Patents Examined by Lisa Chau
  • Patent number: 10886044
    Abstract: A rare earth permanent magnet that is high in residual magnetization and coercivity is obtained and includes R and T. A main phase of crystal grains having an Nd5Fe17 type crystal structure is included. In an X-ray diffraction profile drawn by performing an XRD measurement for a rare earth permanent magnet, peaks of detected intensity are present in specific ranges. In which the detected intensity of the peak with the highest detected intensity in the range of 41.60°<2?(°)<42.80° is set as ?, the detected intensity of the peak with the highest detected intensity in the range of 34.38°<2?(°)<34.64° is set as ?, and the detected intensity of the peak with the highest detected intensity in the range of 38.70°<2?(°)<41.20° is set as ?, 0.38<?/?<0.70 and 0.45<?/?<0.70 are established. The peak with the highest detected intensity in the range of 34.38°<2?(°)<34.64° is a peak derived from the Nd5Fe17 type crystal structure.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: January 5, 2021
    Assignee: TDK CORPORATION
    Inventors: Masashi Ito, Eiichiro Fukuchi
  • Patent number: 10882923
    Abstract: There are provided low-substituted hydroxypropyl cellulose (L-HPC) having good compressibility and capping-prevention performance, and others. Specifically, provided are L-HPC having a hydroxypropoxy content of 5 to 16% by weight, a volume fraction of long fibrous particles of 20 to 40% and a volume fraction of short fibrous particles of 26 to 60% with the proviso that the latter is greater than the former; and a solid preparation containing the L-HPC. Also provided is a method for producing the L-HPC including the steps of: bringing powdery pulp having a length-weighted mean width of 10 to 25 ?m into contact with an alkali metal hydroxide solution, reacting the alkali cellulose with propylene oxide, and neutralizing the alkali metal hydroxide present in the reaction product with an acid to precipitate crude low-substituted hydroxypropyl cellulose in the absence of a step of dissolving a portion or all of the reaction product.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: January 5, 2021
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Yasuyuki Hirama
  • Patent number: 10875986
    Abstract: Graphene fibers made from a graphene film formed into an elongated fiber-like shape and composite materials made from the graphene fibers. The graphene film has amine groups formed on at least an outer surface of the graphene film and epoxide groups formed on at least one edge of the graphene film. The amine groups are formed in a functionalized area on the outer surface of the graphene film that is within about 10 microns from the at least one edge of the graphene film, or the functionalized area may extend the entire width of the graphene film. The graphene film may also have holes formed through the graphene film. The elongated fiber-like shapes may be the graphene film in a rolled spiral orientation or the graphene film in a twisted formation.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: December 29, 2020
    Assignee: The Boeing Company
    Inventors: Keith Daniel Humfeld, Kenneth H. Griess
  • Patent number: 10878845
    Abstract: The magnetic tape includes a non-magnetic support; a magnetic layer including ferromagnetic powder and a binding agent on one surface side of the non-magnetic support; and a back coating layer including non-magnetic powder and a binding agent on the other surface side of the non-magnetic support, in which a thickness of the back coating layer is equal to or smaller than 0.30 ?m, and an isoelectric point of a surface zeta potential of the back coating layer is equal to or smaller than 3.0.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: December 29, 2020
    Assignee: FUJIFILM Corporation
    Inventor: Norihito Kasada
  • Patent number: 10720270
    Abstract: The present invention is directed to a method for providing a surface, in particular a floor surface, with a layer of a magnetic and/or magnetizable cover composition, the surface having at least one layer of cementitious material, wherein the method comprises the step of spreading the layer of the cover composition onto the surface, the cover composition comprising a polymeric binder and magnetic and/or magnetizable particles, characterized in that the layer of the cover composition has a water vapor transmission rate of at least 0.25 g h?1 m?2 according to ASTM D1653, and the surface and/or the layer of cementitious material has a relative humidity of more than 75% according to ASTM F 2170-11.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: July 21, 2020
    Assignee: !OBAC Limited
    Inventors: Ian Robinson, Wayne Jobling, Ian Spreadborough, Derek Smyth
  • Patent number: 10706996
    Abstract: A magnetic material includes a structure in which a first magnetic layer 1 and a second magnetic layer 2 are stacked such that each layer is formed at least partially in a stacking direction by substantially one atomic layer. The first magnetic layer contains Co as a principal component. The second magnetic layer includes at least Ni. The magnetic material has magnetic anisotropy in the stacking direction. Preferably, an atomic arrangement within a film surface of the first magnetic layer and the second magnetic layer has six-fold symmetry.
