Patents by Inventor Takefumi SUGIYAMA

Takefumi SUGIYAMA 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).

  • Sm-Fe-N magnet material and Sm-Fe-N bonded magnet
    Patent number: 10658095
    Abstract: The present invention relates to an Sm—Fe—N magnet material including: 7.0-12 at % of Sm; 0.1-1.5 at % of at least one element selected from the group consisting of Hf, Zr, and Sc; 0.1-0.5 at % of Mn; 10-20 at % of N; and 0-35 at % of Co, with the remainder being Fe and unavoidable impurities. The present invention also relates to an Sm—Fe—N bonded magnet including a powder of the Sm—Fe—N magnet material and a binder.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: May 19, 2020
    Assignee: DAIDO STEEL CO., LTD.
    Inventors: Iwao Sakazaki, Takefumi Sugiyama
  • Sm-Fe-N MAGNET MATERIAL AND Sm-Fe-N BONDED MAGNET
    Publication number: 20180082771
    Abstract: The present invention relates to an Sm—Fe—N magnet material including: 7.0-12 at % of Sm; 0.1-1.5 at % of at least one element selected from the group consisting of Hf, Zr, and Sc; 0.1-0.5 at % of Mn; 10-20 at % of N; and 0-35 at % of Co, with the remainder being Fe and unavoidable impurities. The present invention also relates to an Sm—Fe—N bonded magnet including a powder of the Sm—Fe—N magnet material and a binder.
    Type: Application
    Filed: September 11, 2017
    Publication date: March 22, 2018
    Inventors: Iwao SAKAZAKI, Takefumi SUGIYAMA