Patents by Inventor Fumiya Kitanishi

Fumiya Kitanishi 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).

  • RFeB-based magnet and method for producing RFeB-based magnet
    Patent number: 11328845
    Abstract: The present invention relates to an RFeB-based magnet in which a treatment (grain boundary diffusion treatment) for diffusing atoms of the heavy rare earth element RH is performed in a base material including an RLFeB-based sintered magnet obtained by subjecting crystal grains in a raw-material powder including a powder of an RLFeB-based alloy containing the light rare earth element RL, Fe and B to orientation in a magnetic field and then sintering the oriented raw-material powder, or an RLFeB-based hot-deformed magnet obtained by subjecting the same raw-material powder to hot pressing and then to hot deforming to thereby orient the crystal grains in the raw-material powder, and a method for producing the RFeB-based magnet.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: May 10, 2022
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Jumpei Hinata, Hayato Hashino, Fumiya Kitanishi, Kazuya Gomi, Kazumasa Fujimura
  • RFeB-based magnet and method for producing RFeB-based magnet
    Patent number: 11295880
    Abstract: The present invention relates to an RFeB-based magnet in which a treatment (grain boundary diffusion treatment) for diffusing atoms of the heavy rare earth element RH is performed in a base material including an RLFeB-based sintered magnet obtained by subjecting crystal grains in a raw-material powder including a powder of an RLFeB-based alloy containing the light rare earth element RL, Fe and B to orientation in a magnetic field and then sintering the oriented raw-material powder, or an RLFeB-based hot-deformed magnet obtained by subjecting the same raw-material powder to hot pressing and then to hot deforming to thereby orient the crystal grains in the raw-material powder, and a method for producing the RFeB-based magnet.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: April 5, 2022
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Jumpei Hinata, Hayato Hashino, Fumiya Kitanishi, Kazuya Gomi, Kazumasa Fujimura
  • RFeB-BASED MAGNET AND METHOD FOR PRODUCING RFeB-BASED MAGNET
    Publication number: 20180374617
    Abstract: The present invention relates to an RFeB-based magnet in which a treatment (grain boundary diffusion treatment) for diffusing atoms of the heavy rare earth element RH is performed in a base material including an RLFeB-based sintered magnet obtained by subjecting crystal grains in a raw-material powder including a powder of an RLFeB-based alloy containing the light rare earth element RL, Fe and B to orientation in a magnetic field and then sintering the oriented raw-material powder, or an RLFeB-based hot-deformed magnet obtained by subjecting the same raw-material powder to hot pressing and then to hot deforming to thereby orient the crystal grains in the raw-material powder, and a method for producing the RFeB-based magnet.
    Type: Application
    Filed: June 25, 2018
    Publication date: December 27, 2018
    Inventors: Jumpei HINATA, Hayato Hashino, Fumiya Kitanishi, Kazuya Gomi, Kazumasa Fujimura