Core (e.g., Compressed Powder) Patents (Class 336/233)
  • Patent number: 11170934
    Abstract: A method is provided for the production of a wound nanocrystalline magnetic core in which a nanocrystalline metal strip made of (Fe1-aMa)100-x-y-z-?-?CuxSiyBzM??X? is pre-wound to form a first coil. An insulating foil is provided that is coated with an adhesive on at least one side. An adhesive is applied to the nanocrystalline metal strip to laminate the insulating foil onto the metal strip and thereby to stabilise the metal strip as it is wound off the coil. The laminated nanocrystalline metal strip and the insulating foil are bifilar wound to form a bifilar, layer-insulated coil.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: November 9, 2021
    Assignee: VACUUMSCHMELZE GMBH & CO. KG
    Inventors: Jörg Petzold, Oliver Friedrich, Volker Kleespies, Johannes Binkofski
  • Patent number: 11145448
    Abstract: A soft magnetic alloy powder includes a plurality of soft magnetic alloy particles of a soft magnetic alloy represented by a composition formula (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e))MaBbPcSidCe, wherein X1 represents Co and/or Ni; X2 represents at least one selected from the group consisting of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements; M represents at least one selected from the group consisting of Nb, Hf, Zr, Ta, Mo, W, and V; 0.020?a?0.14, 0.020<b?0.20, 0<c?0.15, 0?d?0.060, 0?e?0.040, ??0, ??0, and 0??+??0.50 are satisfied, and wherein the soft magnetic alloy has a nano-heterostructure with initial fine crystals present in an amorphous substance; and the surface of each of the soft magnetic alloy particles is covered with a coating portion including a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: October 12, 2021
    Assignee: TDK CORPORATION
    Inventors: Masakazu Hosono, Kenji Horino, Hiroyuki Matsumoto, Kazuhiro Yoshidome, Akito Hasegawa, Hajime Amano, Isao Nakahata
  • Patent number: 11114226
    Abstract: A magnetic iron alloy and process of making the same. The alloy includes iron, approximately 2 wt. % to approximately 8 wt. % cobalt, approximately 0.05 wt. % to approximately 5 wt. % manganese, and approximately 0.05 wt. % to approximately 5 wt. % silicon. The alloy may also include up to approximately 0.3 wt. % chromium, up to approximately 2 wt. % vanadium, up to approximately 1 wt. % nickel, up to approximately 0.05 wt. % niobium, and up to approximately 0.02 wt. % carbon.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: September 7, 2021
    Assignee: CARPENTER TECHNOLOGY CORPORATION
    Inventors: Tanjore V. Jayaraman, Chins Chinnasamy, Samuel Kernion, Eric Fitterling
  • Patent number: 10854383
    Abstract: A coil electrode component includes a body including magnetic metal material, a coil disposed in the body and having first and second lead parts respectively outwardly exposed through first and second surfaces of the body. A first plating electrode is formed on the first surface of the body and a further surface of the body connected to and extended from the first surface of the body, and connected to the first lead part. A second plating electrode is formed on the second surface of the body and a further surface of the body connected to and extended from the second surface of the body, and connected to the second lead part.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: December 1, 2020
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Min Sung Choi
  • Patent number: 10796828
    Abstract: A coil component includes a magnetic portion that includes metal particles and a resin material, a coil conductor embedded in the magnetic portion, and outer electrodes electrically connected to the coil conductor. The average particle diameter of the metal particles in the magnetic portion is 1 ?m or more and 5 ?m or less, and the CV value of the metal particles is 50% or more and 90% or less.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: October 6, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takuya Ishida, Gota Shinohara
  • Patent number: 10638558
    Abstract: An apparatus for simultaneously heating a plurality of food products, comprising: a containment structure forming a housing chamber; one or more separating elements mounted in the housing chamber to delimit a plurality of separate housing compartments for receiving the food products; radio frequency dielectric heating means with an operating frequency of between 1 MHz and 300 MHz, mounted in the containment structure and comprising at least one first electrode and one second electrode; wherein the housing compartments are aligned along a row, the first electrode and the second electrode delimiting on two opposite sides the row; and wherein inside the housing chamber, between the first electrode and the second electrode, there is also at least one inductor.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: April 28, 2020
    Assignee: ILLINOIS TOOL WORKS, INC.
