Free Metal Or Alloy Containing Patents (Class 252/62.55)
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Patent number: 8840800Abstract: A magnetic material is disclosed, which includes magnetic particles containing at least one magnetic metal selected from the group including Fe, Co and Ni, and at least one non-magnetic metal selected from Mg, Al, Si, Ca, Zr, Ti, Hf, Zn, Mn, rare earth elements, Ba and Sr; a first coating layer of a first oxide that covers at least a portion of the magnetic particles; oxide particles of a second oxide that is present between the magnetic particles and constitutes an eutectic reaction system with the first oxide; and an oxide phase that is present between the magnetic particles and has an eutectic structure of the first oxide and the second oxide.Type: GrantFiled: August 29, 2012Date of Patent: September 23, 2014Assignee: Kabushiki Kaisha ToshibaInventors: Tomohiro Suetsuna, Seiichi Suenaga, Toshihide Takahashi, Tomoko Eguchi, Koichi Harada, Yasuyuki Hotta
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Patent number: 8840801Abstract: This invention relates to a manufacturing method of colloid comprising magnetic nanoclusters and magnetic nanocluster colloid made by the same. More particularly, this invention relates to a manufacturing method of colloid comprising magnetic nanoclusters comprising magnetic precursor and heterometal precursor by a certain ratio and magnetic nanocluster colloid made by the same.Type: GrantFiled: April 5, 2011Date of Patent: September 23, 2014Assignees: Seoul National University R&DB Foundation, Nanobrick Co., Ltd.Inventors: Jin Kyu Lee, Jin Myung Cha
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Publication number: 20140275583Abstract: Superparmagnetic acid-functionalized nanoparticle catalysts are provided along with methods of using the same to protonate an oxygen atom of a carbon-oxygen bond. Particularly, the catalysts comprise a nanoparticle having a ferromagentic core surrounded by a metal oxide shell. The nanoparticle is at least partially coated with an acid-functionalized siloxane compound. The acid-functionalized nanoparticles may be used to catalyze any number of reactions that can be catalyzed in the presence of protons. The ferromagnetic core permits the nanoparticle catalyst material to be separated from the reaction medium through application of a magnetic field and reused.Type: ApplicationFiled: October 24, 2012Publication date: September 18, 2014Applicant: Kansas State University Research FoundationInventors: Hongwang Wang, Stefan Bossmann, Byungjun Kollbe Ahn, Xiuzhi Susan Sun
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Publication number: 20140272447Abstract: The present invention describes the use of nanoparticle interfaces to chemically process solid nanomaterials into ones with tailorable core-void-shell architectures. The internal void sizes are proportional to the nanoparticle size, the shell thickness and composition, and can be either symmetric or asymmetric depending on the nature of the interface, each of which is controlled by the process of making.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: Syracuse UniversityInventors: Mathew M. Maye, Wenjie Wu
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Publication number: 20140264143Abstract: Porositized/activated carbon processed from carbon or carbonaceous raw materials. The porositization process comprises: (1) loading porositizing agents; (2) thermal treatment; and (3) porous generation. In another embodiment, the porositization process comprises: (1) loading porositizing agents; and (2) thermal treatment wherein the carbon or carbonaceous materials undergo carbonization and self-activation during the thermal treatment. Activated carbon products that exhibit magnetic functionality.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: UNIVERSITY OF NORTH TEXASInventors: Sheldon Q. Shi, Changlei Xia
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Publication number: 20140264144Abstract: A process for the production of coating graphene, and other carbon allotropes, onto carbon-coated magnetic nanoparticles while maintaining high magnetic moment and adsorption properties is disclosed.Type: ApplicationFiled: March 17, 2014Publication date: September 18, 2014Applicant: Honda Motor Co., Ltd.Inventor: Avetik Harutyunyan
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Patent number: 8834737Abstract: A method for making a carbon nanotube composite film is provided. A PVDF is dissolved into a first solvent to form a PVDF solution. A number of magnetic particles is dispersed into the PVDF solution to form a suspension. A carbon nanotube film is immersed into the suspension and then transferred into a second solvent. The carbon nanotube film structure is transferred from the second solvent and dried to form the carbon nanotube composite film.Type: GrantFiled: August 7, 2012Date of Patent: September 16, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Wei Xiong, Jia-Ping Wang, Kai-Li Jiang, Shou-Shan Fan
