Free Metal Or Alloy Containing Patents (Class 252/62.55)
  • Patent number: 10207323
    Abstract: A composite magnetic material includes a plurality of soft-magnetic metal powders, a first oxide that covers a surface of each of the plurality of soft-magnetic metal powders, and a second oxide that covers a surface of the first oxide and is interposed among the plurality of soft-magnetic metal powders each coated with the first oxide. The first oxide has a first recess in a surface, and the second oxide is provided in the first recess. With this configuration, peeling between the first oxide and the second oxide can be prevented, so that the composite magnetic material having high mechanical strength can be provided.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: February 19, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Nobuya Matsutani, Takeshi Takahashi, Junichi Kotani
  • Patent number: 10189204
    Abstract: Techniques and compositions are disclosed for composite feedstocks with powder/binder systems suitable for three-dimensional printing, such as fused filament fabrication. The composite feedstocks may include a jacket about a core, with at least the core including a powder material suspended in a binder system and the jacket having a hardness or toughness greater than a hardness or toughness of the core for the feedstock. In general, the harder jacket may protect the core from unintended deformation or damage during transportation, storage, or use. For example, the difference in hardness or toughness between the jacket and the core may facilitate gripping the feedstock (e.g., by gear drives or the like) with a higher amount of force than is otherwise applicable if the feedstock were composed of the core alone, without damaging the core, during a fused filament fabrication process or another additive manufacturing process.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: January 29, 2019
    Assignee: Desktop Metal, Inc.
    Inventors: Ricardo Fulop, Michael Andrew Gibson, Richard Remo Fontana, Animesh Bose, Jonah Samuel Myerberg
  • Patent number: 10166605
    Abstract: The problem addressed by the present invention is providing a method for producing microparticles. At least two fluids to be processed, a raw material fluid that contains a raw material and a processing fluid that contains a substance for processing the raw material are mixed in a thin film fluid formed between at least two surfaces for processing that are disposed so as to face each other, that can approach and separate from each other and at least one of which rotates relative to the other, and microparticles of the raw material that is processed are obtained. At this time, the proportion of the microparticles of the raw material which has been processed that coalesces with each other is controlled by controlling the circumferential speed of the rotation in a confluence section in which the raw material fluid and processing fluid flow together.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: January 1, 2019
    Assignee: M. TECHNIQUE CO., LTD.
    Inventor: Masakazu Enomura
  • Patent number: 10158276
    Abstract: A rotor production method includes: a first step of arranging a plurality of sintered bodies side by side with an insulating lubricant applied to an interface of at least one of the sintered bodies adjacent to each other, and then housing the sintered bodies in a cavity of a molding die such that the sintered bodies are arranged side by side in the cavity, the sintered bodies being precursors of a plurality of split magnets constituting one rare-earth magnet; a second step of turning the sintered bodies into the split magnets by performing hot working to impart magnetic anisotropy to the sintered bodies arranged in the cavity, and producing an integrated magnet in which the split magnets are integrated together with the lubricant interposed therebetween; and a third step of producing a rotor of a motor by inserting the integrated magnet into a magnet slot of the rotor.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: December 18, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Osamu Yamashita
  • Patent number: 9915448
    Abstract: A heat pump includes a magnet assembly which creates a magnetic field, and a regenerator housing which includes a body defining a plurality of chambers, each of the plurality of chambers extending along a transverse direction orthogonal to the vertical direction. The heat pump further includes a plurality of stages, each of the plurality of stages including a magnetocaloric material disposed within one of the plurality of chambers and extending along the transverse direction between a first end and a second end.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: March 13, 2018
    Assignee: Haier US Appliance Solutions, Inc.