    Inventors: Michele Sclocchi, Christine Rollet, Marco Carcano, Marco Bullo, Francesco Gambato
  • Patent number: 10622129
    Abstract: A magnetic material has: multiple soft magnetic alloy grains that contain Fe, element L (where element L is Si, Zr, or Ti), and element M (where element M is not Si, Zr, or Ti, and oxidizes more easily than Fe); a first oxide film that contains element L and covers each of the multiple soft magnetic alloy grains; a second oxide film that contains element M and covers the first oxide film; a third oxide film that contains element L and covers the second oxide film; a fourth oxide film that contains Fe and covers the third oxide film; and bonds that are constituted by parts of the fourth oxide film and that bond the multiple soft magnetic alloy grains together.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: April 14, 2020
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Yoko Orimo, Xinyu Li, Shinsuke Takeoka, Chengli He, Kenji Otake
  • Patent number: 10593449
    Abstract: Embodiments are directed to a method of forming a laminated magnetic inductor and resulting structures having multiple magnetic layer thicknesses. A first magnetic stack having one or more magnetic layers alternating with one or more insulating layers is formed in a first inner region of the laminated magnetic inductor. A second magnetic stack is formed opposite a major surface of the first magnetic stack in an outer region of the laminated magnetic inductor. A third magnetic stack is formed opposite a major surface of the second magnetic stack in a second inner region of the laminated magnetic inductor. The magnetic layers are formed such that a thickness of a magnetic layer in each of the first and third magnetic stacks is less than a thickness of a magnetic layer in the second magnetic stack.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 17, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hariklia Deligianni, Bruce B. Doris, Eugene J. O'Sullivan, Naigang Wang
  • Patent number: 10573451
    Abstract: In accordance with an exemplary embodiment, a power inductor includes a body, a base disposed in the body, and a coil pattern disposed on at least one surface of the base, in which the body includes metal powder, a polymer, and a thermal conductive filler and the base is formed by bonding a copper foil to both surfaces of a metal plate comprising iron.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: February 25, 2020
    Assignee: MODA-INNOCHIPS CO., LTD.
    Inventors: In Kil Park, Tae Hyung Noh, Gyeong Tae Kim, Seung Hun Cho, Jun Ho Jung, Ki Joung Nam, Jung Gyu Lee
  • Patent number: 10544488
    Abstract: In some embodiments, a magnetic body 1 has soft magnetic alloy grains 11 that contain Fe, M (M is a metal element that oxidizes more easily than Fe), and S, as well as oxide films 12 produced by partial oxidization of the soft magnetic alloy grains 11, wherein the magnetic body 1 has its adjacent soft magnetic alloy grains 11 bonded together at least partially through the oxide films 12, and contains Fe by 92.5 to 96 percent by weight and S by 0.003 to 0.02 percent by weight. The magnetic body can have high levels of both magnetic permeability and volume resistivity, to meet the demand for smaller, higher-performance electronic components.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: January 28, 2020
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Atsushi Tanada, Kenji Takashima, Yoko Orimo
  • Patent number: 10490327
    Abstract: A coil component includes a magnetic portion that includes metal particles and a resin material, a coil conductor embedded in the magnetic portion, and outer electrodes electrically connected to the coil conductor. The average particle diameter of the metal particles in the magnetic portion is 1 ?m or more and 5 ?m or less, and the CV value of the metal particles is 50% or more and 90% or less.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: November 26, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takuya Ishida, Gota Shinohara
  • Patent number: 10186358
    Abstract: Provided are: a metal powder core having a configuration suitable for core loss reduction and strength improvement; a coil component employing this; and a fabrication method for metal powder core. The metal powder core is obtained by dispersing Cu powder among soft magnetic material powder comprising pulverized powder of Fe-based soft magnetic alloy and atomized powder of Fe-based soft magnetic alloy and then by performing compaction. The fabrication method for metal powder core includes: a mixing step of mixing together soft magnetic material powder containing thin-leaf shaped pulverized powder of Fe-based soft magnetic alloy and atomized powder of Fe-based soft magnetic alloy, Cu powder, and a binder and thereby obtaining a mixture; a forming step of performing pressure forming on the mixture obtained at the mixing step; and a heat treatment step of annealing a formed article obtained at the forming step.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: January 22, 2019
    Assignee: Hitachi Metals, Ltd.
    Inventors: Tetsuro Kato, Shin Noguchi, Kazunori Nishimura
  • Patent number: 10157708
    Abstract: The present disclosure provides a wrapping method for the common inductor. The common mode inductor includes a first coil winding and a second coil winding. The wrapping method for a common mode inductor includes steps of: disposing two isolation blocking sheets at different positions of a magnetic core; wrapping the first coil winding around the magnetic core, wherein the first coil winding is divided into two wrapping areas by one of the isolation blocking sheets; wrapping the second coil winding around the magnetic core, wherein the second coil winding is divided into two wrapping areas by the other one of the isolation blocking sheets, wherein the first coil winding and the second coil winding are symmetrically wrapped.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: December 18, 2018
    Assignee: Delta Electronics (Jiangsu) Ltd.
