Patents by Inventor Yasuko Nozaki

Yasuko Nozaki 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).

  • Non-aqueous electrolyte secondary battery and non-aqueous electrolyte
    Patent number: 11973188
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The non-aqueous electrolyte contains a lithium salt and a carboxylic acid, and the lithium salt includes lithium difluorophosphate. The content of the carboxylic acid in the non-aqueous electrolyte is 5 ppm or more and 900 ppm or less with respect to the mass of the non-aqueous electrolyte.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: April 30, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yasuko Nozaki, Tasuku Ishiguro, Tomohisa Okazaki
  • NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    Publication number: 20220238919
    Abstract: A non-aqueous electrolyte secondary battery having a positive electrode, a separator, a negative electrode opposed to the positive electrode via the separator, and a liquid electrolyte wherein the liquid electrolyte includes a lithium salt, methyl acetate, and dimethyl sulfone. The content ratio of methyl acetate in the liquid electrolyte is 10% by mass to 40% by mass, and the content ratio of dimethyl sulfone in the liquid electrolyte is 0.1% by mass to 5% by mass.
    Type: Application
    Filed: May 21, 2020
    Publication date: July 28, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tasuku Ishiguro, Yasuko Nozaki
  • NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND ELECTROLYTE SOLUTION USED IN SAME
    Publication number: 20220123367
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode and a liquid electrolyte, wherein the liquid electrolyte contains lithium bis(fluorosulfonyl)imide and dimethyl sulfate.
    Type: Application
    Filed: December 18, 2019
    Publication date: April 21, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yasuko Nozaki, Tasuku Ishiguro, Tomohisa Okazaki
  • NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND ELECTROLYTIC SOLUTION USED THEREFOR
    Publication number: 20220115700
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode and a liquid electrolyte, wherein the liquid electrolyte contains a lithium salt and isopropyl acetate, and the lithium salt includes lithium bis(fluorosulfonyl)imide, and a content of isopropyl acetate in the liquid electrolyte is 1000 ppm or less with respect to a mass of the liquid electrolyte.
    Type: Application
    Filed: January 6, 2020
    Publication date: April 14, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tasuku Ishiguro, Yasuko Nozaki, Tomohisa Okazaki
  • NON-AQUEOUS ELECTROLYTE SECONDARY CELL AND ELECTROLYTIC SOLUTION USED IN SAME
    Publication number: 20220109186
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode and a liquid electrolyte, wherein the liquid electrolyte contains lithium bis(fluorosulfonyl)imide and 1,4-dioxane.
    Type: Application
    Filed: December 2, 2019
    Publication date: April 7, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tomohisa Okazaki, Tasuku Ishiguro, Yasuko Nozaki
  • NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND NON-AQUEOUS ELECTROLYTE
    Publication number: 20220006120
    Abstract: A non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte. The non-aqueous electrolyte contains a lithium salt and a carboxylic acid, and the lithium salt includes lithium difluorophosphate. The content of the carboxylic acid in the non-aqueous electrolyte is 5 ppm or more and 900 ppm or less with respect to the mass of the non-aqueous electrolyte.
    Type: Application
    Filed: October 30, 2019
    Publication date: January 6, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yasuko Nozaki, Tasuku Ishiguro, Tomohisa Okazaki
  • NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, ELECTROLYTE SOLUTION, AND METHOD FOR PRODUCING NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    Publication number: 20210050625
    Abstract: Disclosed is a non-aqueous electrolyte secondary battery including: a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and an electrolyte solution, wherein the electrolyte solution includes a lithium salt and carboxylic acid, and the lithium salt includes lithium bis(fluorosulfonyl)imide: LiN(SO2F)2.
    Type: Application
    Filed: January 10, 2019
    Publication date: February 18, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yasuko Nozaki, Satoshi Nishitani, Chisaki Fujitomo, Masaki Deguchi
  • NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, ELECTROLYTE SOLUTION, AND METHOD FOR PRODUCING NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    Publication number: 20210036367
    Abstract: Disclosed is a non-aqueous electrolyte secondary battery including: a positive electrode, a negative electrode, a separator interposed between the positive electrode and the negative electrode, and an electrolyte solution, wherein the electrolyte solution includes a solvent, a solute, and a carboxylic anhydride, the solvent includes a carboxylic acid ester compound, and the solute includes a sulfonyl imide compound.
    Type: Application
    Filed: January 10, 2019
    Publication date: February 4, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Chisaki Fujitomo, Satoshi Nishitani, Yasuko Nozaki, Masaki Deguchi