Free Metal Or Alloy Containing Patents (Class 252/62.55)
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Publication number: 20120286191Abstract: The present invention provides a powder for a magnetic member being excellent in moldability and difficult to oxidize, a powder compact produced from the powder, and a magnetic member suitable for a raw material of a magnetic member such as a rare earth magnet. A powder for a magnetic member includes magnetic particles 1 which constitute the powder for a magnetic member and each of which is composed of less than 40% by volume of a hydrogen compound 3 of a rare earth element, and the balance composed of an iron-containing material 2 which contains iron and an iron-boron alloy containing iron and boron. The hydrogen compound 3 of a rare earth element is dispersed in a phase of the iron-containing material 2. An antioxidant layer 4 having a low-oxygen permeability coefficient is provided on the surface of each of the magnetic particles 1.Type: ApplicationFiled: May 10, 2011Publication date: November 15, 2012Applicant: Sumitomo Electric Industries,Ltd.Inventors: Toru Maeda, Asako Watanabe
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Publication number: 20120280167Abstract: A ferrite magnet and a ferrite sintered magnet including a ferrite magnetic material are provided. A main phase of the ferrite magnetic material includes a ferrite phase having a hexagonal crystal structure, and metal element composition expressed by Ca1-w-x-yR wSr xBayFezMm wherein 0.25<w<0.5, 0.01<x<0.35, 0.0001<y<0.013 , y<x, 8.7<z<9.9, 1.0<w/m<2.1, 0.017<m/z<0.055 and Si component is at least included as a sub-component, and wherein; when content y1 mass % of the Si component in the ferrite magnetic material, with respect to SiO2, is shown on Y-axis and a total content x1 of z and m is shown on X-axis, a relation between x1 and y1 is within a range surrounded by 4 points placed on X-Y coordinate having the X and Y axes.Type: ApplicationFiled: March 15, 2011Publication date: November 8, 2012Applicant: TDK CORPORATIONInventors: Shigeki Yanagida, Takahiro Mori, Hiroyuki Morita, Nobuhiro Suto, Tatsuya Katoh, Yoshihiko Minachi
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Patent number: 8303838Abstract: There is provided novel curable ink compositions comprising inorganic oxide-coated magnetic metal nanoparticles. In particular, there is provided ultraviolet (UV) curable gel inks comprising at least the inorganic oxide-coated magnetic metal nanoparticles, one curable monomer, a radiation activated initiator that initiates polymerization of curable components of the ink. In particular the ink may include a gellant. The inks may also include optional colorants and one or more optional additives. These curable UV ink compositions can be used for ink jet printing in a variety of applications.Type: GrantFiled: March 17, 2011Date of Patent: November 6, 2012Assignee: Xerox CorporationInventors: Gabriel Iftime, Naveen Chopra, Barkev Keoshkerian, Peter G. Odell, Marcel P. Breton
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Patent number: 8295786Abstract: The present invention provides a magnetic sheet with improved resistance to folding while maintaining good magnetic characteristics and reliability; a method for producing the magnetic sheet; an antenna; and a portable communication device. A magnetic sheet of the present invention includes a flat magnetic powder, and a resin binder capable of dissolving in a solvent, wherein the magnetic sheet has a gradient of the content ratio of the magnetic powder to the resin binder in a thickness direction thereof, wherein, in use, the magnetic sheet is folded so that, of the front and back surfaces thereof, one surface whose magnetic powder content is lower than that of the other is folded inward, and wherein the difference in glossiness measured at a light-incident angle of 60° between the front and back surfaces is 9.4 or more.Type: GrantFiled: December 8, 2009Date of Patent: October 23, 2012Assignee: Sony Chemical & Information Device CorporationInventors: Keisuke Aramaki, Junichiro Sugita, Morio Sekiguchi
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Patent number: 8288458Abstract: An aggregate of functional particles includes a plurality of functional particles and an insulating material for covering the plurality of functional particles, and a large number of aggregates of functional particles are filled in a resin. Alternatively, insulating functional particles are added to the plurality of functional particles by an amount less than 50% of that of the functional particles in volume ratio.Type: GrantFiled: March 28, 2005Date of Patent: October 16, 2012Assignee: Nippon Kagaku Yakin Co., Ltd.Inventors: Kiyotaka Matsukawa, Kozo Ishihara, Kazuhiro Masano, Toshikazu Tanaka