    Inventor: Tangqian Cheng
  • Patent number: 10153082
    Abstract: An electronic component includes a composite body made of a composite material of a resin material and a metal powder; and a metal film disposed on an outer surface of the composite body. The metal film is in contact with the resin material and the metal powder of the composite body, and an average particle diameter of crystals of the metal film contacting the resin material is 60% or more and 120% or less of an average particle diameter of crystals of the metal film contacting the metal powder.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: December 11, 2018
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shinji Otani, Masaki Tsutsumi, Yoshinori Ueda, Hayami Kudo
  • Patent number: 9961985
    Abstract: A case for a powered toothbrush comprises a housing having an interior for receiving a powered toothbrush, and a cover, wherein the cover substantially obfuscates the interior but is sufficiently light-transmissive to communicate the presence of an indicator from within the interior. Also provided is a powered toothbrush and case system.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: May 8, 2018
    Assignee: Colgate-Palmolive Company
    Inventors: Takashi Shigeno, Kazuya Andachi, Tamaki Ito
  • Patent number: 9953753
    Abstract: An electronic component includes a magnetic body having internal coil patterns. The magnetic body includes a core part including the internal coil patterns; and upper and lower cover parts disposed above and below the core part, respectively. Magnetic wires are disposed in the core part, and magnetic plates are disposed in the upper and lower cover parts.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: April 24, 2018
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Byeong Cheol Moon
  • Patent number: 9907184
    Abstract: A power supply module and its manufacturing method are disclosed. The manufacturing method for the power supply module includes: configuring a coil such that coil terminals are configured by way of electrical connection in the preset circuit connection configuration of the connector; preparing a mold cavity, and placing the connector housed with the coil and the electronic components into the mold cavity; making a magnetic mixture, and filling the mold cavity where the connector is placed with the magnetic mixture to form a magnetic body under pressure, wherein the magnetic body encapsulates at least the coil, the electronic components and a portion of the connector adapted to house the coil and the electronic components, and the terminal is exposed outside the magnetic body; demolding the magnetic body from the mold cavity; and increasing the temperature of the demolded magnetic body by heating.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: February 27, 2018
    Assignee: SUMIDA ELECTRIC (H.K.) COMPANY LIMITED
    Inventors: Hongnian Zhang, Yanfei Liu, Douglas James Malcolm
  • Patent number: 9852842
    Abstract: A coil electronic component includes a body having a coil part disposed therein and external electrodes connected to the coil part. The body includes a plurality of magnetic particles. In one example, a particle size distribution D50 of the magnetic particles in the body is 1 ?m or less. In other examples, a particle size distribution D99 of the magnetic particles in the body is 1 ?m or less; a particle size distribution ratio D99/D50 of the magnetic particles in the body is 1.5 or less; and/or a variation coefficient of the particle size of the magnetic particles in the body is 20% or less.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: December 26, 2017
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Il Jin Park, Se Hyung Lee, Byeong Cheol Moon
  • Patent number: 9812237
    Abstract: Soft magnetic core, in which permeabilities that occur at least two different locations of the core are different.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: November 7, 2017
    Assignee: VACUUMSCHMELZE GMBH & CO. KG
    Inventors: Jivan Kapoor, Christian Polak
  • Patent number: 9620858
    Abstract: A compact random media size antenna employing random magnetic and dielectrics nm to mm range size particles in polymer hosts is used to transfer E & M oscillations in 1 kHz to 900 Mhz range using a 1 cm to 1 meter length antenna. This is achieved by using small size particles and a random mean path length of E & M wavefront travel in and about a core tube of effective length matching Leff=L2/2ltr, equivalent to ?/2 for transmitting and receiving E & M radiation, where L is the physical size of the antenna, ltris the transport scattering random walk length between particles and ? is the frequency wavelength.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: April 11, 2017
    Inventor: Robert R. Alfano
  • Patent number: 9595379
    Abstract: A cooling device for a transformer, capable of reducing heat generation from windings and a core, is provided. The cooling device for the transformer includes a primary winding and a second winding wound around a center part of the core and separated from each other. A heat-dissipating panel for releasing heat generated from the core, the primary winding, and the secondary winding to the exterior using heat conductance is inserted between the primary winding and the secondary winding. In addition, the heat-dissipating panel is configured to release heat using exposed edges of the primary winding and the secondary winding.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: March 14, 2017
    Assignee: Hyundai Motor Company
    Inventors: In Yong Yeo, Byeong Seob Song, Dae Woo Lee, Jin Young Yang, Woo Young Lee
  • Patent number: 9466994
    Abstract: A mobile terminal power receiving module 1 which is housed together with a rechargeable battery 3 in a rechargeable battery pack 2 in a mobile terminal such as a smart phone 5, includes a sheet coil 13 in which a coil 12 constituted by conductors is formed on a flexible circuit board 11 as a circuit pattern and a magnetic sheet 14 made of resin in which magnetic powder is dispersed.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: October 11, 2016