    Inventors: Michael Alexander Benedict, David G. Beers, Brian Michael Schork, Michael Goodman Schroeder
  • Patent number: 9859044
    Abstract: The powder magnetic core of the present invention can exhibit reliable superposition property in which variance rate of inductance value is small even if superposed current is varied, and can reduce the number of cores used in a reactor. The powder magnetic core comprises: soft magnetic powder particles, and gaps between the soft magnetic powder particles, in which the powder magnetic core has a density ratio of 90 to 95%, and when observing a cross section thereof, layered gaps having thicknesses of 1 to 3 ?m and widths of 20 to 200 ?m are formed inside of the powder magnetic core. It is desirable that the layered gaps be not less than 50% of all the gaps in a cross sectional area ratio.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: January 2, 2018
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Takashi Inagaki, Hiroaki Kondo, Chio Ishihara
  • Patent number: 9815742
    Abstract: An oxide ceramic having a principal component formed of a ferrite compound containing at least Sr, Co, and Fe, and zirconium in an amount of 0.05 to 1.0 wt. % on an oxide equivalent basis, and a ceramic electronic component using the oxide ceramic.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: November 14, 2017
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Sakyo Hirose, Tsuyoshi Kimura
  • Patent number: 9800095
    Abstract: Core shell nanoparticles of an iron-cobalt alloy core, a silicon dioxide shell and a metal silicate interface between the core and the shell are provided. The magnetic properties of the nanoparticles are tunable by control of the interface thickness. A magnetic core of high magnetic moment obtained by compression sintering the thermally annealed superparamagnetic core shell nanoparticles is also provided. The magnetic core has little core loss due to hysteresis or eddy current flow.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: October 24, 2017
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Michael Paul Rowe, Ryan Daniel Desautels
  • Patent number: 9734947
    Abstract: A strip cast alloy containing Nd in excess of the stoichiometry of Nd2Fe14B is subjected to HDDR treatment and diffusion treatment, yielding microcrystalline alloy powder in which major phase crystal grains with a size of 0.1-1 ?m are surrounded by Nd-rich grain boundary phase with a width of 2-10 nm. The powder is finely pulverized, compacted, and sintered, yielding a sintered magnet having a high coercivity.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: August 15, 2017
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Hajime Nakamura
  • Patent number: 9704613
    Abstract: Polymer composites that are suitable for use as electromagnetic interference mitigaters include a lossy polymeric matrix, ceramic particles dispersed within the polymeric matrix, and conductive particles dispersed within the polymeric matrix. The lossy polymeric matrix may be a fluorocarbon-based polymer matrix, or an epoxy-based polymer matrix. The ceramic particles may be metal oxide particles, especially copper oxide (CuO) particles. The conductive particles may be carbon black. Other electromagnetic interference mitigating polymer matrices include a lossy polymeric matrix and copper oxide (CuO) particles dispersed within the polymeric matrix.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: July 11, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Dipankar Ghosh, Biplab K. Roy, Nitin S. Satarkar
  • Patent number: 9666340
    Abstract: 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: Grant
    Filed: September 16, 2013
    Date of Patent: May 30, 2017
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Georg Werner Reppel, Matthias Katter
  • Patent number: 9631962
    Abstract: A flowtube assembly for a magnetic flowmeter is provided. The flowtube assembly includes a flowtube configured to receive a flow of process fluid. A magnetic core is mounted relative to the flowtube and includes a plurality of layers of a magnetically permeable material. Each layer is substantially planar and is electrically insulated from others of the plurality of layers. A coil is disposed to generate a magnetic field having field lines that are substantially orthogonal to the plane of each layer.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: April 25, 2017
    Assignee: Rosemount Inc.
