Patents by Inventor Toshiya Hozumi

Toshiya Hozumi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • METHOD FOR PRODUCING RARE EARTH MAGNET
    Publication number: 20190348219
    Abstract: A method for producing a rare earth magnet includes a molding step of forming a green compact by supplying a metal powder containing a rare earth element into a mold, an orientation step of orienting the metal powder included in the green compact by applying a magnetic field to the green compact held in the mold, a separation step of separating at least a part of the mold from the green compact after the orientation step, a heating step of heating the green compact after the separation step to adjust the temperature of the green compact to 200° C. or higher and 450° C. or lower, and a sintering step of sintering the green compact after the heating step.
    Type: Application
    Filed: November 7, 2017
    Publication date: November 14, 2019
    Applicant: TDK Corporation
    Inventors: Toshiya HOZUMI, Shuji HIGASHI, Atsushi TADA
  • MnBi magnetic material
    Patent number: 9842678
    Abstract: A binary, ternary, quaternary, or quinary Mn—X magnetic material (X represents at least one element selected from Al, Bi, Ga, and Rh) has a thickness of 100 nm or less and exhibits a uniaxial magnetic anisotropy constant of 107 erg/cc or higher and a coercive force of 15 kOe or higher in the temperature range of 0° C. or more and 200° C. or less, and a room-temperature saturation magnetization of 400 emu/cc or higher.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: December 12, 2017
    Assignees: The Board of Trustees of The University of Alabama, TDK Corporation
    Inventors: Takao Suzuki, Patrick R. Leclair, Toshiya Hozumi
  • MAGNETIC MATERIAL
    Publication number: 20160276073
    Abstract: A binary, ternary, quaternary, or quinary Mn—X magnetic material (X represents at least one element selected from Al, Bi, Ga, and Rh) has a thickness of 100 nm or less and exhibits a uniaxial magnetic anisotropy constant of 107 erg/cc or higher and a coercive force of 15 kOe or higher in the temperature range of 0° C. or more and 200° C. or less, and a room-temperature saturation magnetization of 400 emu/cc or higher.
    Type: Application
    Filed: January 16, 2014
    Publication date: September 22, 2016
    Inventors: Takao SUZUKI, Patrick R. LECLAIR, Toshiya HOZUMI
  • Method for producing rare earth sintered magnet
    Patent number: 8540929
    Abstract: The present invention relates to a method for producing a rare earth sintered magnet including the steps of: molding a mixture of magnetic powder containing a rare earth compound and oil-extended rubber containing oil and rubber to produce a molded body; removing the oil-extended rubber from the molded body; and calcining the molded body from which the oil-extended rubber is removed to produce a rare earth sintered magnet 10.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: September 24, 2013
    Assignee: TDK Corporation
    Inventors: Shuichiro Irie, Raitaro Masaoka, Toshiya Hozumi, Tetsuya Chiba
  • METHOD FOR PRODUCING RARE EARTH SINTERED MAGNET
    Publication number: 20110121498
    Abstract: The present invention relates to a method for producing a rare earth sintered magnet including the steps of: molding a mixture of magnetic powder containing a rare earth compound and oil-extended rubber containing oil and rubber to produce a molded body; removing the oil-extended rubber from the molded body; and calcining the molded body from which the oil-extended rubber is removed to produce a rare earth sintered magnet 10.
    Type: Application
    Filed: November 22, 2010
    Publication date: May 26, 2011
    Applicant: TDK Corporation
    Inventors: Shuichiro IRIE, Raitaro Masaoka, Toshiya Hozumi, Tetsuya Chiba