    Assignee: NITTO DENKO CORPORATION
    Inventors: Hiroshi Yamazaki, Kojiro Kameyama, Eiji Toyoda, Hajime Sunahara
  • Patent number: 9440542
    Abstract: A reactor includes a coil formed by connecting a pair of coil elements configured by a wound wire, and magnetic core. The reactor for an on-vehicle converter converts an input voltage. Electricity applying conditions include a maximum DC current of 100 A or higher and 1000 A or lower, an average voltage of 100 V or higher and 1000 V or smaller, and a usable frequency of 5 kHz or higher and 100 kHz or smaller. The magnetic core is obtained by combining a plurality of divided core pieces without a gap provided. All the divided core pieces are made of hardened compact obtained by hardening resin of composite material containing magnetic powder and the resin. A distance between an inner peripheral surface of the coil element and an outer peripheral surface of the magnetic core opposite to the inner peripheral surface is 0.1 mm or more and 2 mm or less.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: September 13, 2016
    Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., AUTONETWORKS TECHNOLOGIES, LTD.
    Inventors: Kazuhiro Inaba, Shinichiro Yamamoto
  • Patent number: 9287026
    Abstract: An object is to provide a magnetic material and coil component offering improved magnetic permeability and insulation resistance, while also offering improved high-temperature load, moisture resistance, water absorbency, and other reliability characteristics at the same time. A magnetic material that has multiple metal grains constituted by Fe—Si-M soft magnetic alloy (where M is a metal element that oxidizes more easily than Fe), as well as oxide film constituted by an oxide of the soft magnetic alloy and formed on the surface of the metal grains, wherein the magnetic material has bonding parts where adjacent metal grains are bonded together via the oxide film formed on their surface, as well as bonding parts where metal grains are directly bonded together in areas having no oxide film, and resin material is filled in at least some of the voids generating as a result of accumulation of the metal grains.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: March 15, 2016
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hitoshi Matsuura, Masahiro Hachiya, Kenji Otake
  • Patent number: 9165705
    Abstract: A laminated inductor having an internal conductor forming region, as well as a top cover region and bottom cover region formed in a manner sandwiching the internal conductor forming region between top and bottom; wherein the internal conductor forming region has a magnetic part formed with soft magnetic alloy grains, as well as helical internal conductor embedded in the magnetic part; and at least one of the top cover region and bottom cover region (or preferably both) is/are formed with soft magnetic alloy grains whose average grain size is greater than that of grains in the internal conductor forming region including the soft magnetic alloy grains constituting the magnetic part.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: October 20, 2015
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Hitoshi Matsuura, Takayuki Arai, Kenji Otake
  • Patent number: 9030287
    Abstract: A filter body of a common mode noise filter includes: a non-magnetic body; a first magnetic body and a second magnetic body sandwiching the non-magnetic body; and a first coil conductor and a second coil conductor of planar shape which are embedded in the non-magnetic body and positioned on the first magnetic body side and second magnetic body side in the non-magnetic body in a manner facing each other in a non-contact state; and also has a non-magnetic first protective part and second protective part which are made of a non-magnetic material whose strength is higher than the first magnetic body and second magnetic body and which are positioned on the outermost side of the filter body in a manner sandwiching the first magnetic body and second magnetic body.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: May 12, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yoshiyuki Motomiya, Koji Taketomi, Kenichiro Nogi, Takumi Takahashi, Katsuyuki Kayahara
  • Publication number: 20150123761
    Abstract: A rod-shaped magnetic core element, having a first end with a spherical or cylindrical recess or a spherical or cylindrical connecting protrusion, and a second end with a spherical or cylindrical recess or a spherical or cylindrical connecting protrusion so that a bent connection of at least two magnetic core elements is variably adjustable. Magnetic core elements comprising spherical or cylindrical magnetic core ends of this type allow a nearly gap-free construction with little magnetic leakage due to slightly larger end surfaces in comparison with ferrite rods having beveled plane end section surfaces. The enlarged end surface of the spherical surface advantageously allows a more stable connection of individual magnetic core elements without adhesive bonding. This allows the construction of flexible, multiple-member and inexpensive rod core coils and antennae.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventor: Johann WINKLER
  • Publication number: 20150115766
    Abstract: It is an objective of the invention to provide a dust core made of an Fe-based amorphous metal powder having excellent magnetic properties, in which the dust core has a higher-than-conventional density, excellent magnetic properties and a high mechanical strength. There is provided a dust core including a mixture powder compacted, the mixture powder including: an Fe-based amorphous metal powder having a crystallization temperature Tx (unit: K), the Fe-based amorphous metal powder being plastically deformed, the plastically deformed metal Fe-based amorphous metal powder having a filling factor in the dust core higher than 80% and not higher than 99%; and a resin binder having a melting point Tm (unit: K), in which the Tx and Tm satisfy a relationship of “Tm/Tx?0.70”.
