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11532results about "Inorganic material magnetism" patented technology
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Ferromagnetic powder for dust core
InactiveUS7498080B2Increase resistanceTotal current dropLiquid surface applicatorsInductances/transformers/magnets manufactureElectrical resistance and conductanceEddy current
Owner:HON HAI PRECISION IND CO LTD
Multifunctional polymer coated magnetic nanocomposite materials
A polymer coated nanoparticle containing a metallic core and a polymer shell encapsulating said metallic core is useful, for example, in magnetic tapes and supercapacitors.
Owner:THE ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIV OF ARIZONA
Surface modified particulate and sintered or injection molded products
ActiveUS20150080495A1Simple technologyWeaken energyConductive materialCeramic shaping apparatusParticulatesPolymer science
Disclosed are interfacially modified particulate and polymer composite material for use in injection molding processes, such as metal injection molding and additive process such as 3D printing. The composite material is uniquely adapted for powder metallurgy processes. Improved products are provided under process conditions through surface modified powders that are produced by extrusion, injection molding, additive processes such as 3D printing, Press and Sinter, or rapid prototyping.
Owner:TUNDRA COMPOSITES LLC
Mobile communication terminal
InactiveUS20070241971A1Easily and inexpensively integrationIncrease freedomAntenna supports/mountingsAntenna connectorsEngineeringAntenna element
An antenna element made of an electrically conductive material pattern is printed and formed on a face of a casing made of an electrically nonconductive material having a circuit board housed therein, and the antenna element and the circuit board are electrically connected to each other by a connecting element.
Owner:TOSHIBA CLIENT SOLUTIONS CO LTD
Electronic device and manufacturing method thereof
ActiveUS20100289609A1Improve breathabilityPrevent oxidationTransformers/inductances coils/windings/connectionsInorganic material magnetismMagnetic powderHardness
An electronic device including a magnetic body and a wire is provided. The magnetic body has a first magnetic powder and a second magnetic powder mixed with the first magnetic powder. The Vicker's Hardness of the first magnetic powder is greater than that of the second magnetic powder and the mean particle diameter of the first magnetic powder is greater than that of the second magnetic powder.
Owner:CYNTEC
Magnetic microspheres for use in fluorescence-based applications
ActiveUS20060159962A1Avoid light transmissionEmission reductionNanomagnetismMagnetic materialsMicrosphereFluorescence
Microspheres, populations of microspheres, and methods for forming microspheres are provided. One microsphere configured to exhibit fluorescent and magnetic properties includes a core microsphere and a magnetic material coupled to a surface of the core microsphere. About 50% or less of the surface of the core microsphere is covered by the magnetic material. The microsphere also includes a polymer layer surrounding the magnetic material and the core microsphere. One population of microspheres configured to exhibit fluorescent and magnetic properties includes two or more subsets of microspheres. The two or more subsets of microspheres are configured to exhibit different fluorescent and / or magnetic properties. Individual microspheres in the two or more subsets are configured as described above.
Owner:LUMINEX
Magnetically-responsive microspheres
InactiveUS6773812B2Easy to doNanomagnetismSynthetic resin layered productsMicrosphereMagnetite Nanoparticles
Microspheres are constructed using magnetic particles. Hybrid microspheres are constructed using fluorescent or luminescent microspheres and magnetic nanoparticles. Reactive moieties on the surface of the resultant particles can be used for attachment of biologically active molecules, thus allowing selective separations and analytical assays to be performed. Distinguishable subsets of microspheres can be constructed based on fluorescent intensities, and separations can be affected based on variable degree of magnetic content.
Owner:LUMINEX
Magnetic alloy material and method of making the magnetic alloy material
InactiveUS20060231163A1Short timeEasy to crushInorganic material magnetismRare-earth elementCrystal structure
A magnetic alloy material according to the present invention has a composition represented by Fe100-a-b-cREaAbCoc, where RE is a rare-earth element always including La, A is either Si or Al, 6 at %≦a≦11 at %, 8 at %≦b≦18 at %, and 0 at %≦c≦9 at %, and has either a two phase structure consisting essentially of an α-Fe phase and an (RE, Fe, A) phase including 30 at % to 90 at % of RE or a three phase structure consisting essentially of the α-Fe phase, the (RE, Fe, A) phase including 30 at % to 90 at % of RE and an RE(Fe, A)13 compound phase with an NaZn13-type crystal structure. The respective phases have an average minor-axis size of 40 nm to 2 μm.