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Publication number: 20120247461Abstract: A sorbing granular material (20) is provided including a plurality of particles of granular material (5). The particles of granular material (5) are mixed at least partly with magnetizable particles (10), so that in case of magnetization of the magnetizable particles (10), the particles of granular material (5) form a compacted sorbing granular material (20) based on magnetic attracting forces between the magnetizable particles (10). The compaction is reversible. In addition, a process for producing a sorbing granular material (20) is provided.Type: ApplicationFiled: September 23, 2011Publication date: October 4, 2012Applicant: DRÄGER SAFETY AG & CO. KGAAInventors: Jürgen UNGER, Annette KOSEGARTEN
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Publication number: 20120252297Abstract: Disclosed is a method of: providing a mixture of a polymer or a resin and a transition metal compound, producing a fiber from the mixture, and heating the fiber under conditions effective to form a carbon nanotube-containing carbonaceous fiber. The polymer or resin is an aromatic polymer or a precursor thereof and the mixture is a neat mixture or is combined with a solvent. Also disclosed are a carbonaceous fiber or carbonaceous nanofiber sheet having at least 15 wt. % carbon nanotubes, a fiber or nanofiber sheet having the a polymer or a resin and the transition metal compound, and a fiber or nanofiber sheet having an aromatic polymer and metal nanoparticles.Type: ApplicationFiled: June 18, 2012Publication date: October 4, 2012Applicant: The Government of the United States of America as represented by the Secretary of the NavyInventors: Teddy M. Keller, Matthew Laskoski
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Publication number: 20120249375Abstract: A material contains a curable liquid polymer containing suspended nanoparticles capable of exhibiting a magnetic property. The nanoparticles are present in a concentration sufficient to cause the curable liquid polymer to flow in response to application of a magnetic field, enabling the material to be guided into narrow regions to completely fill such regions prior to the polymer being cured. A method includes applying a filler material to at least one component, the filler material including a heat curable polymer containing nanoparticles, and applying an electromagnetic field to at least part of the filler material. The nanoparticles contain a core capable of experiencing localized heating sufficient to at least partially cure surrounding polymer. Also disclosed is an assembly for use at radio frequencies. The assembly includes a substrate and at least one component supported by the substrate.Type: ApplicationFiled: May 23, 2008Publication date: October 4, 2012Inventors: Markku T. Heino, Reijo K. Lehtiniemi, Markku A. Oksanen, Eira T. Seppala, Pekka Martti Tapio Ikonen, Robin H.A. Ras, Jaakko Timonen, Maija Pohjakallio, Christoffer Johans
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Patent number: 8277679Abstract: The object of the present invention is to provide a composite magnetic material having well-balanced magnetic properties and chemical properties, and a magnetic element using thereof. Concretely, the present provides the composite magnetic material comprising a binder and a magnetic powder contains followings: Mn not less than 0.25 wt % and not larger than 3 wt %, Si not less than 1 wt % and not larger than 7 wt %, Cr not less than 2 wt % and not larger than 8 wt %, and the rest of Fe and inevitable impurities with respect to the total weight of a magnetic powder material, and a ratio of powder particles having the major/minor axis is not less than 2 is not larger than 5% of the total powder particles.Type: GrantFiled: February 10, 2011Date of Patent: October 2, 2012Assignee: Sumida CorporationInventors: Akihiko Nakamura, Keisuke Watanabe
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Publication number: 20120241317Abstract: A sputtering target comprising an oxide phase is dispersed in Co or a Co alloy phase, wherein the sputtering target is configured from a metal matrix phase containing Co, and a phase containing SiO2 and having an oxide which forms particles and is dispersed in an amount of 6 to 14 mol % (hereinafter referred to as the “oxide phase”), the sputtering target contains, in addition to components configuring the metal matrix phase and the oxide phase, a Cr oxide scattered in or on a surface of the oxide phase in an amount of 0.3 mol % or more and less than 1.0 mol %, and an average area of the respective particles contained in the oxide phase is 2.0 ?m2 or less. The provided sputtering target comprising an oxide phase is dispersed in Co or a Co alloy phase can reduce arcing, obtain a stable discharge in a magnetron sputtering device, and reduce the amount of particles that is generated during high density sputtering.Type: ApplicationFiled: October 13, 2010Publication date: September 27, 2012Applicant: JX NIPPON MINING & METALS CORPORATIONInventors: Yuki Ikeda, Yuichiro Nakamura, Shin-ichi Ogino