    Type: Grant
    Filed: November 11, 2013
    Date of Patent: July 7, 2020
    Assignee: TOHOKU UNIVERSITY
    Inventors: Shunsuke Fukami, Hideo Sato, Michihiko Yamanouchi, Shoji Ikeda, Hideo Ohno
  • Patent number: 10546678
    Abstract: A module comprises a circuit board and an inductor. The circuit board has a facing surface and a rear surface which are located at opposite sides to each other in an up-down direction. The inductor has a magnetic core and a coil. The magnetic core is made of a soft magnetic metal material. The magnetic core has a facing surface and a radiating surface which are located at opposite sides to each other in the up-down direction. The facing surface of the magnetic core is arranged to face the facing surface of the circuit board in the up-down direction. The radiating surface of the magnetic core is arranged to be radiatable heat outward. The coil has a coil portion and a connection end. The coil portion winds, at least in part, the magnetic core. The connection end is connected to the facing surface of the circuit board.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: January 28, 2020
    Assignee: TOKIN CORPORATION
    Inventors: Kenichi Chatani, Kenji Ikeda, Toshinori Tsuda
  • Patent number: 10460755
    Abstract: Apparatus for recording data and method for making the same. In accordance with some embodiments, a recording layer is supported by a substrate. The recording layer has a granular magnetic recording layer with a first oxide content, a continuous magnetic recording layer with nominally no oxide content, and an oxide gradient layer disposed between the respective granular magnetic recording layer and the continuous magnetic recording layer. The oxide gradient layer has a second oxide content less than the first oxide content of the granular layer.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: October 29, 2019
    Assignee: Seagate Technology LLC
    Inventors: Pengcheng Li, Bin Lu, Thomas P. Nolan, Li-Lien Lee, Jai-Young Kim
  • Patent number: 10405540
    Abstract: A composite filament includes a core particle comprising a styrene/acrylate polymer resin, and a shell comprising a styrene/acrylate ionomer resin, wherein the styrene/acrylate ionomer resin comprises a metal ion acrylate monomer, and methods of making thereof. Various articles can be manufactured from such composite filaments.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: September 10, 2019
    Assignee: XEROX CORPORATION
    Inventors: Valerie M. Farrugia, Barkev Keoshkerian, Michelle N. Chretien
  • Patent number: 10400357
    Abstract: The present invention concerns fiber made from a polymer comprising imidazole groups, the polymer further having: i) halide anions being present in an amount in the range of 0.05 to 20.1 weight percent, based on weight of fiber; ii) sulfur, wherein the sulfur is present in the fiber in an amount in the range of 0.05 to 3 weight percent, based on weight of fiber; and iii) alkali metal ion, wherein the alkali metal ion is present in the fiber in an amount in the range of 0.05 to 2 weight percent, based on weight of fiber, the fiber exhibiting hydrochloric acid evolution as identified by TGA-IR between 277.13° C. to 448.19° C.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: September 3, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Steven R Allen, Vlodek Gabara, Joseph Lenning Lowery, Christopher William Newton, David J Rodini, Andrew J Sitter
  • Patent number: 10400082
    Abstract: The present invention concerns fiber made from a polymer comprising imidazole groups, fiber further having: i) a halide anion, the halide anion being present in an amount of 0.05 to 20.1 weight percent, based on weight of fiber; and ii) sulfur, wherein the sulfur is present in the fiber in an amount of 0.05 to 3 weight percent; the fiber exhibiting hydrochloric acid evolution as identified by TGA-IR between 277.13° C. to 448.19° C.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: September 3, 2019
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Steven R Allen, Vlodek Gabara, Joseph Lenning Lowery, Steven Raymond Lustig, Christopher William Newton, David J Rodini, Andrew J Sitter
  • Patent number: 10391676
    Abstract: A fiber-reinforced multilayered pellet includes a sheath layer and a core layer, the sheath layer being made of a resin composition containing a thermoplastic resin (a1) and a fibrous filler (b1), wherein the fibrous filler (b1) has a weight-average fiber length (Lw) of 0.1 mm to less than 0.5 mm and a weight-average fiber length/number-average fiber length ratio (Lw/Ln) of 1.0 to less than 1.8, the core layer being made of a resin composition containing a thermoplastic resin (a2) and a fibrous filler (b2), wherein the fibrous filler (b2) has a weight-average fiber length (Lw) of 0.5 mm to less than 15.0 mm and a weight-average fiber length/number-average fiber length ratio (Lw/Ln) of 1.8 to less than 5.0.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: August 27, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Akiyoshi Tamai, Kimihiko Hattori, Kenichi Utazaki
  • Patent number: 10395822
    Abstract: A rare-earth magnet is an R-T-B-based rare-earth magnet containing a rare-earth element R, a transition metal element T, and boron B. The rare-earth magnet further contains Cu and Co, while having a Cu concentration distribution with a gradient along a direction from a surface of the rare-earth magnet to the inside thereof, Cu having a higher concentration on the surface side of the rare-earth magnet than on the inside thereof, and a Co concentration distribution with a gradient along a direction from the surface of the rare-earth magnet to the inside thereof, Co having a higher concentration on the surface side of the rare-earth magnet than on the inside thereof. The rare-earth magnet is excellent in corrosion resistance.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: August 27, 2019