    Type: Application
    Filed: October 23, 2014
    Publication date: April 30, 2015
    Inventors: Masami TAGUCHI, Shigeho TANIGAWA, Shin NOGUCHI
  • Publication number: 20150104664
    Abstract: In a magnetic component, such as an inductor and an antenna, produced with a metal magnetic powder, a complex number component of magnetic permeability that is a loss in the GHz band was high. A magnetic component obtained by molding a soft magnetic metal powder can have a reduced loss factor in the GHz band. The soft magnetic metal powder is characterized by containing iron as a main ingredient, and having an average particle size of not larger than 300 nm, a coercive force (Hc) of 16 to 119 kA/m (200 to 1500 Oe), a saturation magnetization of not less than 90 Am2/kg, and a volume resistivity of not less than 1.0×101 ?·cm. The volume resistivity is determined by measuring, by a four probe method, a molded body formed by vertically pressurizing 1.0 g of the metal powder at 64 MPa (20 kN).
    Type: Application
    Filed: March 13, 2013
    Publication date: April 16, 2015
    Inventors: Kazumasa Ikari, Masahiro Gotoh, Takayuki Yoshida
  • Patent number: 9007159
    Abstract: A coil-type electronic component having a coil inside or on the surface of a base material is characterized in that the base material of the coil-type electronic component is constituted by a group of soft magnetic alloy grains inter-bonded via oxide layers, multiple crystal grains are present in each soft magnetic alloy grain, and the oxide layers preferably have a two-layer structure whose outer layer is thicker than the inner layer.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: April 14, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Masahiro Hachiya, Atsushi Tanada, Kenji Otake, Kiyoshi Tanaka, Tetsuyuki Suzuki
  • Patent number: 9000879
    Abstract: An electronic device comprising a first magnetic powder; a second magnetic powder, wherein the mean particle diameter of the first magnetic powder is larger than the mean particle diameter of the second magnetic powder, the Vicker's Hardness of the first magnetic powder is greater than the Vicker's Hardness of the second magnetic powder by a first hardness difference, and the first magnetic powder mixes with the second magnetic powder; and a conducting wire buried in the mixture of the first magnetic powder and the second magnetic powder; wherein by means of the first hardness difference of the first magnetic powder and the second magnetic powder, the mixture of the first magnetic powder and the second magnetic powder and the conducting wire buried therein are combined to form an integral magnetic body at a temperature lower than the melting point of the conducting wire.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: April 7, 2015
    Assignee: CYNTEC Co., Ltd.
    Inventors: Wen-Hsiung Liao, Roger Hsieh, Hideo Ikuta, Yueh-Lang Chen
  • Publication number: 20150077210
    Abstract: This disclosure provides a ferrite ceramic composition, a ceramic electronic component including the ceramic composition, and a process of producing a ceramic electronic component including the ferrite ceramic composition, of which the insulation performance can be secured even when fired simultaneously with a metal wire material containing Cu as the main component, and which can have good electric properties. The ferrite ceramic composition includes an Ni—Mn—Zn-based ferrite having a molar content of CuO of 5 mol % or less and in which, when the molar content (x) of Fe2O3 and the molar content (y) of Mn2O3 are expressed by a coordinate point (x,y), the coordinate point (x,y) is located in an area bounded by coordinate points A (25,1), B (47,1), C (47,7.5), D (45,7.5), E (45,10), F (35,10), G (35,7.5) and H (25,7.5).
    Type: Application
    Filed: November 21, 2014
    Publication date: March 19, 2015
    Applicant: MURATA MANUFACTURING CO., LTD.
