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| Number | Title | Issue Date |
| 8105445 | Method and apparatus for fast and local anneal of anti-ferromagnetic (AF) exchange-biased magnetic stacks A method (and structure) of thermally treating a magnetic layer of a wafer, includes annealing, for a predetermined short duration, a magnetic layer of a single wafer. ... | 01/31/2012 |
| 7740714 | Method for preparing radially anisotropic magnet A radially anisotropic magnet is prepared by furnishing a cylindrical magnet-compacting mold comprising a die, a core, and top and bottom punches, packing a magnet powder in the mold cavity, applying a magnetic field across the magnet powder, and forcing the top and... | 06/22/2010 |
| 7686895 | Method of improving mechanical properties of gray iron A method of forming gray iron components includes applying a substantially uniform magnetic field to gray iron. The method also includes heat-treating the gray iron while the gray iron is within the magnetic field. ... | 03/30/2010 |
| 7651573 | Method of annealing amorphous ribbons and marker for electronic article surveillance A ferromagnetic resonator for use in a marker in a magnetomechanical electronic article surveillance system has improved magnetoresonant properties and/or reduced eddy current losses by virtue of being annealed so that the resonator has a fine domain structure with ... | 01/26/2010 |
| 7563331 | Method for producing nanocrystalline magnet cores, and device for carrying out said method The invention relates to a method and to a device for carrying out a manufacturing process in which all magnet cores to be produced are first continuously crystallized. Depending on whether the required hysteresis loops should be round, flat or rectangular, the magn... | 07/21/2009 |
| 7479193 | Preparation of positive magnetostrictive materials for use under tension A positive magnetostrictive material such as a ferromagnetic alloy is subjected to a magnetic field during annealing treatment while being heated for a predetermined period of time at an elevated temperature below its softening temperature followed by cooling result... | 01/20/2009 |
| 7441324 | Method for preventing magnetic damage to a GMR head during back-end processing A method is provided for preserving the transverse biasing of a GMR (or MR) read head during back-end processing. In a first preferred embodiment, the method comprises magnetizing the longitudinal biasing layers of the read head in a transverse direction, so that th... | 10/28/2008 |
| 7442263 | Magnetic amplifier choke (magamp choke) with a magnetic core, use of magnetic amplifiers and method for producing softmagnetic cores for magnetic amplifiers The invention relates to a transductor regulator with a magnetic core which is made up of a nanocrystalline alloy which is almost free of magnetorestriction. The core has as low cyclic magnetization losses as possible and as rectangular a hysterisis cycle as possibl... | 10/28/2008 |
| RE40348 | Arc segment magnet, ring magnet and method for producing such magnets A thin arc segment magnet made of a an R-T-B based, rare earth sintered magnet substantially comprising 28-33 weight % of R and 0.8-1.5 weight % of B, the balance being substantially Fe T, wherein R is at least one rare earth element including Y, and... | 06/03/2008 |
| 7362015 | Apparatus and method for making an electrical component This invention relates to a transformer and more particularly, to a system and method for making a transformer utilizing dynamic magnetic compaction. A coil is placed in a conductive container, and a conductive powder material, such as ferrite, is placed in the cont... | 04/22/2008 |
| 7358844 | Current transformer core and method for producing a current transformer core A current transformer core has a ratio of the core outside diameter Da to the core inside diameter Di of | 04/15/2008 |
| 7358716 | Measuring method and measuring arrangement for measuring currents with a large dynamic range A measuring method for measuring currents with a large dynamic range by means of a magnetic measuring module has the steps of switching into a high-current mode when a current threshold value is exceeded, and switching into a low-current mode otherwise, wherein the ... | 04/15/2008 |
| 7350559 | Systems and methods of electromagnetic influence on electroconducting continuum Thus, as shown by an exact electrodynamic computation of EMBF and the estimations described above of the velocity of turbulent flows arising due to their effect, application of amplitude- and frequency-modulated helically traveling (rotating and axially traveling) e... | 04/01/2008 |