    Inventors: Bruce D. Rovner, Samuel E. Messenger, Jared J. Dreier, John C. Beyl
  • Patent number: 9601249
    Abstract: The objective is to provide a soft magnetic metal powder-compact magnetic core and a reactor with an excellent DC superposition characteristic. The soft magnetic metal powder-compact magnetic core contains a soft magnetic metal powder, boron nitride and a silicon compound, when its section is ground and then observed, the ratio of the area occupied by the soft magnetic metal powder to that of the section of the soft magnetic metal powder-compact magnetic core is 90% or more and 95% or less, and a roundness of the section of 80% or more of the particles constituting the soft magnetic metal powder is 0.75 or more and 1.0 or less, and boron nitride exists in 70% or more of the voids-among-multiple-particles among the voids-among-multiple-particles in the section of the soft magnetic metal powder-compact magnetic core. Thus, the soft magnetic metal powder-compact magnetic core with an excellent DC superposition characteristic can be obtained.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: March 21, 2017
    Assignee: TDK CORPORATION
    Inventors: Yusuke Taniguchi, Tomofumi Kuroda, Yu Sakurai
  • Patent number: 9568496
    Abstract: The invention is notably directed to a scanning probe sensor for a scanning probe microscope. The scanning probe sensor comprises a probe tip having a ferromagnetic fluid and a magnetic field generator adapted to generate a magnetic field acting on the ferromagnetic fluid. Furthermore, a sensor controller is provided and configured to control one or more parameters of the magnetic field generator, thereby controlling the shape of the fluid. The invention further concerns a related scanning probe sensor, a related method and a related computer program product.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: February 14, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Bernd W. Gotsmann, Fabian Menges, Pio Peter Niraj Niramalraj
  • Patent number: 9552910
    Abstract: A ferrite magnet with salt includes 40 to 99.9 weight % of ferrite and 0.1 to 60 weight % of salt, wherein the salt has a melting point lower than a synthetic temperature of the ferrite, and the salt is melted to form a matrix between the ferrite particles, and a manufacturing thereof. The ferrite magnet with salt has advantages in terms of process conditions due to fast synthesis reaction at low temperatures compared to typical magnets, easily obtaining nano-sized particles having high crystallinity, preventing cohesion between particles and particle growth by molten salt, allowing sintering at temperatures lower than typical during the molding and sintering processes for producing a ferrite magnet with salt due to synthesized ferrite magnetic powder with salt thus preventing the deterioration of magnetic characteristics due to particle growth, and allowing alignment in the direction of magnetization easy axis to obtain higher magnetic characteristics.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: January 24, 2017
    Assignees: LG ELECTRONICS INC., INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY ERICA CAMPUS
    Inventors: Namseok Kang, Jinbae Kim, Yongho Choa, Jongyoul Kim, Gukhwan An, Sanggeun Cho
  • Patent number: 9523499
    Abstract: The disclosure provides an oxygen carrier for a chemical looping cycle, such as the chemical looping combustion of solid carbonaceous fuels, such as coal, coke, coal and biomass char, and the like. The oxygen carrier is comprised of at least 24 weight % (wt %) CuO, at least 10 wt % Fe2O3, and an inert support, and is typically a calcine. The oxygen carrier exhibits a CuO crystalline structure and an absence of iron oxide crystalline structures under XRD crystallography, and provides an improved and sustained combustion reactivity in the temperature range of 600° C.-1000° C. particularly for solid fuels such as carbon and coal.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: December 20, 2016
    Assignee: U.S. Department of Energy
    Inventors: Ranjani V. Siriwardane, Hanjing Tian
  • Patent number: 9450242
    Abstract: A method for manufacturing a nanostructured metal oxide calcinate suitable for biosensor through a procedure of redox reaction is disclosed in this invention. The nanostructured metal oxide calcinate is free of impurities and produced with better electrocatalytic activity and better conductivity. Thus, an electrode of biosensor can be modified via the nanostructured metal oxide calcinate. The method for manufacturing the nanostructured metal oxide calcinate includes: disposing a first metal material and a second metal material into a reaction slot and making the first metal material and the second metal material dissolved within a solvent to form a mixture, wherein the pH value of the mixture ranges between 0 to 7, the mixture performs a redox reaction process for obtaining a metal oxide material; and eventually calcining the metal oxide material for obtaining a nanostructured metal oxide calcinate.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: September 20, 2016
    Assignee: NATIONAL SUN YAT-SEN UNIVERSITY
    Inventors: Chun-Hu Chen, Cheng-Chi Kuo, Wen-Jie Lan