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Patent number: 8828263Abstract: A magnetorheological fluid comprising a mixture of soft and hard iron particles, an organic based carrier fluid, and optional additives such as anti-friction, anti-wear, or surfactants unexpectedly have improved durability when used in devices for control vibration and/or noise, for example, shock absorbers, elastomeric mounts, dampers, and the like.Type: GrantFiled: May 28, 2010Date of Patent: September 9, 2014Assignee: LORD CorporationInventors: Teresa L. Forehand, Daniel E. Barber
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Publication number: 20140239219Abstract: Disclosed herein are a ferrite powder having a core-shell structure, the core being made of iron (Fe) or iron-based compounds comprising iron (Fe) and the shell being made of metal oxides, a ferrite material comprising the ferrite powder and the glass, and multilayered chip components including the ferrite layer using the ferrite material, inner electrodes, and outer electrodes. According to the exemplary embodiments of the present invention, it is possible to provide the ferrite material capable of improving the change in the inductance L value in response to applied current by suppressing magnetization at high current. The multilayered chip components including the ferrite material according to the exemplary embodiment of the present invention can also be used in a band of MHz.Type: ApplicationFiled: May 8, 2014Publication date: August 28, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Sung Yong AN, Myeong Gi KIM, Ic Seob KIM
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Publication number: 20140239220Abstract: An Fe-based, primary, ultrafine crystalline alloy ribbon having a composition represented by the general formula of Fe100-x-y-z-a-bNixCuyNbzSiaBb, wherein x, y, z, a and b are numbers (atomic %) meeting the conditions of 4?x?6, 0.1?y?2, 0.1?z?4, 7?a?18, and 4?b?12; an as-cast structure in which fine crystal grains having a grain size distribution of 300 nm or less are dispersed in a proportion of more than 0% and 7% or less by volume in an amorphous matrix; and a thickness of 13-23 ?m.Type: ApplicationFiled: October 9, 2012Publication date: August 28, 2014Applicant: HITACHI METALS, LTD.Inventors: Masamu Naoe, Michihiro Nagao
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Patent number: 8808566Abstract: 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: GrantFiled: March 24, 2010Date of Patent: August 19, 2014Assignee: Panasonic CorporationInventors: Takeshi Takahashi, Yuya Wakabayashi
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Patent number: 8808568Abstract: A magnetorheological material comprises a magnetic particle and a ceramic material, wherein the magnetorheological material is in a dried form and further wherein a portion of the ceramic material is in the form of a nanocrystalline coating over the entire exterior surface of the magnetic particle and another portion of the ceramic material is in the form of a free nanocrystal. A magnetorheological material comprises a magnetic particle having a ceramic material coating over an external surface thereof as a result of a coating process, and a free nanocrystal of the ceramic material in the form of a residual by-product of the coating process.Type: GrantFiled: October 8, 2009Date of Patent: August 19, 2014Assignee: University of RochesterInventors: Rui Shen, Hong Yang, Shai N. Shafrir, Chunlin Miao, Mimi Wang, Joni Mici, John C. Lambropoulos, Stephen D. Jacobs
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Patent number: 8808567Abstract: A nanoparticle composition comprises a ferromagnetic or superparamagnetic metal nanoparticle, and a functionalized carbonaceous coating on a surface of the ferromagnetic or superparamagnetic metal nanoparticle. A magnetorheological fluid comprises the nanoparticle composition.Type: GrantFiled: November 3, 2011Date of Patent: August 19, 2014Assignee: Baker Hughes IncorporatedInventors: Oleg A. Mazyar, Soma Chakraborty, Terry R. Bussear, Michael H. Johnson