Owner:HITACHI METALS LTD
Hexagonal barium ferrite magnetic particle and method of manufacturing the same, and magnetic recording medium
InactiveUS20120177951A1Inhibit drop in thermal stabilityEnsure easeMagnetic materials for record carriersInorganic material magnetismBiological activationMaterials science
An aspect of the present invention relates to a hexagonal barium ferrite magnetic particle, wherein, relative to 100 atom percent of a Fe content, an Al content ranges from 1.5 to 15 atom percent, a combined content of a divalent element and a pentavalent element ranges from 1.0 to 10 atom percent, an atomic ratio of a content of the divalent element to a content of the pentavalent element is greater than 2.0 but less than 4.0, and an activation volume ranges from 1,300 to 1,800 nm3.
Owner:FUJIFILM CORP
Iron nitride magnetic powder and magnetic recording medium comprising the same
InactiveUS20100035086A1Magnetic interactionIncreasing magnetic interactionRecord information storageInorganic material magnetismIron nitrideYttrium
A spherical or ellipsoidal iron nitride magnetic powder having a core comprising iron nitride including a Fe16N2 phase as a primary phase and an outer layer containing yttrium (Y) and aluminum (Al), in which an average particle size r of the iron nitride magnetic powder is 20 nm or less, an average diameter d of the core is 4 to 10 nm, and a ratio of r to d (r / d) is 2 to 3, and average content of yttrium and aluminum in the outer layer are from 0.9 to 5 atomic % and from 30 to 50 atomic %, respectively, each based on the total number of iron atoms in the iron nitride magnetic powder, and standard deviations of the contents of yttrium and aluminum are 0.6 atomic % or less and 17 atomic % or less, respectively.
Owner:HITACHT MAXELL LTD
Soft magnetic sheet, module including the sheet and non-contact power transmission system including the module
InactiveUS20100007215A1TransformersInorganic material magnetismElectric power transmissionTransport system
A non-contact power transmission system comprises a power receiver and a power transmitter. The power transmitter includes a transmitter coil. The power receiver includes a module which comprises a coil sheet and a soft magnetic sheet stacked on the coil sheet. The coil sheet includes a receiver coil. Electric power is transmitted from the transmitter coil to the receiver coil. The soft magnetic sheet comprises a pair of insulation films and a soft magnetic member hermetically interposed between the insulation films.
Owner:TOKIN CORP
Hexagonal ferrite magnetic particle and method of manufacturing the same, and magnetic recording medium
ActiveUS20110244272A1Improve coercive forceReduce particlesMaterial nanotechnologyMagnetic materials for record carriersHeat treatedMaterials science
An aspect of the present invention relates to a method of manufacturing a hexagonal ferrite magnetic particle comprising melting an Al-containing starting material mixture to prepare a melt and quenching the melt to obtain an amorphous material; subjecting the amorphous material to heat treatment to cause a hexagonal ferrite magnetic particle to precipitate in a product obtained by the heat treatment; collecting a hexagonal ferrite magnetic particle by subjecting the product to treatment with an acid and washing, wherein the hexagonal ferrite magnetic particle collected has a particle size ranging from 15 to 30 nm, comprises 0.6 to 8.0 weight percent of Al, based on Al2O3 conversion, relative to a total weight of the particle, and Al adheres to a surface of the hexagonal ferrite magnetic particle.
Owner:FUJIFILM CORP
Field emission system and method
InactiveUS20090278642A1Electromagnets without armaturesPermanent magnetsElectric fieldAtomic physics
An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.
Owner:CORRELATED MAGNETICS RES LLC
Method of manufacturing hexagonal ferrite magnetic powder, magnetic recording medium and method of manufacturing the same
ActiveUS20120244387A1Good dispersionReduce dispersion loadMagnetic materials for record carriersIron organic compoundsMagnetic liquidsSolvent
An aspect of the present invention relates to a method of manufacturing hexagonal ferrite magnetic powder. The method of manufacturing hexagonal ferrite magnetic powder comprises wet processing hexagonal ferrite magnetic particles obtained following acid treatment in a water-based solvent to prepare an aqueous magnetic liquid satisfying relation (1) relative to an isoelectric point of the hexagonal ferrite magnetic particles: pH0−pH*≧2.5, wherein, pH0 denotes the isoelectric point of the hexagonal ferrite magnetic particles and pH* denotes a pH of the aqueous magnetic liquid, which is a value of equal to or greater than 2.0, adding a surface-modifying agent comprising an alkyl group and a functional group that becomes an anionic group in the aqueous magnetic liquid to the aqueous magnetic liquid to subject the hexagonal ferrite magnetic particles to a surface-modifying treatment, and removing the water-based solvent following the surface-modifying treatment to obtain hexagonal ferrite magnetic particles.
