Patents by Inventor Masayuki Tsunekawa

Masayuki Tsunekawa 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).

  • Publication number: 20050069767
    Abstract: There is disclosed an electrode plate for a nonaqueous electrolyte secondary battery, which comprises a collector and an active material layer provided on at least one side of the collector, in which the active material layer has one or more slits. Such an electrode plate can facilitate infiltration of a liquid electrolyte even when wound at high density and can have high stability of quality. There is also disclosed a nonaqueous electrolyte secondary battery with high capacity and high quality, which is constructed using the above-mentioned electrode plate.
    Type: Application
    Filed: September 22, 2004
    Publication date: March 31, 2005
    Inventors: Masayuki Tsunekawa, Tadafumi Shindo
  • Publication number: 20050031961
    Abstract: The present invention provides an electrode plate for a battery which prevents an electrode active material layer from being chipped and a collector from being broken on a course of production process and can be produced with large yield, processes for producing thereof, and a nonaqueous electrolyte battery using the electrode plate. A first electrode active material layer is formed intermittently on one surface of a sheet-like collector made of metal, and an electrode active material layer is formed intermittently on the other surface of the collector, wherein a starting position of the coating section is set so as to have a positional relationship in which it is 0.5 to 2.9 mm off from a starting side of the coated section of the first electrode active material layer on the one surface and shifted to a finishing side thereof.
    Type: Application
    Filed: December 30, 2003
    Publication date: February 10, 2005
    Inventors: Masayuki Tsunekawa, Yuichi Miyazaki, Shin Miyanowaki