742 | Fabrication of mesoscopic lorentz magnetoresistive structures A Lorentz Magnetoresistive sensor having an extremely small lead width and lead spacing is disclosed. The sensor can be constructed by a novel fabrication method that allows the leads to be deposited in such a manner that lead width and spacing between the leads is ... | 02/28/2012 |
| 8120874 | Perpendicular write head having a modified wrap-around shield to improve overwrite, adjacent track interference and magnetic core width dependence on skew angle A magnetic write head for perpendicular magnetic data recording. The write head includes an wrap around trailing shield structure for improved write field strength, reduced skew related adjacent track interference and magnetic core width. The trailing wrap around sh... | 02/21/2012 |