    Inventors: Tomoyuki ANKYU, Atsushi YAMAMOTO, Yuko NOMIYA, Wataru KANAMI
  • Patent number: 8975997
    Abstract: In a planar coil element, the quantitative ratio of inclined particles to total particles of a first metal magnetic powder contained in a metal magnetic powder-containing resin provided in a through hole of a coil unit is higher than the quantitative ratio of inclined particles to total particles of the first metal magnetic powder contained in the metal magnetic powder-containing resin provided in other than the through hole, and many of particles of the first metal magnetic powder in the magnetic core are inclined particles whose major axes are inclined with respect to the thickness direction and the planar direction of a substrate. Therefore, the planar coil element has improved strength as compared to a planar coil element shown in FIG. 9A and has improved magnetic permeability as compared to a planar coil element shown in FIG. 9B.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: March 10, 2015
    Assignee: TDK Corporation
    Inventors: Kyohei Tonoyama, Makoto Morita, Tomokazu Ito, Hitoshi Ohkubo, Manabu Ohta, Yoshihiro Maeda, Yuuya Kaname, Hideharu Moro
  • Publication number: 20150061593
    Abstract: A coil unit for an electric vehicle for the inductive transfer of electrical energy between the coil unit and a stationary charging station. The coil unit includes at least one coil and a flux guide unit for guiding a magnetic flux occurring during operation of the coil. Also disclosed is an electric vehicle having a coil unit for the inductive transfer of electrical energy between a secondary coil of the coil unit and a primary coil of a charging station. The disclosed coil solves the problem of allowing the safe use of the inductive electrical energy transfer in electric vehicles, in particular motor vehicles, by proposing a coil unit, in which the flux guide unit has material weakenings, and an electric vehicle having such a coil unit.
    Type: Application
    Filed: February 1, 2013
    Publication date: March 5, 2015
    Inventors: Mathias Wechlin, Pascal Asselin, Andrew Green
  • Patent number: 8952776
    Abstract: A multi-phase coupled inductor includes a powder core material magnetic core and first, second, third, and fourth terminals. The coupled inductor further includes a first winding at least partially embedded in the core and a second winding at least partially embedded in the core. The first winding is electrically coupled between the first and second terminals, and the second winding electrically is coupled between the third and fourth terminals. The second winding is at least partially physically separated from the first winding within the magnetic core. The multi-phase coupled inductor is, for example, used in a power supply.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: February 10, 2015
    Assignee: Volterra Semiconductor Corporation
    Inventor: Alexandr Ikriannikov
  • Publication number: 20150015359
    Abstract: Disclosed herein are a soft magnetic composite including an insulating layer formed along an inter-particle boundary of a soft magnetic core metal powder, a method for preparing the same, and electronic components including the same as a core material. The soft magnetic composite according to the present invention may include the insulating layer formed along the inter-particle boundary of the soft magnetic core metal particles, such that damage to a coating film caused by a molding of the existing soft magnetic powder having the insulation coating film formed therein may be prevented, whereby an eddy current loss may be minimized.
    Type: Application
    Filed: July 14, 2014
    Publication date: January 15, 2015
    Inventors: Hak Kwan KIM, Sang Kyun KWON, Sung Jae LEE, Sung Yong AN
  • Patent number: 8932517
    Abstract: A process for production of a packed soft magnetic component, comprises the steps of:—preparing a rotational mold, consisting of at least one mold cavity connected to a driven rotational axle, arranging a coil in the mold, filling the at least one mold cavity with a binder and a soft magnetic, metallic material in the form of a powder,—driving the axle for rotation of said at least one mold, whereby the soft magnetic, metallic material is packed by centrifugal forces to one side of said at least one mold cavity, mixed with the binder, thus forming a component comprising a soft magnetic composite with a coil embedded therein.