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Publication number: 20120244065Abstract: Disclosed is a magnetic catalyst formed by a single or multiple nano metal shells wrapping a carrier, wherein at least one of the metal shells is iron, cobalt, or nickel. The magnetic catalyst with high catalyst efficiency can be applied in a hydrogen supply device, and the device can be connected to a fuel cell. Because the magnetic catalyst can be recycled by a magnet after generating hydrogen, the practicability of the noble metals such as Ru with high catalyst efficiency is dramatically enhanced.Type: ApplicationFiled: June 5, 2012Publication date: September 27, 2012Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chan-Li HSUEH, Cheng-Hong LIU, Jie-Ren KU, Ya-Yi HSU, Cheng-Yen CHEN, Reiko OHARA, Shing-Fen TSAI, Chien-Chang HUNG, Ming-Shan JENG
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Publication number: 20120235074Abstract: Solvent-based ink compositions which can be used for ink jet printing in a variety of applications. In particular, the present embodiments are directed to magnetic inks having desirable ink properties. The ink of the present embodiments comprise magnetic nanoparticles that are coated with various materials to prevent the exposure of the nanoparticles to oxygen, and provides robust prints.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: XEROX CORPORATIONInventors: GABRIEL IFTIME, Peter G. Odell, C. Geoffrey Allen, Marcel P. Breton, Richard P. N. Veregin
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Publication number: 20120236088Abstract: A phase change magnetic ink including a phase change ink carrier; an optional colorant; an optional dispersant; an optional synergist; an optional antioxidant; and a carbon coated magnetic nanoparticle comprising a magnetic core and a carbon shell disposed thereover.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: Xerox CorporationInventors: Gabriel Iftime, C. Geoffrey Allen, Peter G. Odell, Richard P.N. Veregin, Marcel P. Breton
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Publication number: 20120236089Abstract: A phase change magnetic ink and process for preparing same including comprising a phase change ink carrier; an optional colorant; an optional dispersant; an optional synergist; an optional antioxidant; and a coated magnetic nanoparticle comprising a magnetic core and a shell disposed thereover.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: Xerox CorporationInventors: Gabriel Iftime, Peter G. Odell, Marcel P. Breton
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Publication number: 20120236091Abstract: A phase change magnetic ink including a phase change ink carrier; an optional colorant; an optional dispersant; an optional synergist; an optional antioxidant; and a surfactant coated magnetic nanoparticle comprising a magnetic core and a shell disposed thereover.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: Xerox CorporationInventors: Gabriel Iftime, Peter G. Odell, Marcel P. Breton
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Publication number: 20120235075Abstract: Solvent-based ink compositions which can be used for ink jet printing in a variety of applications. In particular, the present embodiments are directed to magnetic inks having desirable ink properties. The ink of the present embodiments comprises magnetic nanoparticles that are coated with various materials to prevent the exposure of the nanoparticles to oxygen, and provides robust prints.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: XEROX CORPORATIONInventors: GABRIEL IFTIME, Peter G. Odell, C. Geoffrey Allen, Marcel P. Breton, Richard P. N. Veregin
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Publication number: 20120236090Abstract: A phase change magnetic ink including a phase change ink carrier; an optional colorant; an optional dispersant; an optional synergist; an optional antioxidant; and an inorganic oxide coated magnetic nanoparticle comprising a magnetic core and an inorganic oxide shell disposed thereover.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: Xerox CorporationInventors: Gabriel Iftime, Peter G. Odell, Marcel P. Breton
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Publication number: 20120229245Abstract: Provided is a soft magnetic powder used for obtaining a dust core having a low hysteresis loss, in particular, in a high temperature range. A soft magnetic powder includes an aggregate of composite magnetic particles, each including a soft magnetic particle containing Fe, Si, and Al, and an insulating coating film disposed on the surface thereof, and satisfies the expressions (1) and (2) below: Expression (1) . . . 27?2.5a+b?29 and Expression (2) . . . 6?b?9, where a represents the Si content (mass %) and b represents the Al content (mass %). The soft magnetic powder is capable of reducing the hysteresis loss, in a high-temperature environment, of a dust core obtained using the soft magnetic powder.Type: ApplicationFiled: May 17, 2011Publication date: September 13, 2012Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTDInventors: Asako Watanabe, Toru Maeda
