Patents by Inventor Hideaki YOSHIWARA

Hideaki YOSHIWARA 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
  • Positive-electrode active material for non-aqueous secondary battery and method for producing the same
    Patent number: 10522831
    Abstract: The present invention provides a positive-electrode active material for non-aqueous secondary battery comprising a sodium transition metal composite oxide represented by Formula: NaxFe1-yMyO2, wherein 0.4?x?0.7, 0.25?y<1.0, and M is at least one element selected from the group consisting of manganese, cobalt and nickel, the sodium transition metal composite oxide having a crystal structure substantially composed of P63/mmc alone.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: December 31, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Hideaki Yoshiwara, Tsutomu Yamada, Masahiro Murayama
  • POSITIVE-ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME
    Publication number: 20180175389
    Abstract: The present invention provides a positive-electrode active material for non-aqueous secondary battery comprising a sodium transition metal composite oxide represented by Formula: NaxFe1-yMyO2, wherein 0.4?x?0.7, 0.25?y<1.0, and M is at least one element selected from the group consisting of manganese, cobalt and nickel, the sodium transition metal composite oxide having a crystal structure substantially composed of P63/mmc alone.
    Type: Application
    Filed: February 13, 2018
    Publication date: June 21, 2018
    Applicant: NICHIA CORPORATION
    Inventors: Hideaki YOSHIWARA, Tsutomu YAMADA, Masahiro MURAYAMA
  • POSITIVE-ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS SECONDARY BATTERY AND METHOD FOR PRODUCING THE SAME
    Publication number: 20150004491
    Abstract: The present invention provides a positive-electrode active material for non-aqueous secondary battery comprising a sodium transition metal composite oxide represented by Formula: NaxFe1-yMyO2, wherein 0.4?x?0.7, 0.25?y<1.0, and M is at least one element selected from the group consisting of manganese, cobalt and nickel, the sodium transition metal composite oxide having a crystal structure substantially composed of P63/mmc alone.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Inventors: Hideaki YOSHIWARA, Tsutomu YAMADA, Masahiro MURAYAMA