  • Patent number: 9278861
    Abstract: The invention relates to a method for the carbon coating of metallic nanoparticles. The metallic nanoparticles, which are produced using the metal-salt hydrogen-reduction method, can be coated with carbon by adding a hydrocarbon (for example, ethylene, ethane, or acetylene) to the hydrogen using in the synthesis. The carbon layer protects the metallic particles from oxidation, which greatly facilitates the handling and further processing of the particles. By altering the concentration of the hydrocarbon, it is possible, in addition, to influence the size of the metallic particles created, because the coating takes place simultaneously with the creation of the particles, thus stopping the growth process. A carbon coating at most two graphene layers thick behaves like a semiconductor. As a thicker layer, the coating is a conductor. If the hydrocarbon concentration is further increased, a metal-CNT composite material is formed in the process.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: March 8, 2016
    Inventors: Ari Auvinen, Jorma Jokiniemi, Johanna Forsman, Pipsa Mattila, Unto Tapper
  • Patent number: 9263174
    Abstract: Disclosed herein is a sintered cobalt ferrite composite material comprising of nano and micron sized powders of cobalt ferrite with high magnetostriction. The present invention further discloses preparation of nano and micron sized powders of cobalt ferrite, in particular, the auto combustion process using glycine as fuel for preparing nano sized cobalt ferrite powders.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: February 16, 2016
    Assignee: Council of Scientific and Industrial Research
    Inventors: Alias Joy Pattayil, Mohaideen Kamal Khaja
  • Patent number: 9153368
    Abstract: 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: Grant
    Filed: December 19, 2011
    Date of Patent: October 6, 2015
    Assignee: HOGANAS AB (PUBL)
    Inventors: Zhou Ye, Hanna Staffansson
  • Patent number: 9136049
    Abstract: This invention relates to Mn—Al magnetic powders of a high coercive force which are obtained from Mn—Al alloy vaporized by plasma arc discharging, and a manufacturing method thereof. The Mn—Al magnetic powders are produced by discharging a plasma arc to a compact which is formed by compacting a blend containing 20-60% by weight of Mn powder and 40-80% by weight of Al powder, collecting nanoscale Mn—Al particles after cooling the vaporized blend, and heat-treating the particles. According to the present invention, the Mn—Al magnetic powders of light weight and enhanced corrosion resistance are produced at a low cost.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: September 15, 2015
    Assignee: Korea Institute of Machinery & Materials
    Inventors: Jung-Goo Lee, Chul-Jin Choi
  • Patent number: 9053955
    Abstract: A nitride semiconductor device includes a dislocation control layer on a substrate, and a nitride semiconductor layer on the dislocation control layer. The dislocation control layer includes a nanocomposite of a first nanoparticle made of a first material and at least one second nanoparticle made of a second material.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: June 9, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Moon-sang Lee, Sung-soo Park, Dae-ho Yoon
  • Publication number: 20150144832
    Abstract: A crystalline ferromagnetic material based upon nanoscale cobalt carbide particles and a method of manufacturing the material via a polyol reaction are disclosed. The crystalline ferromagnetic cobalt carbide nanoparticles are useful for high performance permanent magnet applications. The processes are extendable to other carbide phases. 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. The materials include mixtures and/or admixtures of cobalt carbides, as both Co2C and Co3C phases. Mixtures may be a collection of independent particles of Co2C and Co3C or a collection of particles which consist of an intimate combination of Co2C and Co3C phases within individual particles. The relative proportions of these two phases and the morphology of each phase contribute to their permanent magnet properties, particularly at room temperature to over 400 K.
    Type: Application
    Filed: February 5, 2015
    Publication date: May 28, 2015
    Inventor: Vincent G. Harris
  • Publication number: 20150144831
    Abstract: Biogenic activated carbon compositions disclosed herein comprise at least 55 wt % carbon, some of which may be present as graphene, and have high surface areas, such as Iodine Numbers of greater than 2000. Some embodiments provide biogenic activated carbon that is responsive to a magnetic field. A continuous process for producing biogenic activated carbon comprises countercurrently contacting, by mechanical means, a feedstock with a vapor stream comprising an activation agent including water and/or carbon dioxide; removing vapor from the reaction zone; recycling at least some of the separated vapor stream, or a thermally treated form thereof, to an inlet of the reaction zone(s) and/or to the feedstock; and recovering solids from the reaction zone(s) as biogenic activated carbon. Methods of using the biogenic activated carbon are disclosed.
