Patents by Inventor Kazusa Yukimoto

Kazusa Yukimoto 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).

  • Patent number: 7875395
    Abstract: A nonaqueous electrolytic cell manufacturing method is characterized in that a nonaqueous electrolyte containing vinylene carbonate is used, a coating on the surface of the negative electrode is formed at the initial charging/discharging in such a way by lowering the negative electrode potential to less than 0.4 V with relative to the lithium potential, wherein the nonaqueous electrolytic cell comprises a nonaqueous electrolyte containing an electrolytic salt and a nonaqueous solvent, a positive electrode, and a negative electrode containing a negative electrode material into/from which lithium ions are inserted/desorbed at a potential higher than the lithium potential by 1.2 V. The nonaqueous electrolytic cell is used in a range of negative electrode potential nobler than the lithium potential by 0.8 V.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: January 25, 2011
    Assignee: GS Yuasa Corporation
    Inventors: Suguru Kozono, Kazusa Yukimoto, Shigeki Yamate, Taro Yamafuku, Yoshihiro Katayama, Atsushi Funabiki, Toshiyuki Nukuda
  • Publication number: 20100178570
    Abstract: The invention aims to suppress gas generation in a nonaqueous electrolytic cell having a negative electrode containing negative active material such as lithium titanate and particularly suppress swelling in a nonaqueous electrolytic cell by suppressing gas generation at the time of storage at a high temperature. The nonaqueous electrolytic cell comprises a nonaqueous electrolyte containing an electrolytic salt and a nonaqueous solvent, a positive electrode, and a negative electrode containing a negative electrode material into/from which lithium ions are inserted/extracted at a potential higher than the lithium potential by 1.2 V. The nonaqueous electrolytic cell is characterized in that the nonaqueous electrolyte contains vinylene carbonate, the negative electrode has a coat thereon, and the nonaqueous electrolytic cell is used in a range of negative electrode potential nobler than the lithium potential by 0.8 V.
    Type: Application
    Filed: August 31, 2007
    Publication date: July 15, 2010
    Applicant: GS YUASA CORPORATION
    Inventors: Suguru Kozono, Kazusa Yukimoto, Shigeki Yamate, Taro Yamafuku, Yoshihiro Katayama, Atsushi Funabiki, Toshiyuki Nukuda