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Patent number: 8263224Abstract: Disclosed is a resin composition containing a hexagonal ferrite and a resin, which is characterized in that the hexagonal ferrite is contained in an amount of 50-98 parts by weight per 100 parts by weight of the total of the resin composition.Type: GrantFiled: November 28, 2007Date of Patent: September 11, 2012Assignee: Asahi Kasei Chemicals CorporationInventor: Tetsuji Tokiwa
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Publication number: 20120211693Abstract: A ferromagnetic powder composition is provided comprising soft magnetic iron-based core particles having an apparent density of 3.2-3.7 g/ml, and wherein the surface of the core particles is provided with a phosphorus-based inorganic insulating layer and at least one metal-organic layer, located outside the first phosphorus-based inorganic insulating layer. A process further is provided for producing the composition and a method for the manufacturing of soft magnetic composite components prepared from the composition, as well as the obtained component.Type: ApplicationFiled: September 14, 2010Publication date: August 23, 2012Applicant: HOGANAS AB (PUBL)Inventors: Björn Skårman, Zhou Ye
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Patent number: 8241518Abstract: A soft magnetic material includes a plurality of composite magnetic particles including a metal magnetic particle and an insulating film surrounding a surface of the metal magnetic particle. The insulating film also contains a phosphate. The soft magnetic material further includes an aromatic polyetherketone resin and a metallic soap and/or an inorganic lubricant having a hexagonal crystal structure. The metallic soap and the inorganic lubricant are particles with an average particle size of not more than 2.0 ?m.Type: GrantFiled: May 15, 2007Date of Patent: August 14, 2012Assignees: Sumitomo Electric Industries, Ltd., Denso Corporation, Sumitomo Electric Sintered Alloy, Ltd.Inventors: Naoto Igarashi, Takao Nishioka, Yoshiyuki Shimada, Tsuyoshi Akao
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Patent number: 8236192Abstract: An ink including stabilized magnetic single-crystal nanoparticles, wherein the value of the magnetic anisotropy of the magnetic nanoparticles is greater than or equal to 2×104 J/m3. The magnetic nanoparticle may be a ferromagnetic nanoparticle, such as FePt. The ink includes a magnetic material that minimizes the size of the particle, resulting in excellent magnetic pigment dispersion stability, particularly in non-aqueous inkjet inks. The smaller sized magnetic particles of the ink also maintains excellent magnetic properties, thereby reducing the amount of magnetic particle loading required in the ink.Type: GrantFiled: June 26, 2008Date of Patent: August 7, 2012Assignee: Xerox CorporationInventors: Marcel P. Breton, Richard P. N. Veregin, Karen A. Moffat, Peter M. Kazmaier, Patricia A. Burns, Paul F. Smith
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Publication number: 20120168670Abstract: A composition of a crystalline ferromagnetic material based upon nanoscale cobalt carbide particles and to a method of manufacturing the ferromagnetic material of the invention via a polyol reaction are disclosed. The crystalline ferromagnetic cobalt carbide nanoparticles of the invention are useful for high performance permanent magnet applications. The processes according to the invention are extendable to other carbide phases, for example to Fe-, FeCo-carbides. Fe- and FeCo-carbides are realizable by using as precursor salts Fe-, Co-, and mixtures of Fe- and Co-salts, such as acetates, nitrates, chlorides, bromides, citrates, and sulfates, among others. The materials according to the invention include mixtures and/or admixtures of cobalt carbides, as both Co2C and Co3C phases. Mixtures may take the form of a collection of independent particles of Co2C and Co3C or as a collection of particles which consist of an intimate combination of Co2C and Co3C phases within individual particles.Type: ApplicationFiled: September 10, 2010Publication date: July 5, 2012Inventor: Vincent G. Harris
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Patent number: 8211327Abstract: 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, and heat 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.Type: GrantFiled: March 22, 2005Date of Patent: July 3, 2012Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hajime Nakamura, Koichi Hirota, Takehisa Minowa
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Publication number: 20120162330Abstract: An in situ process for preparing a phase change magnetic ink including heating a phase change ink composition to a first temperature sufficient to provide a melt composition; wherein the phase change ink composition comprises a carrier, an optional colorant, and an optional dispersant; placing the melt composition under inert atmosphere; heating the melt composition to a second temperature sufficient to effect decomposition of a metal carbonyl; adding the metal carbonyl to the melt composition under inert atmosphere at this second temperature to form metal nanoparticles thus forming in situ a phase change magnetic ink including the metal nanoparticles; optionally, filtering the phase change magnetic ink while in a liquid state; and cooling the phase change magnetic ink to a solid state.Type: ApplicationFiled: December 22, 2010Publication date: June 28, 2012Applicant: Xerox CorporationInventors: Gabriel Iftime, C. Geoffrey Allen, Peter G. Odell, Caroline Turek