| 7344653 | Method for producing and magnetising a bitumen film containing magnetic powder A bitumen film containing magnetic powder is heated prior to magnetization to a temperature enabling the magnetic powder particles to be oriented according to the effect of the magnetic field. The bitumen film is sufficiently cooled after magnetization in order to p... | 03/18/2008 |
| 7320169 | Self-pinned GMR structure by annealing In a conventional spin valve the shunt resistance of the pinning layer reduces the overall efficiency of the device. This problem has been overcome by using IrMn for the pinning layer at a thickness of about 20 Angstroms or less. For the IrMn to be fully effective i... | 01/22/2008 |
| 7289013 | Bulk amorphous metal inductive device A bulk amorphous metal inductive device includes a magnetic core having at least one low-loss bulk ferromagnetic amorphous metal magnetic component forming a magnetic circuit having an air therein. The component has a plurality of similarly shaped layers of amorphou... | 10/30/2007 |
| 7285152 | Method of manufacturing chain-structure metal powder A method of manufacturing the chain-structure metal powder comprises precipitating a metal powder by a reaction performed in an aqueous solution in which nickel ions, complex ions, and titanium ions containing trivalent titanium ions (Ti3+) and tetravalent titanium ... | 10/23/2007 |
| 7282103 | Iron-base amorphous alloy thin strip excellent in soft magnetic properties, iron core manufactured by using said thin strip, and mother alloy for producing rapidly cooled and solidified thin strip The present invention provides an iron-base amorphous alloy thin strip excellent in soft magnetic properties, an iron core manufactured by using said thin strip, and a mother alloy for producing a rapidly cooled and solidified thin strip. More specifically, the pres... | 10/16/2007 |
| 7276128 | Amorphous alloys for magneto-acoustic markers in electronic article surveillance having reduced, low or zero co-content and method of annealing the same A ferromagnetic resonator for use in a marker in a magnetomechanical electronic article surveillance system is manufactured at reduced cost by being continuously annealed with a tensile stress applied along the ribbon axis and by providing an amorphous magnetic allo... | 10/02/2007 |
| 7268991 | Electrical circuit protection system A system to protect electrical circuits from rapid changes of voltage associated with a fault in an electrical load comprises an inductor placed in series between a drive circuit and load. The inductor is designed to be inefficient or lossy when the inductor core is... | 09/11/2007 |
| 7265651 | Inductive component and method for the production thereof The invention relates to an inductive component (10) whose soft magnetic core (11) is produced by pouring a casting resin into a mold (1a) filled with a soft magnetic alloy powder and by subsequently hardening the casting resin with the a... | 09/04/2007 |
| 7262505 | Selective electroless-plated copper metallization Structures and methods are provided which include a selective electroless copper metallization. The present invention includes a novel methodology for forming copper vias on a substrate, including depositing a thin film seed layer of Palladium (Pd) or Copper (Cu) on... | 08/28/2007 |
| 7237320 | Methods of orienting an easy axis of a high-aspect ratio write head for improved writing efficiency A pole piece of a magnetic write head is formed over a substrate and includes a pole tip having a width that is less than its height which is normal the substrate. Due to stress-anisotropy, the pole tip structure has an inherent easy-axis which is oriented in an unf... | 07/03/2007 |
| 7235910 | Selective etching process for cutting amorphous metal shapes and components made thereof A selective etching process cuts shapes from amorphous metal strip feedstock. The etching process comprises depositing a chemically resistant material to one side of the strip in a pattern that defines the requisite shape, mating the metal strip with a carrier strip... | 06/26/2007 |
| 7232495 | Method of magnetizing rare-earth magnet and rare-earth magnet The method of the present invention includes a step of preparing a rare earth magnet 22 disposed for forming a cylinder 22a, a first magnetizing step of applying a first external magnetic field H1 to the rare earth magnet 22, there... | 06/19/2007 |
| 7207102 | Method for forming permanent magnets with different polarities for use in microelectromechanical devices Methods are provided for forming a plurality of permanent magnets with two different north-south magnetic pole alignments for use in microelectromechanical (MEM) devices. These methods are based on initially magnetizing the permanent magnets all in the same directio... | 04/24/2007 |
| 7209326 | Magnetoresistive head and manufacturing method thereof A magnetoresistive head in which a pinned layer comprises two films, i.e., a ferromagnetic film A and a ferromagnetic B anti-ferromagnetically coupled to each other and a anti-ferromagnetic coupling film for separating the two ferromagnetic films A and B, where the ... | 04/24/2007 |
