Patents by Inventor Ryuhei HATTORI

Ryuhei HATTORI 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 AND METHOD OF PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20240154107
    Abstract: A method of producing a positive electrode active material, the method includes: contacting first particles that contain a lithium transition metal composite oxide with a solution containing sodium ions to obtain second particles containing the lithium transition metal composite oxide and sodium element, wherein the lithium transition metal composite oxide has a layered structure and a composition ratio of a number of moles of nickel to a total number of moles of metals other than lithium in a range of from 0.7 to less than 1; mixing the second particles and a boron compound to obtain a mixture; and heat-treating the mixture at a temperature in a range of from 100° C. to 450° C.
    Type: Application
    Filed: January 19, 2024
    Publication date: May 9, 2024
    Applicant: NICHIA CORPORATION
    Inventors: Ryuhei HATTORI, Yoshitomo MIYASHITA, Tatsuya YOKOYAMA, Chika NISHIO, Takashi SUGIMOTO
  • Positive electrode active material and method of producing positive electrode active material
    Patent number: 11942631
    Abstract: A method of producing a positive electrode active material, the method includes: contacting first particles that contain a lithium transition metal composite oxide with a solution containing sodium ions to obtain second particles containing the lithium transition metal composite oxide and sodium element, wherein the lithium transition metal composite oxide has a layered structure and a composition ratio of a number of moles of nickel to a total number of moles of metals other than lithium in a range of from 0.7 to less than 1; mixing the second particles and a boron compound to obtain a mixture; and heat-treating the mixture at a temperature in a range of from 100° C. to 450° C.
    Type: Grant
    Filed: February 16, 2023
    Date of Patent: March 26, 2024
    Assignee: NICHIA CORPORATION
    Inventors: Ryuhei Hattori, Yoshitomo Miyashita, Tatsuya Yokoyama, Chika Nishio, Takashi Sugimoto
  • Grid interconnection system, interconnection control device and grid interconnection method
    Patent number: 11916389
    Abstract: A grid interconnection system for a power grid includes: a storage battery; a power conversion device that converts power from the storage battery into AC; and an interconnection control device that supplies power from a commercial power supply to a load and supplies power from the power conversion device to the load when the commercial power supply fails. When the commercial power supply is restored, the interconnection control device starts supply of power from the commercial power supply to the load, and stops supply of power from the power conversion device to the load after the supply of power from the commercial power supply to the load is started.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: February 27, 2024
    Assignee: DAIHEN Corporation
    Inventors: Ryuhei Nishio, Akihiro Ohori, Nobuyuki Hattori, Koji Matsunaga
  • POSITIVE ELECTRODE ACTIVE MATERIAL AND METHOD OF PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20230197943
    Abstract: A method of producing a positive electrode active material, the method includes: contacting first particles that contain a lithium transition metal composite oxide with a solution containing sodium ions to obtain second particles containing the lithium transition metal composite oxide and sodium element, wherein the lithium transition metal composite oxide has a layered structure and a composition ratio of a number of moles of nickel to a total number of moles of metals other than lithium in a range of from 0.7 to less than 1; mixing the second particles and a boron compound to obtain a mixture; and heat-treating the mixture at a temperature in a range of from 100° C. to 450° C.
    Type: Application
    Filed: February 16, 2023
    Publication date: June 22, 2023
    Applicant: NICHIA CORPORATION
    Inventors: Ryuhei HATTORI, Yoshitomo MIYASHITA, Tatsuya YOKOYAMA, Chika NISHIO, Takashi SUGIMOTO
  • Positive electrode active material and method of producing positive electrode active material
    Patent number: 11621415
    Abstract: A method of producing a positive electrode active material, the method includes: contacting first particles that contain a lithium transition metal composite oxide with a solution containing sodium ions to obtain second particles containing the lithium transition metal composite oxide and sodium element, wherein the lithium transition metal composite oxide has a layered structure and a composition ratio of a number of moles of nickel to a total number of moles of metals other than lithium in a range of from 0.7 to less than 1; mixing the second particles and a boron compound to obtain a mixture; and heat-treating the mixture at a temperature in a range of from 100° C. to 450° C.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: April 4, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Ryuhei Hattori, Yoshitomo Miyashita, Tatsuya Yokoyama, Chika Nishio, Takashi Sugimoto
  • POSITIVE ELECTRODE ACTIVE MATERIAL AND METHOD OF PRODUCING POSITIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20210013503
    Abstract: A method of producing a positive electrode active material, the method includes: contacting first particles that contain a lithium transition metal composite oxide with a solution containing sodium ions to obtain second particles containing the lithium transition metal composite oxide and sodium element, wherein the lithium transition metal composite oxide has a layered structure and a composition ratio of a number of moles of nickel to a total number of moles of metals other than lithium in a range of from 0.7 to less than 1; mixing the second particles and a boron compound to obtain a mixture; and heat-treating the mixture at a temperature in a range of from 100° C. to 450° C.
    Type: Application
    Filed: July 10, 2020
    Publication date: January 14, 2021
    Applicant: NICHIA CORPORATION
    Inventors: Ryuhei HATTORI, Yoshitomo MIYASHITA, Tatsuya YOKOYAMA, Chika NISHIO, Takashi SUGIMOTO