    Type: Grant
    Filed: October 16, 2008
    Date of Patent: January 13, 2015
    Assignee: Magnetic Components Sweden AB
    Inventor: Mats Alaküla
  • Patent number: 8928442
    Abstract: The object of the invention is an inductive component equipped with a liquid cooling and a method for manufacturing an inductive component. The inductive component comprises at least a core (2) assembled from separate structural elements (8, 8a, 8b), a winding (5), and connection means (7) as well as ducts (9) integrated into the core (2) for the purpose of liquid cooling. Each structural element (8, 8a, 8b) comprises an aperture (9a, 13, 18) made in the manufacturing phase of the structural element (8, 8a, 8b), which aperture extends through the structural element and is a short part of the duct (9) intended for the purpose of liquid cooling.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: January 6, 2015
    Assignee: Earl Energy, LLC
    Inventor: Jarkko Salomäki
  • Patent number: 8928447
    Abstract: A reactor 1? includes one coil 2, a magnetic core 3 to which the coil 2 is arranged, and a case 4 containing an assembly 10 of the coil 2 and the magnetic core 3. The magnetic core 3 includes an inner core portion 31 inserted into the coil 2, and a coupling core portion 32 disposed around the coil 2. The coupling core portion 32 is made of a mixture of magnetic powder and resin. The coil 2 is covered with the coupling core portion 32 and is enclosed within the case 4 in a sealed state. The reactor 1? includes, in an outermost surface region exposed at an opening of the case 4, a magnetic shield layer 5 made of non-magnetic powder, having smaller specific gravity than the magnetic powder and having electrical conductivity, and the resin. A small reactor capable of reducing magnetic flux leaked to the outside is thereby provided.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: January 6, 2015
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Kazuhiro Inaba
  • Publication number: 20150002255
    Abstract: Provided is a composite for manufacturing a chip part for a high frequency, and the composite includes a magnetic powder having a relatively spherical shape, and a metal magnetic body particle having a relatively more amorphous shape than that of the magnetic powder and a lower hardness than that of the magnetic powder.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Inventors: Hak Kwan KIM, Sung Yong AN, Jae Yeong KIM, Jung Wook SEO
  • Patent number: 8922327
    Abstract: A reactor 1? includes a coil 2 formed by winding a wire 2w, a magnetic core 3 that is disposed inside and outside of the coil 2 and forms a closed magnetic circuit, and a case 4 that has an opening portion and a bottom surface 40 that opposes the opening portion and that houses an assembly 10 of the coil 2 and the magnetic core 3. At least the opening portion of the case 4 side of the magnetic core 3 is formed of a molded solid body that contains magnetic powder and resin. A surface layer 5, which prevents the magnetic powder from rusting, is provided on a surface of the magnetic core 3 on the opening portion of the case 4 side. The surface layer 5 has a resin portion formed of resin similar to the resin contained in the magnetic core 3. The resin portion is formed so as to be continuous with the resin contained in the magnetic core 3 without an interface formed therebetween.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: December 30, 2014
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Kazuhiro Inaba
  • Patent number: 8922323
    Abstract: When an outer core that is to be mounted on a reactor is seen in plan, the outer core is a compact that has a plan-view shape in which a side of the outer core that is opposite to a facing side of the outer core, which faces the inner cores, has a smaller dimension in a width direction, which is parallel to a facing surface, than the facing side of the outer core. A method of manufacturing such an outer core includes a preparing step and a compacting step. In the preparing step, coated soft magnetic powder including multiple coated soft magnetic particles formed by coating soft magnetic particles with insulating coated films is prepared as raw-material powder of the outer core.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: December 30, 2014
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Electric Sintered Alloy, Ltd.
    Inventors: Masato Uozumi, Atsushi Sato, Kazushi Kusawake
  • Patent number: 8922325
    Abstract: A coil component comprising a first split magnetic core and a second split magnetic core, each having an outer core leg, an inner core leg and a back yoke connecting the outer core leg and the inner core leg, and a coil block mounted to the inner core leg, wherein the outer core leg has a sectional area smaller than a sectional area of the inner core leg, a density of magnetic body in the outer core leg is different from a density of the magnetic body in any of the inner core leg and the back yoke, and the first split magnetic core and the second split magnetic core are butted against each other to form a magnetic core of a closed magnetic circuit.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: December 30, 2014
    Assignee: Panasonic Corporation
    Inventors: Tomonori Shibuya, Tsunetsugu Imanishi
  • Patent number: 8922326
    Abstract: A laminated electronic component includes a first magnetic material portion, a low-magnetic-permeability portion laminated on the first magnetic material portion, a second magnetic material portion laminated on the low-magnetic-permeability portion, at least one annular or spiral coil disposed within the low-magnetic-permeability portion, and a plurality of columnar magnetic material portions disposed within the low-magnetic-permeability portion so as to extend through inside of the coil and connecting the first magnetic material portion to the second magnetic material portion.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: December 30, 2014
    Assignee: Murata Manufactring Co., Ltd.