Owner:FUJIFILM CORP
Preparation of Rare Earth Permanent Magnet Material
ActiveUS20080245442A1Improve remanenceImprove coercive forceElectric discharge tubesPermanent magnetsRare-earth elementRemanence
A method for preparing a rare earth permanent magnet material comprising the steps of:disposing a powder comprising one or more members selected from an oxide of R2, a fluoride of R3, and an oxyfluoride of R4 wherein R2, R3 and R4 each are one or more elements selected from among rare earth elements inclusive of Y and Sc on a sintered magnet form of a R1—Fe—B composition wherein R1 is one or more elements selected from among rare earth elements inclusive of Y and Sc, andheat treating the magnet form and the powder at a temperature equal to or below the sintering temperature of the magnet in vacuum or in an inert gas.The invention offers a high performance, compact or thin permanent magnet having a high remanence and coercivity at a high productivity.
Owner:SHIN ETSU CHEM IND CO LTD
Magnetic tape and magnetic tape device
ActiveUS10074393B2Improve accuracyExact reproductionMaterials with ironAlignment for track following on tapesMagnetic force microscopeMagnetic tension force
Owner:FUJIFILM CORP
Non-Oriented Electrical Steel Sheet and Production Process Thereof
ActiveUS20090202383A1Excellent mechanical characteristicImprove surface propertiesInorganic material magnetismTransformers/inductances detailsElectrical steelMagnetic characteristic
A main object thereof is to provide a non-oriented electrical steel sheet being excellent in surface characteristics and having both excellent mechanical characteristics and magnetic characteristics necessary for a rotor of rotating machines such as motors and generators which rotate at a high speed, and a method for producing the same. To achieve the object, the present invention provides a non-oriented electrical steel sheet comprising in % by mass: 0.06% or less of C; 3.5% or less of Si; from 0.05% or more to 3.0% or less of Mn; 2.5% or less of Al; 0.30% or less of P; 0.04% or less of S; 0.02% or less of N; at least one element selected from the group consisting of Nb, Ti, Zr and Vin the predetermined range; and a balance consisting of Fe and impurities; and having a recrystallized fraction being less than 90%.
Owner:NIPPON STEEL CORP
Crystalline composition, wafer, and semi-conductor structure
ActiveUS20080008855A1Reduce defect levelConductive materialSolid-state devicesCrystallographySemiconductor structure
A crystalline composition is provided. The crystalline composition may include gallium and nitrogen; and the crystalline composition may have an infrared absorption peak at about 3175 cm−1, with an absorbance per unit thickness of greater than about 0.01 cm−1.
Owner:SLT TECH
Systems and methods of loading fluid in a prosthetic knee
InactiveUS7198071B2Efficient loadingIncrease speedLiquid fillingOther chemical processesMagnetorheological fluidEngineering
Owner:OSSUR HF
Magnetic tape
ActiveUS20160276076A1Maintain wear resistanceMaintenance of such surfaceInorganic material magnetismRecord information storageMagnetic tapeTransmission microscopy
The magnetic tape includes a magnetic layer containing ferromagnetic hexagonal ferrite powder, abrasive, and binder on a nonmagnetic support, wherein the ferromagnetic hexagonal ferrite powder exhibits an activation volume of less than or equal to 1,800 nm3, and inclination, cos θ, of the ferromagnetic hexagonal ferrite powder relative to a surface of the magnetic layer as determined by sectional observation by a scanning electron transmission microscope is greater than or equal to 0.85 but less than or equal to 1.00.
Owner:FUJIFILM CORP
Flux concentrator and method of making a magnetic flux concentrator
ActiveUS20110050382A1Fewer eddy currents formingSuitable characteristicElectromagnetic wave systemTransformersMagnetic fluxLubricant
A flux concentrator and method for manufacturing a flux concentrator is provided. The method can include combining powdered soft magnetic material, a binder, a solvent, a internal lubricant; mixing the materials to create a mixture, evaporating the solvent from the mixture, molding the mixture to form a flux concentrator, and curing the flux concentrator. The flux concentrator may be laminated and broken into multiple pieces, which makes the flux concentrator more flexible. Breaking the flux concentrator does not significantly affect the magnetic properties. Since the permeability of the binder is very similar to that of air, adding tiny air gaps between the fractions is not significantly different than adding more binder.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD
Planar coil element and method for producing the same
ActiveUS20130249664A1Easy to produceLow viscosityInorganic material magnetismTransformers/inductances detailsViscositySpherical form
In a planar coil element and a method for producing the same, a metal magnetic powder-containing resin containing an oblate or needle-like first metal magnetic powder contains a second metal magnetic powder having an average particle size (1 μm) smaller than that (32 μm) of the first metal magnetic powder, which significantly reduces the viscosity of the metal magnetic powder-containing resin. Therefore, the metal magnetic powder-containing resin is easy to handle when applied to enclose a coil unit, which makes it easy to produce the planar coil element.