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Publication number: 20140225024Abstract: The present invention relates to a core-shell structured nanoparticle having hard-soft heterostructure, magnet prepared from the nanoparticle, and preparing method thereof. The core-shell structured nanoparticle having hard-soft magnetic heterostructure of present invention has some merits such as independence from resource supply problem of rare earth elements and low price and can overcome physical and magnetic limitations possessed by the conventional ferrite mono-phased material.Type: ApplicationFiled: January 9, 2013Publication date: August 14, 2014Applicants: LG Electronics Inc., INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUSInventors: Jongryoul Kim, Jinbae Kim, Namseok Kang, Sanggeun Cho
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Patent number: 8801955Abstract: Disclosed are water-soluble nanoparticles. The water-soluble nanoparticles are each surrounded by a multifunctional group ligand including an adhesive region, a cross linking region, and a reactive region. In the water-soluble nanoparticles, the cross-linking region of the multifunctional group ligand is cross-linked with another cross-linking region of a neighboring multifunctional group ligand.Type: GrantFiled: July 16, 2012Date of Patent: August 12, 2014Assignee: Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Jin-Woo Cheon, Young-Wook Jun, Jin-Sil Choi
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Patent number: 8801954Abstract: There is provided novel curable ink compositions comprising coated magnetic metal nanoparticles. In particular, there is provided ultraviolet (UV) curable gel inks comprising at least the coated magnetic metal nanoparticles, one curable monomer, a radiation activated initiator that initiates polymerization of curable components of the ink, a gellant. The inks may also include optional colorants and one or more optional additives. These curable gel UV ink compositions can be used for ink jet printing in a variety of applications.Type: GrantFiled: March 17, 2011Date of Patent: August 12, 2014Assignee: Xerox CorporationInventors: Gabriel Iftime, Naveen Chopra, Barkev Keoshkerian, Peter G. Odell, Marcel P. Breton
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Patent number: 8801936Abstract: The invention relates to a process for separating a dispersed phase from a continuous phase comprising the steps of i) contacting said phases with an effective amount of nanoparticles; ii) applying a magnetic field gradient to the obtained system; iii) separating the obtained phases wherein said nanoparticles are of the core shell type, said core consists of a metal or alloy having soft magnetic properties and said shell contains a graphene layers which are optionally functionalized; to new nanoparticles and method of manufacturing such nanoparticles.Type: GrantFiled: November 2, 2007Date of Patent: August 12, 2014Assignee: ETH ZürichInventors: Robert N. Grass, Wendelin Jan Stark
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Patent number: 8797137Abstract: 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: GrantFiled: May 17, 2011Date of Patent: August 5, 2014Assignee: Sumitomo Electric Industries, Ltd.Inventors: Asako Watanabe, Toru Maeda
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Patent number: 8790615Abstract: A method of synthesizing carbon-magnetite nanocomposites. In one embodiment, the method includes the steps of (a) dissolving a first amount of an alkali salt of lignosulfonate in water to form a first solution, (b) heating the first solution to a first temperature, (c) adding a second amount of iron sulfate (FeSO4) to the first solution to form a second solution, (d) heating the second solution at a second temperature for a first duration of time effective to form a third solution of iron lignosulfonate, (e) adding a third amount of 1N sodium hydroxide (NaOH) to the third solution of iron lignosulfonate to form a fourth solution with a first pH level, (f) heating the fourth solution at a third temperature for a second duration of time to form a first sample, and (g) subjecting the first sample to a microwave radiation for a third duration of time effective to form a second sample containing a plurality of carbon-magnetite nanocomposites.Type: GrantFiled: March 22, 2011Date of Patent: July 29, 2014Assignee: Board of Trustees of the University of ArkansasInventor: Tito Viswanathan
