Patents by Inventor Rieko YOSHIMOTO

Rieko YOSHIMOTO 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).

  • Magnetic powder
    Patent number: 11710586
    Abstract: Provided are a SmFeN magnetic powder which is superior not only in water resistance and corrosion resistance but also in hot water resistance, and a method of preparing the powder. The present invention relates to a method of preparing a magnetic powder, comprising: plasma-treating a gas; surface-treating a SmFeN magnetic powder with the plasma-treated gas; and forming a coat layer on the surface of the surface-treated SmFeN magnetic powder.
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: July 25, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Rieko Yoshimoto, Satoshi Yamanaka, Shuichi Tada, Hideaki Yoshiwara
  • MAGNETIC POWDER AND PREPARATION METHOD THEREOF
    Publication number: 20220351882
    Abstract: Provided are a SmFeN magnetic powder which is superior not only in water resistance and corrosion resistance but also in hot water resistance, and a method of preparing the powder. The present invention relates to a method of preparing a magnetic powder, comprising: plasma-treating a gas; surface-treating a SmFeN magnetic powder with the plasma-treated gas; and forming a coat layer on the surface of the surface-treated SmFeN magnetic powder.
    Type: Application
    Filed: July 14, 2022
    Publication date: November 3, 2022
    Applicant: NICHIA CORPORATION
    Inventors: Rieko YOSHIMOTO, Satoshi YAMANAKA, Shuichi TADA, Hideaki YOSHIWARA
  • Magnetic powder and preparation method thereof
    Patent number: 11424055
    Abstract: Provided are a SmFeN magnetic powder which is superior not only in water resistance and corrosion resistance but also in hot water resistance, and a method of preparing the powder. The present invention relates to a method of preparing a magnetic powder, comprising: plasma-treating a gas; surface-treating a SmFeN magnetic powder with the plasma-treated gas; and forming a coat layer on the surface of the surface-treated SmFeN magnetic powder.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: August 23, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Rieko Yoshimoto, Satoshi Yamanaka, Shuichi Tada, Hideaki Yoshiwara
  • MAGNETIC POWDER AND PREPARATION METHOD THEREOF
    Publication number: 20200098495
    Abstract: Provided are a SmFeN magnetic powder which is superior not only in water resistance and corrosion resistance but also in hot water resistance, and a method of preparing the powder. The present invention relates to a method of preparing a magnetic powder, comprising: plasma-treating a gas; surface-treating a SmFeN magnetic powder with the plasma-treated gas; and forming a coat layer on the surface of the surface-treated SmFeN magnetic powder.
    Type: Application
    Filed: September 25, 2019
    Publication date: March 26, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Rieko YOSHIMOTO, Satoshi YAMANAKA, Shuichi TADA, Hideaki YOSHIWARA