Owner:TDK CORPARATION
Hexagonal ferrite magnetic powder for magnetic recording, method for producing hexagonal ferrite magnetic particles, and magnetic recording medium
ActiveUS9748026B2High coated film durabilityIncreased durabilityMagnetic materials for record carriersRecord information storageMaterials scienceMetal
Owner:FUJIFILM CORP
Magnetic tape and magnetic tape device
ActiveUS20170355022A1Improve accuracyExact reproductionMaterials with ironAlignment for track following on tapesMagnetic force microscopeMagnetic tape
The magnetic tape includes a magnetic layer having ferromagnetic powder and a binder on a non-magnetic support, in which the magnetic layer includes a timing-based servo pattern, the ferromagnetic powder is ferromagnetic hexagonal ferrite powder having an activation volume equal to or smaller than 1,600 nm3, and an edge shape of the timing-based servo pattern specified by a magnetic force microscope observation is a shape in which a difference (l99.9−l0.1) between a value l99.9 of a cumulative frequency function of 99.9% of a position deviation width from an ideal shape in a longitudinal direction of the magnetic tape and a value l0.1 of the cumulative frequency function of 0.1% thereof is equal to or smaller than 180 nm.
Owner:FUJIFILM CORP
Anodizing Aluminum and Alloys Thereof
This invention encompasses methods of producing a colored oxide layer on an aluminum material by anodizing the aluminum material in an electrolyte comprising water, sulfuric acid and oxalic acid. The anodizing step comprises passing at least two sequential current densities through the electrolyte. Methods of making and using article with a colored oxide layer on an aluminum material make by the methods disclosed herein are also disclosed.
Owner:DURACOUCHE INT
Hexagonal ferrite magnetic particles, magnetic recording powder, and magnetic recording medium
ActiveUS20140295214A1High densityReduce noiseMaterials with ironIron oxides/hydroxidesThermal stabilityBiological activation
Hexagonal ferrite magnetic particles have an activation volume ranging from 1,000 nm3 to 1,500 nm3, and ΔE10% / kT, thermal stability at 10% magnetization reversal, is equal to or greater than 40.
Owner:FUJIFILM CORP
Magnetic recording medium and coating composition for magnetic recording medium
ActiveUS20160093321A1Increased durabilitySmall particle sizeInorganic material magnetismRecord information storageHydrogen atomMagnetic layer
The magnetic recording medium comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, and further comprises a compound denoted by Formula (1):wherein, in Formula (1), X denotes —O—, —S—, or NR1—; each of R and R1 independently denotes a hydrogen atom or a monovalent substituent; L denotes a divalent connecting group; Z denotes a partial structure of valence n comprising at least one group selected from the group consisting of carboxyl groups and carboxylate groups; m denotes an integer of greater than or equal to 2, and n denotes an integer of greater than or equal to 1.
Owner:FUJIFILM CORP
Magnetic particle and method of preparing the same, and magnetic recording medium
Owner:FUJIFILM CORP
Power receiving device, and electronic apparatus and non-contact charger using the same
ActiveUS20090058358A1Suppress feverReduce charging efficiencyTransformersSecondary cellsEngineeringSpiral coil
Disclosed is an electronic apparatus (1) comprising a power receiving device (2) and an electronic apparatus main body (3). The power receiving device (2) comprises a power receiving coil (11) having a spiral coil, a rectifier (12) and a secondary battery (13). The electronic apparatus main body (3) comprises an electronic device (14) and a circuit board (15). A magnetic foil (16) is arranged in at least one position between the spiral coil (11) and the secondary battery (13), the rectifier (12), the electronic device (14) or the circuit board (15). The magnetic foil (16) has a value expressed as the product of the saturation flux density MS and the thickness t, namely Ms·t, of not less than 15.
Owner:KK TOSHIBA +1
Insulating magnectic metal particles and method for manufacturing insulating magnetic material
ActiveUS20080029300A1Magnetic/electric field screeningMetal-working apparatusMetal particleMaterials science
An insulating magnetic metal particle includes a magnetic metal particle containing at least one metal selected from the group consisting of Co, Fe, and Ni and having a diameter of 5 to 500 nm, a first inorganic insulating layer made of an oxide that covers the surface of the magnetic metal particle, and a second inorganic insulating layer made of an oxide that produces a eutectic crystal by reacting together with the first inorganic insulating layer at the time of heating them, the second inorganic insulating layer being coated on the first inorganic insulating layer. A thickness ratio of the second inorganic insulating layer with respect to the first inorganic insulating layer is set so that the first inorganic insulating layer remains on the surface of the magnetic metal particle after producing the eutectic crystal.
Owner:KK TOSHIBA
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