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Publication number: 20140205851Abstract: An interconnect structure for electrically joining two surfaces includes magnetic attachment structures and an anisotropic conductive adhesive (ACA). Magnetic attachment structures on a first surface are magnetically attracted to magnetic attachment structures on a second surface. Opposing magnetic attachment structures are joined via an ACA, which conducts electricity when compressed, and is electrically insulating when not compressed. The magnetic attraction between opposing magnetic attachment structures generates a sufficient force to maintain compression of the intervening ACA in order to sustain a desired level of electrical conductivity between the first surface and second surface. A method for joining two surfaces using the interconnect structure is disclosed. Additionally, a magnetic anisotropic conductive adhesive having magnetic conductive particles dispersed therein is disclosed.Type: ApplicationFiled: January 23, 2013Publication date: July 24, 2014Inventors: Ravindranath V. MAHAJAN, Aleksandar ALEKSOV, Debendra MALLIK, Ian A. YOUNG, Rajasekaran SWAMINATHAN, Sairam AGRAHARAM, John S. GUZEK
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Publication number: 20140202171Abstract: A magnetocaloric cascade containing at least three different magnetocaloric materials with different Curie temperatures, which are arranged in succession by descending Curie temperature, wherein none of the different magnetocaloric materials with different Curie temperatures has a higher layer performance Lp than the magnetocaloric material with the highest Curie temperature and wherein at least one of the different magnetocaloric materials with different Curie temperatures has as lower layer performance Lp than the magnetocaloric material with the highest Curie temperature wherein Lp of a particular magnetocaloric material being calculated according to formula (I): Lp=m*dTad,max with dTad,max: maximum adiabatic temperature change which the particular magnetocaloric material undergoes when it is magnetized from a low magnetic field to high magnetic field during magnetocaloric cycling, m: mass of the particular magnetocaloric material contained in the magnetocaloric cascade.Type: ApplicationFiled: January 23, 2014Publication date: July 24, 2014Applicant: BASF SEInventors: Colman CARROLL, Olaf Rogge, Bernard Hendrik Reesink, Andrew Rowe, Danny Arnold, Armando Tura
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Publication number: 20140191835Abstract: A magnetic material is constituted by a grain compact formed by compacting multiple metal grains that in turn are constituted by an Fe—Si-M soft magnetic alloy (where M is a metal element that oxidizes more easily than Fe), wherein individual metal grains have oxide film formed at least partially around them as a result of oxidization of the metal grains; the grain compact is formed primarily via bonding between oxide films formed around adjacent metal grains; and the apparent density of the grain compact 1 is 5.2 g/cm3 or more, or preferably 5.2 to 7.0 g/cm3.Type: ApplicationFiled: February 23, 2012Publication date: July 10, 2014Applicant: TAIYO YUDEN CO., LTD.Inventors: Hideki Ogawa, Atsushi Tanada
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Publication number: 20140183402Abstract: Disclosed is an iron-based soft magnetic powder for dust core use, which includes an iron-based soft magnetic matrix powder and a phosphate conversion coating on a surface of the matrix powder. The phosphate conversion coating contains nickel element and has an aluminum content of equal to or less than that in the matrix powder. The iron-based soft magnetic powder has such excellent heat resistance as to maintain electrical insulation at satisfactory level even after subjected to a high-temperature heat treatment.Type: ApplicationFiled: June 15, 2012Publication date: July 3, 2014Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Mamoru Hosokawa, Wataru Urushihara, Takeshi Ohwaki, Tomotsuna Kamijo, Hirofumi Hojo
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Patent number: 8764917Abstract: A ferromagnetic compound magnet in accordance with the present invention includes a ferromagnetic compound based on a binary alloy containing R—Fe system (R is a 4f transition element or Y) or a ternary allay containing R—Fe-T system (R is a 4f transition element or Y, and T is a 3d transition element except for Fe, or Mo, Nb or W), the ferromagnetic compound being characterized by: atomic percentage of the element R to the element Fe or to the elements Fe and T is 15% or lower; an element F is incorporated into an interstitial position in a crystal lattice of the alloy. The ferromagnetic compound is expressed in a chemical formula of: R2Fe17Fx; R2(Fe,T)17Fx; R3Fe29Fy; R3(Fe,T)29Fy; RFe12Fz; or R(Fe,T)12Fz (0<x?3, 0<y?4, 0<z?1).Type: GrantFiled: November 30, 2010Date of Patent: July 1, 2014Assignee: Hitachi, Ltd.Inventors: Hiroyuki Suzuki, Matahiro Komuro, Yuichi Satsu, Takao Imagawa