    Type: Application
    Filed: May 7, 2013
    Publication date: May 28, 2015
    Inventors: James A. Mennell, Daniel J. Despen
  • Publication number: 20150147680
    Abstract: The present invention relates to highly functional composite nanoparticles including a support body formed of nanoparticles and first phase nanoparticles which are condensed on the surfaces of the support body particles after being evaporated through a physical vapor deposition process, and to a method for producing same. According to the present invention, a physical vapor deposition process is used instead of a wet process so as to produce eco-friendly composite nanoparticles that do not emit hazardous chemicals while having high economic feasibility and process reproducibility.
    Type: Application
    Filed: March 26, 2013
    Publication date: May 28, 2015
    Inventors: Han-Shin Choi, Hye-Sook Joo, Chul-Woong Han
  • Patent number: 9039920
    Abstract: There are provided a permanent magnet and a manufacturing method thereof enabling carbon content contained in magnet particles to be reduced in advance before sintering even when wet milling is employed. Coarsely-milled magnet powder is further milled by a bead mill in a solvent together with an organometallic compound expressed with a structural formula of M-(OR)X (M represents V, Mo, Zr, Ta Ti W or Nb, R represents a substituent group consisting of a straight-chain or branched-chain hydrocarbon, X represents an arbitrary integer) so as to uniformly adhere the organometallic compound to particle surfaces of the magnet powder. Thereafter, a compact body of compacted magnet powder is held for several hours in hydrogen atmosphere at 200 through 900 degrees Celsius to perform hydrogen calcination process. Thereafter, through sintering process, a permanent magnet 1 is formed.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: May 26, 2015
    Assignee: NITTO DENKO CORPORATION
    Inventors: Izumi Ozeki, Katsuya Kume, Keisuke Hirano, Tomohiro Omure, Keisuke Taihaku, Takashi Ozaki
  • Patent number: 9040158
    Abstract: 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: Grant
    Filed: September 18, 2012
    Date of Patent: May 26, 2015
    Assignee: UChicago Argonne LLC
    Inventors: Yugang Sun, Yongxing Hu
  • Publication number: 20150137024
    Abstract: A metal-carbon nanotube composite is provided which includes a carbon nanotube, a magnetic material, and a metal and in which the carbon nanotube is bound to the magnetic material through a binding intervenor and the carbon nanotube is dispersed in the metal by binding the magnetic material to the metal. A preparing method of a metal-carbon nanotube composite is provided, the method including: a step of binding a carbon nanotube to a magnetic material through a binding intervenor; and a step of dispersing the carbon nanotube in a metal by binding the magnetic material to the metal.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 21, 2015
    Applicants: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY, JC CORP.
    Inventors: Donghyun LEE, Seungyong SON, Doo Kyoo KIM, Ki Chull SHIN
  • Publication number: 20150129794
    Abstract: In a manufacturing method of a soft magnetic member, a material powder that includes ferrous particles and an organic layer formed on a surface of each of the ferrous particles is prepared. The organic layer contains at least one element selected from the group consisting of Si, Mg, Ti, and V. The material powder is compacted to form a green compact, and the green compact is induction-heated with a frequency of 100 kHz or higher to form an insulation layer made of an oxide containing the element on the surface of each of the ferrous particles.
    Type: Application
    Filed: November 6, 2014
    Publication date: May 14, 2015
    Inventors: Eiichi KOBAYASHI, Kunihiro KODAMA, Masashi TOTOKAWA, Satoshi TAKEUCHI
  • Patent number: 9028705
    Abstract: 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: Grant
    Filed: May 31, 2012
    Date of Patent: May 12, 2015
    Assignee: Magnequench Limited
    Inventors: Zhao Wei, Han Zhisan, David Miller
  • Publication number: 20150123025
    Abstract: What is described is the use of alcohols, alcoholamines, diols, polyols or mixtures thereof in heat carrier media or as heat carrier media which are in contact with magnetocaloric materials.
