Patents by Inventor Kazuro Hayashida

Kazuro Hayashida 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).

  • Negative electrode active material for non-aqueous electrolyte secondary cell, and non-aqueous electrolyte secondary cell
    Patent number: 11715822
    Abstract: Negative electrode active material particles comprise base particles having: a silicate phase containing Li2O, SiO2, at least one oxide selected from M12O3, M2O2, M32O5, and M4O3 (where M1, M2, M3, and M4 are elements other than alkali metals, alkali earth metals, and Si), and a discretionary component MO (where M is an alkali earth metal); and silicon particles dispersed in the silicate phase. The element contents for the elements contained in the silicate phase are: 3-33 mol % of Li; 40-78 mol % of S; and 1-40 mol % of M1, M2, M3, and M4. If MO is contained, the M content in the silicate phase is 1-10 mol %.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: August 1, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Norihisa Yamamoto, Yohei Uchiyama, Tatsuya Akira, Kazuro Hayashida
  • Negative electrode active material for lithium ion battery, and lithium ion battery
    Patent number: 11670772
    Abstract: Negative electrode active material particles according to the present invention have composite particles that include: a sodium silicate phase with a Vickers hardness of 150 Hv or greater, and silicon particles dispersed in the sodium silicate phase.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: June 6, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yohei Uchiyama, Norihisa Yamamoto, Tatsuya Akira, Kazuro Hayashida
  • NEGATIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY CELL, AND NON-AQUEOUS ELECTROLYTE SECONDARY CELL
    Publication number: 20210202930
    Abstract: Negative electrode active material particles comprise base particles having: a silicate phase containing Li2O, SiO2, at least one oxide selected from M12O3, M2O2, M32O5, and M4O3 (where M1, M2, M3, and M4 are elements other than alkali metals, alkali earth metals, and Si), and a discretionary component MO (where M is an alkali earth metal); and silicon particles dispersed in the silicate phase. The element contents for the elements contained in the silicate phase are: 3-33 mol % of Li; 40-78 mol % of S; and 1-40 mol % of M1, M2, M3, and M4. If MO is contained, the M content in the silicate phase is 1-10 mol %.
    Type: Application
    Filed: September 26, 2018
    Publication date: July 1, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Norihisa Yamamoto, Yohei Uchiyama, Tatsuya Akira, Kazuro Hayashida
  • Negative electrode material for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery
    Patent number: 10950852
    Abstract: A negative electrode material for a non-aqueous electrolyte secondary battery includes: a lithium silicate phase including lithium silicate particles; silicon particles dispersed in the lithium silicate phase; and a low-melting point inorganic oxide that has a lower melting point than lithium silicate forming the lithium silicate particles, and that is solid at room temperature. The lithium silicate particles and the silicon particles form a particle agglomerate, and the low-melting point inorganic oxide is filled in at least a portion of voids included in the particle agglomerate.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: March 16, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kazuro Hayashida, Daisuke Katou
  • NEGATIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION BATTERY, AND LITHIUM ION BATTERY
    Publication number: 20200365898
    Abstract: Negative electrode active material particles according to the present invention have composite particles that include: a sodium silicate phase with a Vickers hardness of 150 Hv or greater, and silicon particles dispersed in the sodium silicate phase.
    Type: Application
    Filed: October 26, 2018
    Publication date: November 19, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Uchiyama, Norihisa Yamamoto, Tatsuya Akira, Kazuro Hayashida
  • NEGATIVE ELECTRODE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    Publication number: 20200035999
    Abstract: A negative electrode material for a non-aqueous electrolyte secondary battery includes: a lithium silicate phase including lithium silicate particles; silicon particles dispersed in the lithium silicate phase; and a low-melting point inorganic oxide that has a lower melting point than lithium silicate forming the lithium silicate particles, and that is solid at room temperature. The lithium silicate particles and the silicon particles form a particle agglomerate, and the low-melting point inorganic oxide is filled in at least a portion of voids included in the particle agglomerate.
    Type: Application
    Filed: February 16, 2018
    Publication date: January 30, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kazuro Hayashida, Daisuke Katou