Patents by Inventor Kiwamu TONOSAKI

Kiwamu TONOSAKI 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).

  • Electrode active material for sodium secondary battery, electrode for sodium secondary battery, sodium secondary battery and method for producing composite metal oxide
    Patent number: 11233236
    Abstract: The present invention relates to an electrode active material for a sodium secondary battery, including: a composite metal oxide, in which the composite metal oxide is represented by Formula (1), and in a case where a peak intensity of a (200) plane of nickel oxide which is observed in the vicinity of 43° of a powder X-ray diffraction spectrum is set as I, and a peak intensity of a (104) plane of the composite metal oxide represented by Formula (1) which is observed in the vicinity of 41° to 42.5° is set as I0, I/I0 obtained by dividing I by I0 is 0.2 or less.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: January 25, 2022
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kiwamu Tonosaki, Takuya Matsunaga
  • Composite metal oxide, positive electrode active material, positive electrode, sodium secondary battery, and method for producing composite metal oxide
    Patent number: 11217789
    Abstract: Provided is a composite metal oxide which is represented by Formula (1) and has an ?-NaFeO2 type crystal structure, in which a peak half value width of a (104) plane to be measured by powder X-ray diffraction is 0.250° or less at 2?. NaxM1r(FeyNizMnwM1?y?z?w)O2±???(1) (in Formula (1), M represents any one or more elements selected from the group consisting of B, Si, V, Ti, Co, Mo, Pd, Re, Pb, and Bi, M1 represents any one or more elements selected from the group consisting of Mg and Ca, and relations 0?r?0.1, 0.5?x?1.0, 0.1?y?0.5, 0<z<0.4, 0<w<0.4, 0???0.05, and y+z+w?1 are satisfied).
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: January 4, 2022
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Kiwamu Tonosaki
  • ELECTRODE ACTIVE MATERIAL FOR SODIUM SECONDARY BATTERY, ELECTRODE FOR SODIUM SECONDARY BATTERY, SODIUM SECONDARY BATTERY AND METHOD FOR PRODUCING COMPOSITE METAL OXIDE
    Publication number: 20200119347
    Abstract: The present invention relates to an electrode active material for a sodium secondary battery, including: a composite metal oxide, in which the composite metal oxide is represented by Formula (1), and in a case where a peak intensity of a (200) plane of nickel oxide which is observed in the vicinity of 43° of a powder X-ray diffraction spectrum is set as I, and a peak intensity of a (104) plane of the composite metal oxide represented by Formula (1) which is observed in the vicinity of 41° to 42.5° is set as I0, I/I0 obtained by dividing I by I0 is 0.2 or less.
    Type: Application
    Filed: March 28, 2018
    Publication date: April 16, 2020
    Inventors: Kiwamu TONOSAKI, Takuya MATSUNAGA
  • COMPOSITE METAL OXIDE, POSITIVE ELECTRODE ACTIVE MATERIAL, POSITIVE ELECTRODE, SODIUM SECONDARY BATTERY, AND METHOD FOR PRODUCING COMPOSITE METAL OXIDE
    Publication number: 20200112023
    Abstract: Provided is a composite metal oxide which is represented by Formula (1) and has an ?-NaFeO2 type crystal structure, in which a peak half value width of a (104) plane to be measured by powder X-ray diffraction is 0.250° or less at 2?. NaxM1r(FeyNizMnwM1?y?z?w)O2±???(1) (in Formula (1), M represents any one or more elements selected from the group consisting of B, Si, V, Ti, Co, Mo, Pd, Re, Pb, and Bi, M1 represents any one or more elements selected from the group consisting of Mg and Ca, and relations 0?r?0.1, 0.5?x?1.0, 0.1?y?0.5, 0<z<0.4, 0<w<0.4, 0???0.
    Type: Application
    Filed: March 28, 2018
    Publication date: April 9, 2020
    Inventor: Kiwamu TONOSAKI