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Publication number: 20140151594Abstract: A capsule having a solid core, a primary shell of liquid encapsulating the solid core and a secondary shell of particles encapsulating the primary shell. The primary and secondary shells are generally repulsive to each other. Also provided is a process for the manufacture of capsules and a process for the manufacture of a magnetic body.Type: ApplicationFiled: May 31, 2012Publication date: June 5, 2014Applicant: MAGNEQUENCH LIMITEDInventors: Zhao Wei, Han Zhisan, David Miller
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Publication number: 20140139311Abstract: A magnetic material contains multiple metal grains constituted by soft magnetic alloy and oxide film formed on a surface of the metal grains, which soft magnetic alloy includes Fe and a metal element that oxidizes more easily than Fe, wherein the magnetic material forms a grain compact having first bonding parts where adjacent metal grains are contacted and directly bonded together, second bonding parts where adjacent metal grains are bonded together via the oxide film formed around the entire surface of said adjacent metal grains other than the first bonding parts, and voids formed in an area other than the first and second bonding parts and surrounded by the oxide film.Type: ApplicationFiled: January 23, 2014Publication date: May 22, 2014Applicant: TAIYO YUDEN CO., LTD.Inventors: Hitoshi MATSUURA, Kenji OTAKE
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Publication number: 20140138570Abstract: A composite particle includes: a particle composed of a soft magnetic metallic material, and a coating layer composed of a soft magnetic metallic material having a different composition from that of the particle and fusion-bonded to the particle so as to cover the particle, wherein when the Vickers hardness of the particle is represented by HV1 and the Vickers hardness of the coating layer is represented by HV2, HV1 and HV2 satisfy the following relationship: 100?HV1?HV2, and when half of the projected area circle equivalent diameter of the particle is represented by r and the average thickness of the coating layer is represented by t, r and t satisfy the following relationship: 0.05?t/r?1.Type: ApplicationFiled: November 19, 2013Publication date: May 22, 2014Inventors: Isamu OTSUKA, Yu MAETA, Toshikuni SATO
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Publication number: 20140138569Abstract: A composite particle includes: a first particle composed of a soft magnetic metallic material; and second particles composed of a soft magnetic metallic material having a different composition from that of the first particle and adhered to the first particle so as to cover the first particle, wherein when the Vickers hardness of the first particle is represented by HV1 and the Vickers hardness of the second particle is represented by HV2, HV1 and HV2 satisfy the following relationships: 250?HV1?1200, 100?HV2<250, and 100?HV1?HV2, and when the projected area circle equivalent diameter of the first particle is represented by d1 and the projected area circle equivalent diameter of the second particle is represented by d2, d1 and d2 satisfy the following relationships: 30 ?m?d1?100 ?m and 2 ?m?d2?20 ?m.Type: ApplicationFiled: November 19, 2013Publication date: May 22, 2014Inventors: Isamu OTSUKA, Yu MAETA, Toshikuni SATO
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Publication number: 20140124696Abstract: An organically surface-bonded metal or metal oxide material including an inorganic metal or metal oxide and an organic material. The organic material is coated on the surface of the inorganic metal or metal oxide. The inorganic metal or metal oxide and the organic material are linked through a strong chemical bond. The strong chemical bond includes a covalent bond between a metal in the inorganic metal or metal oxide and a nitrogen in the organic material.Type: ApplicationFiled: January 14, 2014Publication date: May 8, 2014Applicant: Beijing Gignano Biointerface Co. LtdInventor: Boliang GUO
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Patent number: 8709274Abstract: There is provided novel curable ink compositions comprising surfactant-coated magnetic metal nanoparticles. In particular, there is provided ultraviolet (UV) curable gel inks comprising at least a coated magnetic metal nanoparticles, one curable monomer, a radiation activated initiator that initiates polymerization of curable components of the ink, and optionally 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: April 29, 2014Assignee: Xerox CorporationInventors: Gabriel Iftime, Naveen Chopra, Barkev Keoshkerian, Peter G. Odell, Marcel P. Breton