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Publication number: 20120153212Abstract: The present invention relates to bulk magnetic nanocomposites and methods of making bulk magnetic nanocomposites.Type: ApplicationFiled: December 15, 2010Publication date: June 21, 2012Inventor: J. Ping Liu
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Publication number: 20120138844Abstract: Oxide-coated Fe powder for producing various electromagnetic circuit components requiring high resistivity is provided. The oxide-coated Fe powder is a Mg-containing oxide film-coated iron powder coated with an Mg—Fe—O ternary-based deposition film at least containing (Mg, Fe)O. The (Mg,Fe)O is a crystalline MgO-dissolving wustite. The Mg—Fe—O ternary-based oxide deposition film has a sulfur-enriched layer containing a higher concentration of sulfur than that of central portion of the iron powder, fine crystalline texture having a grain size of 200 nm or less, and the outermost surface is substantially composed of MgO. A composite soft magnetic material using the Mg-containing oxide film-coated iron powder is also provided.Type: ApplicationFiled: September 8, 2011Publication date: June 7, 2012Applicant: DIAMET CORPORATIONInventors: Muneaki Watanabe, Ryoji Nakayama, Gakuji Uozumi
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Patent number: 8182712Abstract: Techniques for dyeing material are disclosed, including providing a magnetorheological fluid containing a coloring agent onto a contacting surface, applying a magnetic field to the magnetorheological fluid to increase viscosity of the magnetorheological fluid, and contacting the material with the magnetorheological fluid on the contacting surface to dye the material with the coloring agent.Type: GrantFiled: January 12, 2011Date of Patent: May 22, 2012Assignee: Empire Technology Development LLCInventors: Maki Maekawa, Takahisa Kusuura
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Publication number: 20120119134Abstract: A powder mixture, which contains a soft magnetic powder and an insulating powder lubricant in an amount of 0.1% by mass or more relative to the soft magnetic powder, is formed by compacting at a compacting pressure of 800 MPa or less, thereby obtaining a powder compact that has a space factor of the soft magnetic powder of 93% or more. The powder compact can be used as a soft magnetic powdered core. The soft magnetic powdered core has a specific resistance or 10,000 ??cm or more. A powder of a metal soap such as barium stearate or lithium stearate is used as the insulating powder lubricant.Type: ApplicationFiled: July 8, 2010Publication date: May 17, 2012Applicant: HITACHI POWDERED METALS CO., LTDInventors: Kohei Muramatsu, Chio Ishihara, Masaki Yanaka
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Publication number: 20120106111Abstract: A composition of matter comprising a plurality of nanoparticles in a non-conductive binder, wherein, the type of nanoparticles form isolated parallel electrically and thermally conductive columns when cured in the presence of the magnetic field. Also wherein the plurality of nanoparticles are Paramagnetic or Ferromagnetic magnetic. Wherein the nano particles are coated, and of a particular shape. Wherein the particles are selected from the group consisting of; Al, Pt, Cr, Mn, crown glass, Fe, Ni, and Co, Ni—Fe/SiO2, Co/SiO2, Fe—Co/SiO2, Fe/nickel-ferrite, Ni—Zn-ferrite/SiO2, Fe—Ni/polymer, Co/polymer, ferrites, iron oxide and any combination and alloy thereof, and the Binder selected from the group consisting of; epoxies, polyurethanes, polyimides, polymeric materials, silicones, adhesives, acrylates, the UV curable modifier and any combination thereof.Type: ApplicationFiled: October 31, 2010Publication date: May 3, 2012Inventors: JOSEPH MAZZOCHETTE, Sarwan Kumar Khanna
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Publication number: 20120107603Abstract: In one embodiment, an article is provided. The article comprises a soft magnetic component. The soft magnetic component includes a nanostructured ferritic alloy. The nanostructured ferritic alloy includes a plurality of nanofeatures disposed in an iron-containing alloy matrix, wherein the nanofeatures comprise an oxide.Type: ApplicationFiled: October 29, 2010Publication date: May 3, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Richard DiDomizio, Francis Johnson, Matthew Joseph Alinger
