Patents by Inventor Miyuki MATSUSHITA

Miyuki MATSUSHITA 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).

  • Method for producing polyanionic positive electrode active material composite particles, and polyanionic positive electrode active material precursor-graphite oxide composite granulated bodies
    Patent number: 10505179
    Abstract: A method is provided for producing polyanionic positive electrode active material composite particles, which comprises: a step 1 wherein precursor composite granulated bodies, each of which contains a polyanionic positive electrode active material precursor particle in graphite oxide, are formed by mixing a polyanionic positive electrode active material precursor and graphite oxide; and a step 2 wherein the precursor composite granulated bodies obtained in step 1 are heated at 500° C. or higher in an inert atmosphere or in a reducing atmosphere. The maximum intensity of the X-ray diffraction peak based on the positive electrode active material is less than 50% of the maximum intensity of the X-ray diffraction peak based on the materials other than the positive electrode active material.
    Type: Grant
    Filed: May 19, 2014
    Date of Patent: December 10, 2019
    Assignee: Toray Industries, Inc.
    Inventors: Eiichiro Tamaki, Yasuo Kubota, Hiroaki Kawamura, Miyuki Matsushita
  • METHOD FOR PRODUCING POLYANIONIC POSITIVE ELECTRODE ACTIVE MATERIAL COMPOSITE PARTICLES, AND POLYANIONIC POSITIVE ELECTRODE ACTIVE MATERIAL PRECURSOR-GRAPHITE OXIDE COMPOSITE GRANULATED BODIES
    Publication number: 20160164074
    Abstract: A method is provided for producing polyanionic positive electrode active material composite particles, which comprises: a step 1 wherein precursor composite granulated bodies, each of which contains a polyanionic positive electrode active material precursor particle in graphite oxide, are formed by mixing a polyanionic positive electrode active material precursor and graphite oxide; and a step 2 wherein the precursor composite granulated bodies obtained in step 1 are heated at 500° C. or higher in an inert atmosphere or in a reducing atmosphere. The maximum intensity of the X-ray diffraction peak based on the positive electrode active material is less than 50% of the maximum intensity of the X-ray diffraction peak based on the materials other than the positive electrode active material.
    Type: Application
    Filed: May 19, 2014
    Publication date: June 9, 2016
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Eiichiro Tamaki, Yasu Kubota, Hiroaki Kawamura, Miyuki Matsushita
  • POSITIVE ELECTRODE ACTIVE MATERIAL/GRAPHENE COMPOSITE PARTICLES, AND POSITIVE ELECTRODE MATERIAL FOR LITHIUM ION CELL
    Publication number: 20150333319
    Abstract: To provide: positive electrode active material/graphene composite particles, which are for a positive electrode active material of a lithium ion battery having low electron conductivity, and with which electron conductivity is improved while suppressing hindrance of lithium ion extraction/insertion into active material particles; and a positive electrode material for a lithium ion battery, said positive electrode material comprising said composite particles.
    Type: Application
    Filed: January 20, 2014
    Publication date: November 19, 2015
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Hiroaki KAWAMURA, Yasuo KUBOTA, Eiichiro TAMAKI, Miyuki MATSUSHITA, Hanxiao YANG