| 7192491 | Increased damping of magnetization in magnetic materials In order to dampen magnetization changes in magnetic devices, such as magnetic tunnel junctions (MTJ) used in high speed Magnetic Random Access Memory (MRAM), a transition metal selected from the 4d transition metals and 5d transition met... | 03/20/2007 |
| 7179338 | Control of engineering processes using magnetostrictive alloy compositions Magnetostrictive devices and methods involving a magnetostrictive alloy having; (1) one or more of Pd, and Pt, and (2) one or more of Ni, Co, Fe, where the alloy comprises one or more of PdxNi1−x, PdxFe1−x, Pdx | 02/20/2007 |
| 7172123 | Combined data reader and electronic article surveillance (EAS) system An integrated data reader and electronic article surveillance (EAS) system, and methods of operation. In one configuration, a data reader such as a bar code scanner is equipped with an EAS deactivation module disposed behind the scanner surface preferably downstream... | 02/06/2007 |
| 7170414 | Systems and methods for optical reading and EAS tag sensing and deactivating at retail checkout Methods of operation of a data reader and security tag deactivation system whereby a data reader such as a barcode scanner is equipped with EAS deactivation coils or modules disposed in the vicinity of the read volume or generally proximate thereto and the system is... | 01/30/2007 |
| 7166320 | Post-deposition annealed recording media and method of manufacturing the same A novel technique for incorporating rapid thermal annealing into media sputter fabrication has facilitated the production of flyable media samples. Discs are fabricated with standard processing techniques to control physical grain size and crystallite texture. A CrM... | 01/23/2007 |
| 7166173 | Method of simultaneously initializing two antiferromagnetic layers in a magnetic sensor Magnetic tunnel junction (MTJ) and charge perpendicular-to-plane (CPP) magnetic sensors are disclosed which have a first antiferromagnetic layer for pinning the magnetization direction in a pinned layer and a second antiferromagnetic layer for providing bias stabili... | 01/23/2007 |
| 7161773 | High linear density tunnel junction flux guide read head with in-stack longitudinal bias stack (LBS) Several embodiments of a sense current perpendicular to the planes of the sensor (CPP) and flux guide type of read head has a gap between first and second shield layers at an air bearing surface (ABS) where the flux guide is located which is less than a gap between ... | 01/09/2007 |
| 7161124 | Thermal and high magnetic field treatment of materials and associated apparatus An apparatus and method for altering characteristics, such as can include structural, magnetic, electrical, optical or acoustical characteristics, of an electrically-conductive workpiece utilizes a magnetic field within which the workpiece is positionable and scheme... | 01/09/2007 |
| 7152305 | Method for fabricating a magnetoresistive (MR) read head A magnetoresistive (MR) read head is disclosed including a shield layer with a recessed portion and a protruding portion defined by the recessed portion. Also included is an MR sensor located in vertical alignment with the protruding portion of the shield layer. Fur... | 12/26/2006 |
| 7150092 | Method for manufacturing spin valve A method of manufacturing a spin-valve thin-film magnetic element is provided. The spin-valve thin-film magnetic element includes a free magnetic layer and laminates of pinned magnetic layers and antiferromagnetic layers formed on two surfaces of the free magnetic l... | 12/19/2006 |
| 7148598 | Spoke permanent magnet rotors for electrical machines and methods of manufacturing same A rotor assembly for an electric motor includes a spoke permanent magnet rotor and a shaft connected thereto. The spoke permanent magnet rotor has an axis of rotation, permanent magnet material, and ferro-magnetic material. The permanent magnet material extends outw... | 12/12/2006 |
| 7147731 | Flanged parts producing method, and heat-treating device and heat treating method therefor A spacer 44 is inserted between an upper end face 44a of a contact column 40, and a lower face of a flange 14. The flange 14 is supported at plural positions by supporting columns 42. In heating a shoulder portion ... | 12/12/2006 |
| 7144468 | Method of constructing a unitary amorphous metal component for an electric machine A unitary amorphous metal magnetic component for an axial flux electric machine such as a motor or generator is formed from a spirally wound annular cylinder of ferromagnetic amorphous metal strips. The cylinder is adhesively bonded and provided with a plurality of ... | 12/05/2006 |
