Patents by Inventor Hanako Miyasaka

Hanako Miyasaka 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).

  • Method for producing nonaqueous electrolyte secondary battery
    Patent number: 8211336
    Abstract: Disclosed is a nonaqueous electrolyte secondary battery which is suppressed in increase of internal resistance, while having high capacity retention rate and small battery swelling even after a long use. Specifically disclosed is a method for manufacturing a nonaqueous electrolyte secondary battery, which is characterized by using a positive electrode containing a positive electrode active material having an ?-NaFeO2 crystal structure and the following chemical composition: LixMnaNibCocOd (wherein 0<x<1.3, a+b+c=1, 1.7?d?2.3), while satisfying |a?b|<0.03 and 0.33?c<1, a negative electrode, and a nonaqueous electrolyte containing an unsaturated sultone and a sulfate ester compound.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: July 3, 2012
    Assignee: GS Yuasa International Ltd.
    Inventors: Hanako Miyasaka, Takaaki Iguchi, Junichi Kuratomi, Sumio Mori
  • Method for producing nonaqueous electrolyte secondary battery
    Publication number: 20100018034
    Abstract: Disclosed is a nonaqueous electrolyte secondary battery which is suppressed in increase of internal resistance, while having high capacity retention rate and small battery swelling even after a long use. Specifically disclosed is a method for manufacturing a nonaqueous electrolyte secondary battery, which is characterized by using a positive electrode containing a positive electrode active material having an ?-NaFeO2 crystal structure and the following chemical composition: LixMnaNibCocOd (wherein 0<x<1.3, a+b+c=1, 1.7?d?2.3), while satisfying |a?b|<0.03 and 0.33?c<1, a negative electrode, and a nonaqueous electrolyte containing an unsaturated sultone and a sulfate ester compound.
    Type: Application
    Filed: September 7, 2007
    Publication date: January 28, 2010
    Applicant: GS YUASA CORPORATION
    Inventors: Hanako Miyasaka, Takaaki Iguchi, Junichi Kuratomi, Sumio Mori