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Publication number: 20140085039Abstract: A composite iron-based powder suitable for soft magnetic applications such as inductor cores. Also, a method for producing a soft magnetic component and the component produced by the method.Type: ApplicationFiled: December 19, 2011Publication date: March 27, 2014Applicant: HOGANAS AB (Publ)Inventors: Zhou Ye, Hanna Staffansson
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Publication number: 20140077121Abstract: A generic route for synthesis of asymmetric nanostructures. This approach utilizes submicron magnetic particles (Fe3O4—SiO2) as recyclable solid substrates for the assembly of asymmetric nanostructures and purification of the final product. Importantly, an additional SiO2 layer is employed as a mediation layer to allow for selective modification of target nanoparticles. The partially patched nanoparticles are used as building blocks for different kinds of complex asymmetric nanostructures that cannot be fabricated by conventional approaches. The potential applications such as ultra-sensitive substrates for surface enhanced Raman scattering (SERS) have been included.Type: ApplicationFiled: September 18, 2012Publication date: March 20, 2014Applicant: UChicago Argonne, LLCInventors: Yugang Sun, Yongxing Hu
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Publication number: 20140070916Abstract: Metal powder has composite particles each coated with a Zn-based ferrite film not containing Ni.Type: ApplicationFiled: November 19, 2013Publication date: March 13, 2014Applicant: MURATA MANUFACTURING CO., LTD.Inventor: Mitsuru ODAHARA
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Publication number: 20140049348Abstract: A magnetic material suitable for a coil component has multiple metal grains constituted by Fe—Si-M soft magnetic alloy (where M is a metal element that oxidizes more easily than Fe) and oxide film formed on the surface of the metal grains, wherein such magnetic material includes a grain compact having bonding parts where adjacent metal grains are bonded together via the oxide film formed on their surface, and bonding parts where metal grains are directly bonded together in areas where oxide film does not exist. The magnetic material is capable of improving both insulation resistance and magnetic permeability.Type: ApplicationFiled: October 13, 2011Publication date: February 20, 2014Applicant: TAIYO YUDEN CO., LTD.Inventors: Hitoshi Matsuura, Kenji Otake
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Patent number: 8641918Abstract: A composite material comprises magnetic particles dispersed in electrically insulating material. The magnetic particles have an aspect ratio greater than 1 (preferably greater than 10) and a concentration sufficiently high to produce negative permeability. The magnetic particles may be magnetic flakes of reduced carbonyl iron of average diameter 50 ?m, average thickness 1 ?m and aspect ratio 50, the magnetic flakes being at least 25% by volume of the composite material. The magnetic flakes may be aligned to produce enhanced permeability. The electrically insulating material may be paraffin wax, particulate PTFE, or another polymer. To control permittivity, the composite material may include an electrically conducting component such as graphite or conductive coatings upon the magnetic flakes.Type: GrantFiled: August 15, 2008Date of Patent: February 4, 2014Assignee: Qinetiq LimitedInventors: Shahaid Hussain, Philip Mark Shryane Roberts, Peter Allen Hobson
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Patent number: 8641817Abstract: The present invention relates to a paint with metallic microwires, to the process for integrating metallic microwires to obtain such paint, and to a process for applying said paint on metallic surfaces (1). The process for applying paint is performed in several steps: applying a first coat (2) of primer on the metallic surface; applying on the first coat (2) a second coat (3, 3?) of paint; applying on said second coat (3) an active third coat (4) of a paint containing microwires; and sanding said active third coat (4) with fine grain sandpaper to remove the microwires oriented perpendicular to the plane of the metallic surface; the maximum attenuation frequency of the reflectivity of said electromagnetic radiation being determined within of the range of maximum attenuation frequencies given by the composition of the paint with microwires, and by the thicknesses and dielectric constants of the different coats.Type: GrantFiled: April 7, 2011Date of Patent: February 4, 2014Assignee: Micromag 2000, S.L.Inventors: Daniel Cortina Blanco, Pilar Marin Palacios, Antonio Hernando Grande, Ainhoa Gonzalez Gorriti
