Patents by Inventor Tomoki Hatsumori

Tomoki Hatsumori 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).

  • Patent number: 10601042
    Abstract: The present invention provides a positive electrode active substance for a secondary cell, the positive electrode active substance capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The present invention also provides a method for producing the positive electrode active substance for a secondary cell. That is, the present invention is a positive electrode active substance for a secondary cell, in which a water-insoluble electrically conductive carbon material and carbon obtained by carbonizing a water-soluble carbon material are supported on a compound containing at least iron or manganese, the compound represented by formula (A) LiFeaMnbMnbM1cPO4, formula (B) Li2FedMneM2fSiO4, or formula (C) NaFegMnhQiPO4.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: March 24, 2020
    Assignee: TAIHEIYO CEMENT CORPORATION
    Inventors: Hiroki Yamashita, Tomoki Hatsumori, Atsushi Nakamura, Takaaki Ogami
  • Publication number: 20190348680
    Abstract: The present invention provides a positive-electrode active material for a lithium-ion secondary cell or a sodium-ion secondary cell, which can effectively exhibit more excellent charge/discharge characteristics; and a method for manufacturing the positive-electrode active material. Namely, the present invention relates to a positive-electrode active material for a secondary cell comprising an oxide represented by formula (A): LiFeaMnbMcPO4, formula (B): LiFeaMnbMcSiO4, or formula (C): NaFegMnhQiPO4; and carbon derived from a cellulose nanofiber supported thereon.
    Type: Application
    Filed: July 18, 2019
    Publication date: November 14, 2019
    Applicant: TAIHEIYO CEMENT CORPORATION
    Inventors: Hiroki YAMASHITA, Tomoki HATSUMORI, Takaaki OGAMI
  • Patent number: 10461330
    Abstract: The present invention provides a positive-electrode active material for a lithium-ion secondary cell, which can effectively exhibit more excellent charge/discharge characteristics; and a method for manufacturing the positive-electrode active material. Namely, the present invention relates to a positive-electrode active material for a secondary cell comprising an oxide represented by formula (A): LifeaMnbMcPO4; and carbon derived from a cellulose nanofiber supported thereon.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: October 29, 2019
    Assignee: TAIHEIYO CEMENT CORPORATION
    Inventors: Hiroki Yamashita, Tomoki Hatsumori, Takaaki Ogami
  • Publication number: 20180083285
    Abstract: The present invention provides a positive electrode active substance for a secondary cell, the positive electrode active substance capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The present invention also provides a method for producing the positive electrode active substance for a secondary cell. That is, the present invention is a positive electrode active substance for a secondary cell, in which one or two selected from the group consisting of a water-insoluble electrically conductive carbon material and carbon obtained by carbonizing a water-soluble carbon material, and 0.1 to 5 mass % of a metal fluoride are supported on a compound containing at least iron or manganese, the compound represented by formula (A) LiFenMnbM1cPO4, formula (B) Li2FedMneM2fSiO4, or formula (C) NaFegMnhQiPO4.
    Type: Application
    Filed: September 17, 2015
    Publication date: March 22, 2018
    Applicant: TAIHEIYO CEMENT CORPORATION
    Inventors: Hiroki YAMASHITA, Tomoki HATSUMORI, Atsushi NAKAMURA, Takaaki OGAMI
  • Publication number: 20180083280
    Abstract: The present invention provides a positive electrode active substance for a secondary cell, the positive electrode active substance capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The present invention also provides a method for producing the positive electrode active substance for a secondary cell. That is, the present invention is a positive electrode active substance for a secondary cell, in which a water-insoluble electrically conductive carbon material and carbon obtained by carbonizing a water-soluble carbon material are supported on an oxide containing at least iron or manganese, the oxide represented by formula (A) LiFeaMnbMcPO4, formula (B) Li2FedMneNfSiO4, or formula (C) NaFegMnhQiPO4.
    Type: Application
    Filed: September 17, 2015
    Publication date: March 22, 2018
    Applicant: TAIHEIYO CEMENT CORPORATION
    Inventors: Hiroki YAMASHITA, Tomoki HATSUMORI, Atsushi NAKAMURA, Takaaki OGAMI
  • Publication number: 20180053929
    Abstract: A positive electrode active substance for a secondary cell, where the positive electrode active substance is capable of suppressing adsorption of water effectively in order to obtain a high-performance lithium ion secondary cell or sodium ion secondary cell. The positive electrode active substance contains 0.3 to 5 mass % of graphite, 0.1 to 4 mass % of carbon obtained by carbonizing a water-soluble carbon material, or 0.1 to 5 mass % of a metal fluoride is supported on a composite containing a compound which contains at least iron or manganese, where the compound is represented by formula (A) LiFeaMnbMcPO4, formula (B) Li2FedMneNfSiO4, or formula (C) NaFegMnhQiPO4, and carbon obtained by carbonizing a cellulose nanofiber.