    Type: Application
    Filed: December 18, 2014
    Publication date: May 7, 2015
    Inventors: Fabian Seeler, Georg Degen
  • Patent number: 9023230
    Abstract: The present invention relates facile method to synthesize magnetic PNCs with highly dispersed and narrow size distributed NPs. The PNCs have highly thermal stability and unique electrical and dielectric properties.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: May 5, 2015
    Assignees: Lamar University, A Component of the Texas State University System, An Agency of the State of Texas, Texas State University San Marcos, A Component of the Texas State University System, An Agency of the State of Texas
    Inventors: Luyi Sun, Zhanhu Guo, Jiahua Zhu, Suying Wei
  • Publication number: 20150115193
    Abstract: The present invention related to ferromagnetic nano-metal powders and more particularly, to ferromagnetic nano-metal powders for increasing packing density by decreasing the porosity between micro-sized soft magnetic metal powders. According to an embodiment of the present invention, the ferromagnetic nano-metal powder allows high packing density and high magnetic property at a high frequency to fill the pores inevitably generated during the manufacturing process of an inductor using the soft magnetic metal powders.
    Type: Application
    Filed: March 27, 2014
    Publication date: April 30, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Yeong KIM, Sung-Yong AN, Hak-Kwan KIM, Jung-Wook SEO
  • Publication number: 20150118407
    Abstract: A soft magnetic material comprises a plurality of iron-containing particles and an insulating layer on the iron-containing particles, the insulating layer comprising an oxide. The soft magnetic material is an aggregate of permeable micro-domains separated by insulation boundaries.
    Type: Application
    Filed: September 30, 2014
    Publication date: April 30, 2015
    Inventors: Martin Hosek, Sripati Sah, Jayaraman Krishnasamy
  • Patent number: 9017570
    Abstract: 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: Grant
    Filed: July 24, 2012
    Date of Patent: April 28, 2015
    Assignee: Hyundai Motor Company
    Inventors: Jin Woo Kwak, Kyong Hwa Song, Han Saem Lee, Byung Sam Choi
  • Publication number: 20150108391
    Abstract: Various embodiments of the present disclosure pertain to methods of making magnetic carbon nanoribbons. Such methods generally include: (1) forming carbon nanoribbons by splitting carbon nanomaterials; and (2) associating graphene nanoribbons with magnetic materials, precursors of magnetic materials, or combinations thereof. Further embodiments of the present disclosure also include a step of reducing the precursors of magnetic materials to magnetic materials. In various embodiments, the associating occurs before, during or after the splitting of the carbon nanomaterials. In some embodiments, the methods of the present disclosure further comprise a step of (3) functionalizing the carbon nanoribbons with functionalizing agents. In more specific embodiments, the functionalizing occurs in situ during the splitting of carbon nanomaterials. In further embodiments, the carbon nanoribbons are edge-functionalized.
    Type: Application
    Filed: January 28, 2013
    Publication date: April 23, 2015
    Applicants: M-I L.L.C., William Marsh Rice University
    Inventors: James M. Tour, Bostjan Genorio, Wei Lu, Brandi Katherine Price-Hoelscher
  • Publication number: 20150108392
    Abstract: In magnetic parts such as inductors and antennas using magnetic metal powder, the complex component of a magnetic permeability, which represents a loss in a GHz band, has been high. A magnetic part formed from a soft magnetic metal powder including iron as a main component can reduce a loss factor in a kHz to GHz band. The soft magnetic metal powder has an average particle diameter of 100 nm or less, an axial ratio (=major axis length/minor axis length) of 1.5 or more, a coercive force (Hc) of 39.8 to 198.9 kA/m (500 to 2500 Oe), and a saturation magnetization of 100 Am2/kg or more.
    Type: Application
    Filed: May 7, 2013
    Publication date: April 23, 2015
    Applicant: DOWA Electronics Material Co., Ltd.
    Inventors: Masahiro Gotoh, Takayuki Yoshida, Kazumasa Ikari
  • Publication number: 20150105262
    Abstract: The invention provides the Magnetoelectric Effect Material consisted of a single isotope, the alloy of isotopes, or the compound of isotopes. The invention applies enrichment and purification to increase the isotope abundance, to create the density of nuclear exciton by irradiation, and therefore increase the magnetoelectric effect of the crystal of single isotope, the alloy crystal of isotopes and the compound crystal of isotopes. The invention provides the manufacturing method including the selection rules of isotopes, the fabrication processes and the structure of composite materials. The invention belongs to the area of the nuclear science and the improvement of material character. The invention using the transition of entangled multiple photons to achieve the delocalized nuclear exciton. The mix of selected isotopes adjusts the decay lifetime of nuclear exciton and the irradiation efficiency to generate the nuclear exciton.