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Patent number: 8641823Abstract: Reactor designs for use in ammonothermal growth of group-III nitride crystals. Internal heating is used to enhance and/or engineer fluid motion, gas mixing, and the ability to create solubility gradients within a vessel used for the ammonothermal growth of group-III nitride crystals. Novel baffle designs are used for control and improvement of continuous fluid motion within a vessel used for the ammonothermal growth of group-III nitride crystals.Type: GrantFiled: November 4, 2009Date of Patent: February 4, 2014Assignee: The Regents of the University of CaliforniaInventors: Siddha Pimputkar, Derrick S. Kamber, James S. Speck, Shuji Nakamura
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Publication number: 20140027667Abstract: Superparamagnetic core shell nanoparticles having a core of a iron cobalt ternary alloy and a shell of a silicon oxide directly on the core and a particle size of 2 to 200 nm are provided. Methods to prepare the nanoparticles are also provided.Type: ApplicationFiled: July 26, 2012Publication date: January 30, 2014Applicant: Toyota Motor Engineering & Manufacturing NAInventor: Michael Paul Rowe
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Publication number: 20140023821Abstract: A magnetic composite including a magnetic material; and a binder including a metallic glass, a glass frit, or a combination thereof.Type: ApplicationFiled: January 8, 2013Publication date: January 23, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Soon-Jae KWON, In-Gyu KIM, Eun-Sung LEE, Se-Yun KIM
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Publication number: 20130343997Abstract: Core-shell nanoparticles comprises a phosphorescent core and metal shell comprising at least two metals The phosphorescent core may comprise an up converting phosphor. The phosphorescent core may comprise a trivalent rare earth cation. The phosphorescent core further may comprise a monovalent alkali metal. The phosphorescent core may optionally comprises a second and also optionally a third trivalent rare earth cation.Type: ApplicationFiled: December 16, 2011Publication date: December 26, 2013Inventors: Ian M. Kennedy, Sudheendra Lakshmana
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Publication number: 20130335477Abstract: 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: August 21, 2013Publication date: December 19, 2013Applicant: Xerox CorporationInventors: Gabriel Iftime, C. Geoffrey Allen, Peter G. Odell, Caroline Turek
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Publication number: 20130320254Abstract: A magnetic data storage medium comprising: an ion doped magnetic recording layer having a continuous grading of coercivity or anisotropy, wherein the coercivity or anisotropy is at a minimum substantially at one side of the magnetic recording layer, and having substantial portion of maximum coercivity or anisotropy at the other side of the magnetic recording layer. Also, a method of fabricating a magnetic data storage medium is included.Type: ApplicationFiled: January 31, 2012Publication date: December 5, 2013Applicants: National University of Singapore, International Business Machines CorporationInventors: Charanjit Singh Bhatia, Koashal Kishor Mani Pandey, Nikita Gaur, Siegfried L. Maurer, Ronald W. Nunes
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Publication number: 20130316179Abstract: Provided are a metal-carbon composite material which can have improved productivity, has sufficient performance, can be used in a wide range of fields, and can have a reduced burden on the environment; and a method for manufacturing the same. The metal-carbon composite material includes: carbon; and nanoparticles formed of a metal or a metal oxide, wherein the ratio of the nanoparticles is 50% by weight or more and 99% by weight or less based on the total amount of the carbon and the nanoparticles, the metal-carbon composite material having a structure in which nanoparticles are dispersed in carbon.Type: ApplicationFiled: February 21, 2012Publication date: November 28, 2013Applicant: TOYO TANSO CO., LTD.Inventor: Hironori Orikasa
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Patent number: 8591759Abstract: The present disclosure relates to magnetic nanocomposite materials, and processes for the production thereof. In particular, the present disclosure relates to nanocomposites comprising magnetic nanoparticles surrounded by a polymer, which is bonded to a biodegradable polymer.Type: GrantFiled: May 31, 2012Date of Patent: November 26, 2013Assignee: Chemgreen Innovation Inc.Inventors: Khashayar Ghandi, Paul Themens