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Publication number: 20120077021Abstract: A magnetic nanosilicon material comprising silicon nanoparticles impregnated with magnetic atoms. This magnetic nanosilicon material has both luminescent and magnetic properties. In certain embodiments of the invention, magnetic nanosilicon material is encapsulated in a polymer or silica sphere to provide a supermolecule. Supermolecules can be used in applications such as but not limited to detection and imaging.Type: ApplicationFiled: September 20, 2011Publication date: March 29, 2012Inventors: Munir H. Nayfeh, Zain H. Yamani
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Publication number: 20120049100Abstract: A metal-containing particle aggregate of an embodiment of the present invention includes a plurality of core-shell particles. Each of the core-shell particles includes: a core portion that contains at least one magnetic metal element selected from the first group consisting of Fe, Co, and Ni, and at least one metal element selected from the second group consisting of Mg, Al, Si, Ca, Zr, Ti, Hf, Zn, Mn, rare-earth elements, Ba, and Sr; and a shell layer that includes a carbon-containing material layer and an oxide layer that covers at least part of the core portion and includes at least one metal element that belongs to the second group and is contained in the core portion.Type: ApplicationFiled: August 24, 2011Publication date: March 1, 2012Applicant: Kabushiki Kaisha ToshibaInventors: Maki YONETSU, Tomohiro Suetsuna, Kouichi Harada, Seiichi Suenaga, Yasuyuki Hotta, Toshihide Takahashi, Tomoko Eguchi, Mutsuki Yamazaki
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Publication number: 20120049102Abstract: Disclosed are methods and compositions for aqueous electrodeposition of rare earth-transitional metal alloys comprising samarium-cobalt. Also disclosed are nanostructured magnetic coatings comprising a magnetic alloy of a rare earth metal, namely samarium, and a transition metal, namely cobalt.Type: ApplicationFiled: August 30, 2011Publication date: March 1, 2012Inventors: Ken Nobe, Jen-Chieh Wei, Morton Schwartz
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Patent number: 8123972Abstract: The present invention is to impart, to a sheet-like soft magnetic material, a configuration in which sheet thickness change is suppressed and in which fluctuation in magnetic permeability is small even under a high-temperature or a high-temperature, high-humidity environment, even when a plurality of thin curable soft magnetic sheets produced by a coating method are laminated. The sheet-like soft magnetic material is formed from a soft magnetic composition which is formed by mixing at least a flat soft magnetic powder, an acrylic rubber, an epoxy resin, a curing agent for the epoxy resin, and a solvent. The flat soft magnetic powder is arranged in an in-plane direction of the sheet-like soft magnetic material. An acrylic rubber having a glycidyl group is used for the acrylic rubber. The weight ratio of the flat soft magnetic powder with respect to the total amount of the acrylic rubber, the epoxy resin, and the curing agent for the epoxy resin is 3.7 to 5.8.Type: GrantFiled: October 22, 2007Date of Patent: February 28, 2012Assignees: Sony Corporation, Sony Chemical & Information Device CorporationInventors: Keisuke Aramaki, Junichiro Sugita, Morio Sekiguchi
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Publication number: 20120025651Abstract: A sintered magnet according to the present invention is a sintered magnet configured from a magnetic powder grain having Nd2Fe14B as a main component, in which: fluorine, a heavy rare earth element, oxygen, and carbon are segregated in part of grain-boundary regions of said sintered magnetic powder grain; concentration of the carbon is higher than concentration of the fluorine at a grain-boundary triple junction of the grain-boundary region; and concentration of the heavy rare earth element decreases from said grain-boundary triple junction toward an inside of said magnetic powder grain.Type: ApplicationFiled: February 18, 2010Publication date: February 2, 2012Inventors: Matahiro Komuro, Yuichi Satsu, Hiroyuki Suzuki, Takao Imagawa
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Publication number: 20120018665Abstract: An aspect of the present invention relates to a method of preparing a magnetic particle, which comprises attaching a transition metal-containing organic compound to a surface of a hard magnetic particle and then thermally decomposing the transition metal-containing organic compound to obtain the magnetic particle.Type: ApplicationFiled: July 22, 2011Publication date: January 26, 2012Applicants: TOHOKU UNIVERSITY, FUJIFILM CORPORATIONInventors: Yasushi HATTORI, An-Pang TSAI, Satoshi KAMEOKA
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Publication number: 20120012778Abstract: Methods for preparing magnetic nanoparticles comprising metal, metal carbide, metal nitride, metal sulfide, metal phosphide, metal oxide or a mixture thereof are disclosed. Methods for preparing magnetic nanoparticles having a core comprising metal, metal carbide, metal nitride, metal sulfide, metal phosphide, or a mixture thereof and a metal oxide shell are also disclosed. The methods comprise the solution-phase decomposition of a precursor at elevated temperature then exposure of the reaction mixture to an oxidising medium, such as air.Type: ApplicationFiled: December 21, 2009Publication date: January 19, 2012Inventors: Richard David Tilley, Soshan Cheong, Jintian Ren