    Type: Application
    Filed: September 17, 2015
    Publication date: February 22, 2018
    Applicant: TAIHEIYO CEMENT CORPORATION
    Inventors: Hiroki YAMASHITA, Tomoki HATSUMORI, Atsushi NAKAMURA, Takaaki OGAMI
  • Publication number: 20170301919
    Abstract: The present invention provides a positive-electrode active material for a lithium-ion secondary cell or a sodium-ion secondary cell, which can effectively exhibit more excellent charge/discharge characteristics; and a method for manufacturing the positive-electrode active material. Namely, the present invention relates to a positive-electrode active material for a secondary cell comprising an oxide represented by formula (A): LiFeaMnbMcPO4, formula (B): LiFeaMnbMcSiO4, or formula (C): NaFegMnhQiPO4; and carbon derived from a cellulose nanofiber supported thereon.
    Type: Application
    Filed: September 15, 2015
    Publication date: October 19, 2017
    Applicant: TAIHEIYO CEMENT CORPORATION
    Inventors: Hiroki YAMASHITA, Tomoki HATSUMORI, Takaaki OGAMI
  • Patent number: 9650247
    Abstract: A method for efficiently producing a high-purity metal hydride without contamination of other metals while initiating reaction rapidly is provided. A method for producing a metal hydride from a metal selected from the group consisting of Group 2 metals and Group 3 metals comprising: (A) charging the pressure resistant container with the metal, introducing hydrogen into the container, and heating the container to initiate reaction, wherein a gauge pressure (a) is set to 0.1 to 1.5 MPa, a heating temperature (b) is set to 50 to 250° C., and a product of the gauge pressure and the heating temperature, a×b, is set in the range of 20 to 100; (B) stopping the introduction of hydrogen to allow the reaction to proceed when the temperature in the reaction container is increased to a temperature higher by 10 to 100° C. than the heating temperature; (C) introducing hydrogen of 0.1 to 1.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: May 16, 2017
    Assignee: TAIHEIYO CEMENT CORPORATION
    Inventors: Tetsuya Ishimoto, Shoji Suzuki, Katsumi Matsui, Tomoki Hatsumori, Kazuhiko Tokoyoda
  • Publication number: 20160244328
    Abstract: A method for efficiently producing a high-purity metal hydride without contamination of other metals while initiating reaction rapidly is provided. A method for producing a metal hydride from a metal selected from the group consisting of Group 2 metals and Group 3 metals comprising: (A) charging the pressure resistant container with the metal, introducing hydrogen into the container, and heating the container to initiate reaction, wherein a gauge pressure (a) is set to 0.1 to 1.5 MPa, a heating temperature (b) is set to 50 to 250° C., and a product of the gauge pressure and the heating temperature, a×b, is set in the range of 20 to 100; (B) stopping the introduction of hydrogen to allow the reaction to proceed when the temperature in the reaction container is increased to a temperature higher by 10 to 100° C. than the heating temperature; (C) introducing hydrogen of 0.1 to 1.
    Type: Application
    Filed: September 25, 2014
    Publication date: August 25, 2016
    Applicant: TAIHEIYO CEMENT CORPORATION
    Inventors: Tetsuya ISHIMOTO, Shoji SUZUKI, Katsumi MATSUI, Tomoki HATSUMORI, Kazuhiko TOKOYODA
  • Patent number: 9302913
    Abstract: There is provided a method for producing a high-purity metal nitride by simple processes with good yield. Specifically provided is a method for producing a metal nitride including heating a metal hydride under a nitrogen gas or an ammonia gas.
    Type: Grant
    Filed: August 11, 2011
    Date of Patent: April 5, 2016
    Assignee: TAIHEIYO CEMENT CORPORATION
    Inventors: Kazuhiko Tokoyoda, Shoji Suzuki, Tomoki Hatsumori
  • Publication number: 20130129600
    Abstract: There is provided a method for producing a high-purity metal nitride by simple processes with good yield. Specifically provided is a method for producing a metal nitride including heating a metal hydride under a nitrogen gas or an ammonia gas.
    Type: Application
    Filed: August 11, 2011
    Publication date: May 23, 2013
    Applicant: TAIHEIYO CEMENT CORPORATION
    Inventors: Kazuhiko Tokoyoda, Shoji Suzuki, Tomoki Hatsumori