    Inventors: Masaki Inui, Hiromu Fukushima
  • Publication number: 20140375410
    Abstract: A transformer includes a magnetic core assembly, a bobbin, and a winding coil assembly. The magnetic core assembly includes a first magnetic core and a second magnetic core. Each of the first magnetic core and the second magnetic core includes a magnetic plate, a center leg, a first lateral leg, and a second lateral leg. The first lateral leg and the second lateral leg are disposed on two opposite edges of the magnetic plate. The magnetic plate has a thinned region. The thinned region is defined by the first lateral leg, the second lateral leg and the center leg collaboratively. The bobbin has an engaging structure corresponding to the thinned region. When the bobbin is arranged between the first magnetic core and the second magnetic core, the engaging structure of the bobbin is engaged with the thinned region. The winding coil assembly is wound on the bobbin.
    Type: Application
    Filed: January 22, 2014
    Publication date: December 25, 2014
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Chun-Ching Yen, Hsien-Chun Peng, Yue Tsao, Po-Yu Wei
  • Publication number: 20140375414
    Abstract: An open type stereoscopic triangle amorphous alloy reel iron core comprises an iron core body wherein a three-phase round core column combined by three identical closed iron core single frames, and the combined round core column is arranged in a stereoscopic equilateral triangle shape. Each iron core single frame comprises iron yokes arranged on an upper end and a lower end of the iron core single frame, the iron yoke on one side of each iron core single frame is provided with an opening, and the iron core single frame can be assembled or disassembled at the opening. By providing the opening, on the iron yoke on one side of each stereoscopic triangle amorphous alloy iron core single frame, coils can be independently wound in the production process of a transformer, and the finished coils are directly sleeved on the three core columns, improving production efficiency and saving production cost.
    Type: Application
    Filed: January 17, 2012
    Publication date: December 25, 2014
    Inventors: Kaixuan Xu, Xianqing Guo
  • Publication number: 20140375413
    Abstract: Disclosed herein is a metal magnetic powder, and the metal magnetic powder according to the exemplary embodiment of the present invention includes a soft magnetic core particle and a multilayer coating film covering the core particle and having a multilayer structure, the multilayer coating film including an oxide film formed by heat treating the core particle and an insulation film formed by coating a coating particle with respect to the core particle.
    Type: Application
    Filed: October 8, 2013
    Publication date: December 25, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hak Kwan Kim, Sung Yong An, Sung Jae Lee, Jung Wook Seo
  • Patent number: 8896407
    Abstract: An inductor comprises a magnetic core and a coil. The magnetic core has a wound portion around which the coil is wound, and a peripheral portion. The magnetic core is formed from two or more preliminarily-formed-bodies which are pressure-molded in a state where the coil winds one or more preliminarily-formed-bodies which form the wound portion. The preliminarily-formed-bodies include at least one preliminarily-formed-body which forms the peripheral portion while not form the wound portion. Each of the preliminarily-formed-bodies is made of a mixture of flat magnetic powders and an organic binder so as to have a plate-like shape. The flat magnetic powders are oriented so as to be parallel to the preliminarily-formed-body.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: November 25, 2014
    Assignee: NEC TOKIN Corporation
    Inventors: Kenichi Chatani, Naoharu Yamamoto
  • Patent number: 8896405
    Abstract: A coil-type electronic component having a coil inside or on the surface of a base material, characterized in that the base material of the coil-type electronic component is constituted by a group of soft magnetic alloy grains whose main ingredients are iron, silicate and chromium, and that an oxide layer is formed on the surface of each soft magnetic alloy grain, where the oxide layer is produced as a result of oxidization of the grain and has more chromium than the alloy grain, and this oxide layer has a two-layer structure constituted by an inner layer whose main ingredient is chromium oxide and an outer layer whose main ingredient is iron-chromium oxide, and the outer layers of soft magnetic alloy grains are inter-bonded.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: November 25, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Masahiro Hachiya, Atsushi Tanada, Kenji Otake, Kiyoshi Tanaka, Tetsuyuki Suzuki
  • Patent number: 8889029
    Abstract: A ferrite sintered body having an improved strength and a noise filter including the same are provided. A ferrite sintered body includes 1 mol % to 10 mol % Cu on CuO basis, a spinel-structured crystal containing Fe, Zn, Ni, Cu and O as a main phase, and Cu compound particles present at a grain boundary, having an average particle diameter of 0.5 ?m to 10 ?m. The ferrite sintered body includes the Cu compound particles present at a grain boundary. It is thereby possible to suppress the grain growth of the crystals serving as the main phase to attain a morphology formed of fine crystals, and also inhibit the propagation of destruction of the grain boundary, thus making it possible to achieve a ferrite sintered body with an improved strength.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: November 18, 2014
    Assignee: Kyocera Corporation
    Inventor: Hidehiro Takenoshita