    Assignee: TDK CORPORATION
    Inventors: Masashi Miwa, Yasuyuki Kawanaka, Masahiro Oishi
  • Patent number: 10311907
    Abstract: Provided herein is an apparatus, including a magnetically soft underlayer (SUL); an interlayer stack overlying the SUL, wherein the interlayer stack comprises a seed layer of an fcc material; and a perpendicular magnetic recording layer overlying the interlayer stack, wherein a thickness of the SUL in combination with a distance of the SUL from the perpendicular recording layer is sufficient to orient a total magnetic field corresponding to a magnetic transducer head at an angle of about 45°.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: June 4, 2019
    Assignee: Seagate Technology LLC
    Inventors: Thomas P. Nolan, Li Tang, Yong-Chang Feng, Zhong (Stella) Wu, Samuel D. Harkness, Hans J. Richter, Youfeng Zheng
  • Patent number: 10134525
    Abstract: The present invention provides a dust core including, as principal components, a pulverized powder of an Fe-based amorphous alloy ribbon; and a Cr-containing Fe-based amorphous alloy atomized spherical powder, and the pulverized powder is in the shape of a thin plate having two principal planes opposing each other, and assuming that a minimum dimension along a plane direction of the principal planes is a grain size, the pulverized powder includes a pulverized powder with a grain size more than twice and not more than six times as large as a thickness of the pulverized powder in a proportion of 80 mass % or more of the whole pulverized powder and includes a pulverized powder with a grain size not more than twice as large as the thickness of the pulverized powder in a portion of 20 mass % or less of the whole pulverized powder.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: November 20, 2018
    Assignee: HITACHI METALS LTD.
    Inventor: Kazunori Nishimura
  • Patent number: 10026429
    Abstract: A perpendicular type of magnetic recording medium has a multi-layered recording structure made up of a plurality of ferro-magnetic layers and a non-magnetic layer interposed between the plurality of ferro-magnetic layers, and the perpendicular magnetic anisotropy energy of the lower ferro-magnetic layer is greater than the perpendicular magnetic anisotropy energy of the upper ferro-magnetic layer. Accordingly, the lower ferro-magnetic layer may be easily magnetically reversed by a magnetic field applied during a write operation. Thus, the perpendicular type of magnetic recording medium exhibits an enhanced thermal stability and write-ability.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: July 17, 2018
    Assignee: Seagate Technology LLC
    Inventors: Sok-hyun Kong, Hoo-san Lee, Sadayuki Watanabe, Shunji Takenoiri
  • Patent number: 10014045
    Abstract: Magnetic memories and methods are disclosed. A magnetic memory as described herein includes a plurality of stacked data storage layers to form a three-dimensional magnetic memory. The data storage layers are each formed from a multi-layer structure. At ambient temperatures, the multi-layer structures exhibit an antiparallel coupling state with a near zero net magnetic moment. At higher transition temperatures, the multi-layer structures transition from the antiparallel coupling state to a parallel coupling state with a net magnetic moment. At yet higher temperatures, the multi-layer structure transitions from the antiparallel coupling state to a receiving state where the coercivity of the multi-layer structures drops below a particular level so that magnetic fields from write elements or neighboring data storage layers may imprint data into the data storage layer.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: July 3, 2018
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Olav Hellwig, Bruce D. Terris, Jan-Ulrich Thiele
  • Patent number: 10008311
    Abstract: This invention relates to a magnetic composite powder, a method of preparing the same and an electromagnetic noise suppressing film comprising the same. The magnetic composite powder and the electromagnetic noise suppressing film can effectively suppress unwanted electromagnetic waves emitted by various parts of an advanced digital device having high performance characteristics in terms of speed, frequency and functionality.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: June 26, 2018
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Sang Woo Kim, Ji Hea Park, Yoon Bae Kim
  • Patent number: 9994974
    Abstract: The present invention concerns fiber made from a polymer comprising imidazole groups, the polymer further having: i) halide anions being present in an amount in the range of 0.05 to 20.1 weight percent, based on weight of fiber; ii) sulfur, wherein the sulfur is present in the fiber in an amount in the range of 0.05 to 3 weight percent, based on weight of fiber; and iii) alkali metal ion, wherein the alkali metal ion is present in the fiber in an amount in the range of 0.05 to 2 weight percent, based on weight of fiber.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: June 12, 2018
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Christopher William Newton, David J. Rodini, Andrew J. Sitter
  • Patent number: 9988514
    Abstract: The present invention concerns fiber made from a polymer comprising imidazole groups, fiber further having: i) a halide anion, the halide anion being present in an amount of 0.05 to 20.1 weight percent, based on weight of fiber; and ii) sulfur, wherein the sulfur is present in the fiber in an amount of 0.05 to 3 weight percent.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: June 5, 2018
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Steven R. Allen, Vlodek Gabara, Joseph Lenning Lowery, Steven Raymond Lustig, Christopher William Newton, David J. Rodini, Andrew J. Sitter