Patents by Inventor Kazusa Ohkubo

Kazusa Ohkubo 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).

  • Nonaqueous electrolyte battery
    Patent number: 8501356
    Abstract: An additive typified by tris(trimethylsilyl)phosphate, tris(trimethylsilyl)borate, and tetrakis(trimethylsiloxy)titanium (Chem. 3) are applied to a nonaqueous electrolyte containing a chain carbonate and/or a chain carboxylate as a main solvent (contained at a ratio of 70 volume % or higher). It is preferable that 0?a<30 is satisfied, in which “a” denotes the volume of a cyclic carbonate among carbonates having no carbon-carbon double bond in the entire volume, defined as 100, of the carbonates having no carbon-carbon double bond and chain carboxylates in a nonaqueous solvent contained in the nonaqueous electrolyte (0<a<30 in the case no chain carboxylate is contained).
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: August 6, 2013
    Assignee: GS Yuasa International Ltd.
    Inventors: Kazusa Ohkubo, Koji Sukino, Shigeki Yamate, Suguru Kozono, Yoshihiro Katayama, Toshiyuki Nukuda
  • NONAQUEOUS ELECTROLYTE BATTERY
    Publication number: 20110027663
    Abstract: An additive typified by tris(trimethylsilyl)phosphate, tris(trimethylsilyl)borate, and tetrakis(trimethylsiloxy)titanium (Chem. 3) are applied to a nonaqueous electrolyte containing a chain carbonate and/or a chain carboxylate as a main solvent (contained at a ratio of 70 volume % or higher). It is preferable that 0?a<30 is satisfied, in which “a” denotes the volume of a cyclic carbonate among carbonates having no carbon-carbon double bond in the entire volume, defined as 100, of the carbonates having no carbon-carbon double bond and chain carboxylates in a nonaqueous solvent contained in the nonaqueous electrolyte (0<a<30 in the case no chain carboxylate is contained).
    Type: Application
    Filed: March 4, 2009
    Publication date: February 3, 2011
    Inventors: Kazusa Ohkubo, Koji Sukino, Shigeki Yamate, Suguru Kozono, Yoshihiro Katayama, Toshiyuki Nukuda