Patents by Inventor Kumi YOSHIHARA

Kumi YOSHIHARA 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).

  • POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS SECONDARY BATTERY, AND METHOD FOR MANUFACTURING SAME
    Publication number: 20240072253
    Abstract: Provided is a positive-electrode active material for a nonaqueous electrolyte secondary battery, including a lithium transition metal composite oxide particle having a layered structure and containing nickel, and an oxide containing lithium and aluminum and an oxide containing lithium and boron adhering to a surface of the lithium transition metal composite oxide particle. The lithium transition metal composite oxide particle includes a secondary particle formed by aggregation of primary particles containing a solid solution of aluminum in a surface layer. The lithium transition metal composite oxide particles have a composition with a difference of more than 0.22 mol % and less than 0.
    Type: Application
    Filed: October 26, 2023
    Publication date: February 29, 2024
    Applicant: NICHIA CORPORATION
    Inventors: Kumi YOSHIHARA, Kosuke SHIMOKITA, Kiyoto IKEBATA, Takashi SUGIMOTO
  • Positive electrode active material for nonaqueous secondary battery, and method for manufacturing same
    Patent number: 11837723
    Abstract: Provided is a positive-electrode active material for a nonaqueous electrolyte secondary battery, including a lithium transition metal composite oxide particle having a layered structure and containing nickel, and an oxide containing lithium and aluminum and an oxide containing lithium and boron adhering to a surface of the lithium transition metal composite oxide particle. The lithium transition metal composite oxide particle includes a secondary particle formed by aggregation of primary particles containing a solid solution of aluminum in a surface layer. The lithium transition metal composite oxide particles have a composition with a difference of more than 0.22 mol % and less than 0.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: December 5, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Kumi Yoshihara, Kosuke Shimokita, Kiyoto Ikebata, Takashi Sugimoto
  • POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS SECONDARY BATTERY, AND METHOD FOR MANUFACTURING SAME
    Publication number: 20200266441
    Abstract: Provided is a positive-electrode active material for a nonaqueous electrolyte secondary battery, including a lithium transition metal composite oxide particle having a layered structure and containing nickel, and an oxide containing lithium and aluminum and an oxide containing lithium and boron adhering to a surface of the lithium transition metal composite oxide particle. The lithium transition metal composite oxide particle includes a secondary particle formed by aggregation of primary particles containing a solid solution of aluminum in a surface layer. The lithium transition metal composite oxide particles have a composition with a difference of more than 0.22 mol % and less than 0.
    Type: Application
    Filed: February 19, 2020
    Publication date: August 20, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Kumi YOSHIHARA, Kosuke SHIMOKITA, Kiyoto IKEBATA, Takashi SUGIMOTO