Patents by Inventor Masaya Sugafuji

Masaya Sugafuji 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 electrolytic secondary battery
    Patent number: 7399555
    Abstract: A non-aqueous electrolyte secondary battery comprising: an electrode plate assembly; a non-aqueous electrolyte; and an outer jacket accommodating the electrode plate assembly and the non-aqueous electrolyte therein, the electrode plate assembly comprising a positive electrode plate, a negative electrode plate and a separator interposed between the positive electrode plate and the negative electrode plate, the separator comprising a polyolefin resin, wherein (1) the separator comprises at least one layer comprising a polypropylene resin, (2) the layer comprising a polypropylene resin contains an antioxidant with a melting point of 60° C. or higher, and (3) the layer comprising a polypropylene resin and the positive electrode are in contact with one another.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: July 15, 2008
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideki Sano, Masaya Sugafuji, Norihiro Yamamoto, Masaki Kitagawa, Kiyomi Kato, Hiroshi Matsuno, Jun Nunome, Yutaka Kawatate
  • Non-aqueous electrolytic secondary battery
    Publication number: 20050118510
    Abstract: A non-aqueous electrolyte secondary battery comprising: an electrode plate assembly; a non-aqueous electrolyte; and an outer jacket accommodating the electrode plate assembly and the non-aqueous electrolyte therein, the electrode plate assembly comprising a positive electrode plate, a negative electrode plate and a separator interposed between the positive electrode plate and the negative electrode plate, the separator comprising a polyolefin resin, wherein (1) the separator comprises at least one layer comprising a polypropylene resin, (2) the layer comprising a polypropylene resin contains an antioxidant with a melting point of 60° C. or higher, and (3) the layer comprising a polypropylene resin and the positive electrode are in contact with one another.
    Type: Application
    Filed: June 11, 2002
    Publication date: June 2, 2005
    Inventors: Hideki Sano, Masaya Sugafuji, Norihiro Yamamoto, Masaki Kitagawa, Kiyomi Kato, Hiroshi Matsuno, Jun Nunome, Yutaka Kawatate