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Publication number: 20130299732Abstract: Disclosed is a hybrid filler for an electromagnetic shielding composite material and a method of manufacturing the hybrid filler, by which electromagnetic shielding and absorbing capabilities are improved and heat generated by electromagnetic absorption is effectively removed. The hybrid filler for an electromagnetic shielding composite material includes an expandable graphite (EG) having a plurality of pores, and magnetic particles integrated with a carbon nanotube (CNT) on outer surfaces thereof in a mixed manner, wherein the magnetic particles are inserted into the pores of the EG.Type: ApplicationFiled: July 24, 2012Publication date: November 14, 2013Applicant: HYUNDAI MOTOR COMPANYInventors: Jin Woo Kwak, Kyong Hwa Song, Han Saem Lee, Byung Sam Choi
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Publication number: 20130277601Abstract: A composite, soft-magnetic powder comprising soft-magnetic, iron-based core particles having an average particle size of 2-100 ?m, and boron nitride-based coating layers each covering at least part of each soft-magnetic, iron-based core particle, said coating layers being polycrystalline layers comprising fine boron nitride crystal grains having different crystal orientations and an average crystal grain size of 3-15 nm, the average thickness of said polycrystalline layers being 6.6% or less of the average particle size of said soft-magnetic, iron-based core particles, is produced by (1) mixing iron nitride powder having an average particle size of 2-100 ?m with boron powder having an average particle size of 0.1-10 ?m, (2) heat-treating the resultant mixed powder at a temperature of 600-850° C. in a nitrogen atmosphere, and (3) removing non-magnetic components.Type: ApplicationFiled: March 6, 2012Publication date: October 24, 2013Applicant: HITACHI METALS, LTD.Inventors: Fumi Kurita, Hisato Tokoro
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Publication number: 20130264512Abstract: A method of preparing a boron-doped transition metal pnictide magnetocaloric material, the method including: contacting a transition metal halide; a pnictogen element, a pnictogen oxide, or a combination thereof; a boron-containing oxide; and a reducing metal to provide a mixture; and heat treating the mixture to prepare the boron-doped transition metal pnictide magnetocaloric material.Type: ApplicationFiled: February 28, 2013Publication date: October 10, 2013Applicant: Samsung Electronics Co., Ltd.Inventors: Soon-jae Kwon, Tae-gon Kim, Kyung-han Ahn
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Patent number: 8551210Abstract: A composite article (1; 10; 40) comprises a plurality of inclusions (5) of a magnetocalorically active material embedded in a matrix (4) of a magnetocalorically passive material. The inclusions (5) and the matrix (4) have a microstructure characteristic of a compacted powder.Type: GrantFiled: December 27, 2007Date of Patent: October 8, 2013Assignee: Vacuumschmelze GmbH & Co. KGInventors: Georg Werner Reppel, Matthias Katter
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Publication number: 20130257573Abstract: The present invention relates to ferromagnetic particles comprising an Fe16N2 compound phase in an amount of not less than 70% as measured by Mössbauer spectrum, and at least one metal element X selected from the group consisting of Mn, Ni, Ti, Ga, Al, Ge, Zn, Pt and Si in such an amount that a molar ratio of the metal element X to Fe is 0.04 to 25%, the ferromagnetic particles having a BHmax value of not less than 5 MGOe, and a process for producing the ferromagnetic particles, and further relates to an anisotropic magnet or a bonded magnet which is obtained by magnetically orienting the ferromagnetic particles. The ferromagnetic particles according to the present invention can be produced in an industrial scale and are in the form of Fe16N2 particles comprising different kinds of metal elements having a large BHmax value.Type: ApplicationFiled: September 22, 2011Publication date: October 3, 2013Applicants: TOHOKU UNIVERSITY, TODA KOGYO CORPORATIONInventors: Migaku Takahashi, Tomoyuki Ogawa, Yasunobu Ogata, Akimasa Sakuma, Naoya Kobayashi, Chammika Ruwan Polwatta Gallage, Kaori Kohara
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Publication number: 20130249557Abstract: A material for use in a magnetic resonance system includes a carrier material and a doping material. The carrier material and the doping material are admixed in a specific proportion. A volume of the material smaller than 1 mm2 contains a substantially homogeneous intermixing of the carrier material and the doping material.Type: ApplicationFiled: March 21, 2013Publication date: September 26, 2013Inventors: Stephan Biber, Yvonne Candidus, Hubertus Fischer, Robert Greiner, Thomas Kundner