    Type: Application
    Filed: February 3, 2012
    Publication date: April 16, 2015
    Inventor: Yao Cheng
  • Patent number: 9005374
    Abstract: There are provided a permanent magnet and a manufacturing method thereof capable of decreasing an activity level of a calcined body activated by a calcination process. To fine powder of milled neodymium magnet is added an organometallic compound solution containing an organometallic compound expressed with a structural formula of M-(OR)x (M represents V, Mo, Zr, Ta, Ti, W or Nb, R represents a substituent group consisting of a straight-chain or branched-chain hydrocarbon, x represents an arbitrary integer) so as to uniformly adhere the organometallic compound to particle surfaces of the neodymium magnet powder. Thereafter, desiccated magnet powder is held for several hours in hydrogen atmosphere at 200 through 900 degrees Celsius. Thereafter, the powdery calcined body calcined through the calcination process in hydrogen is held for several hours in vacuum atmosphere at 200 through 600 degrees Celsius for a dehydrogenation process.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: April 14, 2015
    Assignee: Nitto Denko Corporation
    Inventors: Izumi Ozeki, Katsuya Kume, Keisuke Hirano, Tomohiro Omure, Keisuke Taihaku, Takashi Ozaki
  • Publication number: 20150083960
    Abstract: A magnetic body constituted by magnetic grains bonded together via oxide film, which magnetic grains contain a Fe—Si-M soft magnetic alloy (where M is a metal element more easily oxidized than Fe) that contains sulfur atoms (S). The magnetic body preferably contains 0.004 to 0.012 percent by weight of S, 1.5 to 7.5 percent by weight of Si, and 2 to 8 percent by weight of metal M.
    Type: Application
    Filed: September 19, 2014
    Publication date: March 26, 2015
    Inventors: Atsushi TANADA, Kiyoshi TANAKA
  • Publication number: 20150069285
    Abstract: The invention is directed to the production of metal-carbon containing bodies, which process comprises impregnating cellulose, cellulose-like or carbohydrate bodies with an aqueous solution of at least one metal compound, followed by heating the impregnated bodies in an inert and substantially oxygen-free atmosphere, thereby reducing at least part of the at least one metal compound to the corresponding metal or metal alloy.
    Type: Application
    Filed: November 19, 2014
    Publication date: March 12, 2015
    Applicant: BASF Corporation
    Inventors: Jacobus Hoekstra, John Wilhelm Geus, Leonardus Wijnand Jenneskens, Dirk van de Kleut, Edward Jan Vlietstra
  • Patent number: 8968590
    Abstract: 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: Grant
    Filed: September 10, 2010
    Date of Patent: March 3, 2015
    Assignee: Northeastern University
    Inventor: Vincent G. Harris
  • Publication number: 20150034856
    Abstract: At least one elongated core, made of at least one first magnetizable and/or magnetic material, and a shell, surrounding the core and made of at least one second magnetocrystalline anisotropic material, form a nanoparticle. A plurality of such nanoparticles are used in making a permanent magnet. A motor or a generator includes at least one such permanent magnet.
    Type: Application
    Filed: February 11, 2013
    Publication date: February 5, 2015
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Gotthard Rieger
  • Publication number: 20150037818
    Abstract: Magnetic-optical iron oxide-gold core-shell nanoparticles are disclosed. Methods for making and using the nanoparticles are also disclosed.
    Type: Application
    Filed: July 1, 2014
    Publication date: February 5, 2015
    Applicant: UNIVERSITY OF MEMPHIS RESEARCH FOUNDATION
    Inventors: Xiaohua Huang, Saheel Bhana
  • Publication number: 20150033763
    Abstract: A composite material for magnetic refrigeration is provided. The composite material for magnetic refrigeration includes a magnetocaloric effect material having a magnetocaloric effect; and a heat conductive material dispersed in the magnetocaloric effect material. The heat conductive material is at least one selected from the group consisting of a carbon nanotube and a carbon nanofiber.
