Patents by Inventor Yosuke HARASHIMA

Yosuke HARASHIMA 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).

  • MnBi-based magnet
    Publication number: 20240347240
    Abstract: A MnBi-based magnet according to an embodiment includes crystal grains of (MnBi)aMb composition including a manganese element, a bismuth and a M element, wherein the M element is contained an amount of more than 0 at % and less than or equal to 10 at % when at % for all atoms of (MnBi)aMb is 100 at %, and the M element includes a chromium element, a germanium element, or a tellurium element.
    Type: Application
    Filed: April 17, 2024
    Publication date: October 17, 2024
    Inventors: Hyunseok LIM, Seok Bae, Yuto Morishita, Yosuke Harashima, Yasuteru Shigeta, Masafuyu Matsui, Rie Umetsu
  • Rare earth magnets
    Patent number: 11721479
    Abstract: A rare earth magnet including a magnetic phase having the composition represented by (Nd(1?x?y)LaxCey)2(Fe(1?z)Coz)14B. When the saturation magnetization at absolute zero and the Curie temperature calculated by Kuzmin's formula based on the measured values at finite temperature and the saturation magnetization at absolute zero and the Curie temperature calculated by first principles calculation are respectively subjected to data assimilation. The saturation magnetization M(x, y, z, T=0) at absolute zero and the Curie temperature obtained by machine learning using the assimilated data group are applied again to Kuzmin's formula and the saturation magnetization at finite temperature is represented by a function M(x, y, z, T), x, y, and z of the formula in an atomic ratio are in a range of satisfying M(x, y, z, T)>M(x, y, z=0, T) and 400?T?453.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: August 8, 2023
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, THE UNIVERSITY OF TOKYO
    Inventors: Kazuya Yokota, Tetsuya Syoji, Noritsugu Sakuma, Takashi Miyake, Yosuke Harashima, Hisazumi Akai, Naoki Kawashima, Keiichi Tamai, Munehisa Matsumoto
  • RARE EARTH MAGNETS
    Publication number: 20210065973
    Abstract: A rare earth magnet including a magnetic phase having the composition represented by (Nd(1?x?y)LaxCey)2(Fe(1?z)Coz)14B. When the saturation magnetization at absolute zero and the Curie temperature calculated by Kuzmin's formula based on the measured values at finite temperature and the saturation magnetization at absolute zero and the Curie temperature calculated by first principles calculation are respectively subjected to data assimilation. The saturation magnetization M(x, y, z, T=0) at absolute zero and the Curie temperature obtained by machine learning using the assimilated data group are applied again to Kuzmin's formula and the saturation magnetization at finite temperature is represented by a function M(x, y, z, T), x, y, and z of the formula in an atomic ratio are in a range of satisfying M(x, y, z, T)>M(x, y, z=0, T) and 400?T?453.
    Type: Application
    Filed: August 24, 2020
    Publication date: March 4, 2021
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, THE UNIVERSITY OF TOKYO
    Inventors: Kazuya YOKOTA, Tetsuya SYOJI, Noritsugu SAKUMA, Takashi MIYAKE, Yosuke HARASHIMA, Hisazumi AKAI, Naoki KAWASHIMA, Keiichi TAMAI, Munehisa MATSUMOTO