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Publication number: 20120012777Abstract: A powder for dust core including a soft magnetic metal powder and a silicon impregnated layer made of silicon concentrated in a surface layer of the soft magnetic metal powder, in which a silicon dioxide powder is diffusion-bonded to a surface of the silicon impregnated layer to form a diffusion-bonded part while a part of the silicon dioxide powder is impregnated and diffused in the silicon impregnated layer and the other part of the same protrudes from the surface of the silicon impregnated layer. The diffusion-bonded part creates a gap with respect to another powder for dust core, thereby providing increased specific resistance.Type: ApplicationFiled: September 21, 2010Publication date: January 19, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaki Sugiyama, Toshiya Yamaguchi, Shota Ohira, Takeshi Hattori, Yusuke Oishi
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Publication number: 20120007013Abstract: A composite magnetic material is made by performing pressure compacting on metal magnetic powder to which a binding material is added, and the binding material contains an acrylic resin having a silyl group as a functional group. In addition, the composite magnetic material is subjected to a heat treatment at a temperature between 700 and 1,000° C. in a non-oxidizing atmosphere after the pressure compacting. The composite magnetic material has magnetic characteristics useful for electromagnetic components such as an inductor, a choke coil, and a transformer with a small size and at a high frequency.Type: ApplicationFiled: March 24, 2010Publication date: January 12, 2012Applicant: Panasonic CorporationInventors: Takeshi Takahashi, Yuya Wakabayashi
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Publication number: 20120007014Abstract: The present invention discloses a composite magnetic material. The composite magnetic material may comprise an Nd—Fe—B alloy and a Fe-based soft magnetic alloy having the general formula of Fe100-x-y-zAxRaSiyBz. A may be at least one element selected from Cu and Au. R may be at least one element selected from the group consisting of Ti, Zr, Hf, Mo, Nb, Ta, W and V. And the x, a, y, and z may satisfy: 0?x?3, 0?a?10, 0?y?20 and 2?z?25. The present invention further discloses a method of preparing the composite magnetic material as described above. According to the present invention, the composite magnetic material may have an enhanced magnetic energy product and residual magnetism respectively.Type: ApplicationFiled: March 26, 2010Publication date: January 12, 2012Applicant: BYD Company LimitedInventors: Qing Gong, Xin Du, Xiaofeng Cheng
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Publication number: 20120001116Abstract: The present invention provides a magnetic multilayer pigment flake and a magnetic coating composition that are relatively safe for human health and the environment. The pigment flake includes one or more magnetic layers of a magnetic alloy having a substantially nickel-free composition including about 40 wt % to about 90 wt % iron, about 10 wt % to about 50 wt % chromium, and about 0 wt % to about 30 wt % aluminum. The coating composition includes a plurality of the pigment flakes disposed in a binder medium.Type: ApplicationFiled: June 30, 2010Publication date: January 5, 2012Applicant: JDS Uniphase CorporationInventors: Vladimir P. Raksha, Paul T. Kohlmann, Cornelis Jan Delst, Paul G. Coombs
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Publication number: 20110315914Abstract: A nanocomposite with high dielectric constant includes both ferroelectric with non-ferroelectric fillers. This may improve, not only the dielectric constant of the nanocomposite but also provide additional thermal, electrical, optical, mechanical, or chemical properties to the nanocomposite for specific applications.Type: ApplicationFiled: June 29, 2011Publication date: December 29, 2011Applicant: PIXELLIGENT TECHNOLOGIES, LLCInventors: ZHIYUN CHEN, JUN XU, BRIAN L. WEHRENBERG, ZEHRA SERPIL GONEN-WILLIAMS, GREGORY D. COOPER
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Publication number: 20110309286Abstract: Collection enhanced materials, down stream additives, and methods of making the enhanced materials and down stream additives are provided. In one embodiment, a down stream additive is provided that includes an active phase component and at least one of a collection enhancing component. In other embodiments, the down stream additive may have attrition index from about two (2) to about ten (10) and/or an average diameter from about 20 ?m to about 60 ?m. In other embodiments, the down stream additive may have an active phase component which is incompatible with a process performed in an FCC unit. In yet another embodiment, a collection enhanced material having an average diameter from about 60 ?m to about 300 ?m is provided that includes an active component and a collection enhancing component.Type: ApplicationFiled: May 25, 2011Publication date: December 22, 2011Applicant: Intercat, Inc.Inventors: Mehdi Allahverdi, Guido Aru, Paul Diddams, Xunhua Mo, William Reagan, Shanthakumar Sithambaram