    Type: Application
    Filed: September 30, 2014
    Publication date: February 5, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Akiko SAITO, Norihiro TOMIMATSU, Tadahiko KOBAYASHI, Shiori KAJI, Ryosuke YAGI
  • Patent number: 8945393
    Abstract: Method for oil removal. The method includes adding a magnetizable material, with or without appropriately selected surfactants, of order micron (having no net magnetization) or nanometer size to magnetize the oil or water phase by either making a ferrofluid, magnetorheological fluid, a magnetic Pickering emulsion (oil in water or water in oil emulsion), or any other process to magnetize either oil or water phases. The magnetized fluid is separated from the non-magnetic phase using novel or existing magnetic separation techniques or by permanent magnets or electromagnets thereby separating oil and water phases. The magnetized particles are separated from the magnetized phase using novel or existing magnetic separation techniques to recover and reuse the particles. The two magnetic separation steps can be repeated to further increase recovery efficiency of the liquid phases and the magnetizable particles reused in this continuous process.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: February 3, 2015
    Assignee: Massachusetts Institute of Technology
    Inventors: Markus Zahn, T. Alan Hatton, Shahriar Rohinton Khushrushahi
  • Patent number: 8945503
    Abstract: A method of forming CuFeS2 chalcopyrite nanoparticles. The method includes, in the presence of one or more ligands, reacting an iron-containing compound, a copper-containing compound and a sulfur-containing compound to form CuFeS2 chalcopyrite nanoparticles; and wherein at least one of the ligands forms a coordination complex with copper, and at least one of the ligands forms a coordination complex with iron. Also a method of forming metal-doped CuFeS2 chalcopyrite nanoparticles such as Zn-doped CuFeS2 chalcopyrite nanoparticles. Also, a CuFeS2 chalcopyrite nanoparticle layer on a substrate. Also, a composition of matter including Zn-doped CuFeS2 chalcopyrite nanoparticles. Also, a Zn-doped CuFeS2 chalcopyrite nanoparticle layer on a substrate.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: February 3, 2015
    Assignees: International Business Machines Corporation, King Abdulaziz City for Science and Technology
    Inventors: Xin Ai, Abdulaziz Bagabas, Mohammed Bahattab, John D. Bass, Robert D. Miller, John Campbell Scott, Qing Song
  • Patent number: 8945417
    Abstract: What is described is the use of alcohols, alcoholamines, diols, polyols or mixtures thereof in heat carrier media or as heat carrier media which are in contact with magnetocaloric materials.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: February 3, 2015
    Assignee: BASF SE
    Inventors: Fabian Seeler, Georg Degen
  • Publication number: 20150021512
    Abstract: A soft magnetic powder core which can have a high electrical resistivity, a high magnetic flux density and a high strength easily, and the soft magnetic powder core can be used in various electromagnetic components such as a motor, an actuator, a generator and a reactor. The soft magnetic powder core in which the glass portion is scattered among the soft magnetic particles, the soft magnetic particle having the core particle with iron as the main component and the insulating coating layer containing P, O and Fe. Further, the junction portion with iron oxide as the main component is formed between the soft magnetic particle and the glass portion.
    Type: Application
    Filed: February 4, 2013
    Publication date: January 22, 2015
    Inventors: Takeshi Takahashi, Seigo Tokoro, Seiichi Kikuchi, Kenichi Nishikawa
  • Publication number: 20150024236
    Abstract: A soft magnetic exchange-coupled composite structure, and a high-frequency device component, an antenna module, and a magnetoresistive device including the soft magnetic exchange-coupled composite structure, include a ferrite crystal grain as a main phase and a soft magnetic metal thin film bound to the ferrite crystal grain by interfacial bonding on an atomic scale. A region of the soft magnetic metal thin film adjacent to an interface with the ferrite crystal grain includes a crystalline soft magnetic metal.
    Type: Application
    Filed: January 2, 2014
    Publication date: January 22, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-min KANG, Kyung-han AHN, Young-jae KANG, Sang-mock LEE