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Publication number: 20110309003Abstract: The present invention relates to an agglomerate of at least one particle P which is hydrophobicized on the surface with at least one first surface-active substance and at least one magnetic particle MP which is hydrophobicized on the surface with at least one second surface-active substance, a process for producing it and also the use of these agglomerates.Type: ApplicationFiled: March 3, 2010Publication date: December 22, 2011Applicants: SIEMENS AG, BASF SEInventors: Imme Domke, Hartmut Hibst, Alexej Michailovski, Norbert Mronga, Werner Hartmann, Wolfgang Krieglstein, Vladimir Danov
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Publication number: 20110303869Abstract: The present invention relates to cubic or octahedral ferrite nanoparticles and a method for preparing the same. In particular, the present invention is directed to a ferrite nanocube which is superparamagnetic or ferromagnetic, and a method for preparing a ferrite nanocube, comprising heating a mixture of a metal precursor, a surfactant and a solvent.Type: ApplicationFiled: September 25, 2009Publication date: December 15, 2011Applicant: SNU R&DB FOUNDATIONInventors: Taeghwan Hyeon, Dokyoon Kim
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Patent number: 8075794Abstract: Provided is a magnetic graphite nanoplatelet, and a method of manufacturing nanocomposites by introducing the magnetic nanoplatelets into a composite matrix. Expanded crystalline graphite, in the form of graphite nanoplatelets, is mixed with magnetic particles to adhere the particles to the nanoplatelets. The magnetic graphite nanoplatelets are combined with a composite matrix, typically a polymer, to form a nanocomposite. In the presence of an applied magnetic field, the magnetic graphite nanoplatelets orient and align consistent with the magnetic field to yield a composite having enhance mechanical, electrical and thermal properties.Type: GrantFiled: July 1, 2008Date of Patent: December 13, 2011Assignee: Teledyne Scientific & Imaging, LLCInventors: Rahul Ganguli, Julia J. Mack, Vivek Mehrotra
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Publication number: 20110297871Abstract: The present invention relates to a composite bead and a fabrication method thereof, and particularly, to a porous composite bead comprising superparamagnetic cluster and nanoparticles, such as light-emitting nanoparticles, s magnetic nanoparticles, metallic nanoparticles, metal oxide nanoparticles and the like, and a fabrication method thereof.Type: ApplicationFiled: December 28, 2010Publication date: December 8, 2011Inventors: Kyoungja WOO, Wooyoung PARK
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Publication number: 20110284794Abstract: To provide a method of manufacturing a powder for dust core capable of preventing generation of secondary particles during a siliconizing treatment and improving quality and productivity of the powder for dust core, a dust core made of the powder for dust core manufactured by the method, and an apparatus for manufacturing the powder for dust core, of a powder mixture comprising a soft magnetic metal powder and a powder for siliconizing including silicon dioxide, only the soft magnetic metal powder is heated by induction heating to transmit heat from the surface of the soft magnetic metal powder to the powder for siliconizing, thereby releasing a silicon element from the powder for siliconizing and diffusing and impregnating the silicon element into the surface of the soft magnetic metal powder to form a silicon impregnated layer.Type: ApplicationFiled: March 2, 2010Publication date: November 24, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masaki Sugiyama, Toshiya Yamaguchi, Shouta Ohira
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Publication number: 20110272622Abstract: A composite magnetic material is manufactured having magnetic properties that can excellently cope with the decreasing size and increasing electric current of magnetic elements, such as choke coils, and can be used in a high frequency range, a dust core using the composite magnetic material, and a method of manufacturing the same. The dust core includes magnetic metal powder and an insulating material, in which the magnetic metal powder has a Vickers hardness (Hv) of 230?Hv?1000, the insulating material has a compressive strength of 10000 kg/cm2 or lower and is in a mechanical collapsed state, and the insulating material in a mechanical collapsed state is interposed in the magnetic metal powder.Type: ApplicationFiled: January 14, 2010Publication date: November 10, 2011Applicant: Panasonic CorporationInventors: Yuya Wakabayashi, Takeshi Takahashi, Nobuya Matsutani