Patents by Inventor Ryuji OSHITA

Ryuji OSHITA 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).

  • Sealed battery with electrode terminal welded to current collector, and manufacturing method for the same
    Patent number: 8439983
    Abstract: Provided is a sealed battery that can offer excellent battery performances by having its electrode terminal and a current collector securely welded to each other, and its manufacturing method. The sealed battery is formed by hermetically sealing a casing storing an electrode assembly and the current collector, wherein: the electrode assembly formed by layering positive and negative electrode plates with a separator sandwiched therebetween is electrically connected to the current collector; and a shaft portion of the electrode terminal penetrates through the current collector. A part of the electrode terminal projecting out from a pass-through of the current collector is a (conical) frustum-shaped portion whose bottom base is in contact with the current collector. The frustum-shaped portion is pressed against the current collector, and the frustum-shaped portion and the current collector are welded together in at least one area on a perimeter of the bottom base of the frustum-shaped portion.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: May 14, 2013
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Eiji Okutani, Atsushi Obayashi, Tomokazu Yamanaka, Yoshikumi Miyamoto, Ryuji Oshita
  • SEALED BATTERY WITH ELECTRODE TERMINAL WELDED TO CURRENT COLLECTOR, AND MANUFACTURING METHOD FOR THE SAME
    Publication number: 20080241679
    Abstract: Provided is a sealed battery that can offer excellent battery performances by having its electrode terminal and a current collector securely welded to each other, and its manufacturing method. The sealed battery is formed by hermetically sealing a casing storing an electrode assembly and the current collector, wherein: the electrode assembly formed by layering positive and negative electrode plates with a separator sandwiched therebetween is electrically connected to the current collector; and a shaft portion of the electrode terminal penetrates through the current collector. A part of the electrode terminal projecting out from a pass-through of the current collector is a (conical) frustum-shaped portion whose bottom base is in contact with the current collector. The frustum-shaped portion is pressed against the current collector, and the frustum-shaped portion and the current collector are welded together in at least one area on a perimeter of the bottom base of the frustum-shaped portion.
    Type: Application
    Filed: March 31, 2008
    Publication date: October 2, 2008
    Applicant: SANYO ELETRIC CO., LTD.
    Inventors: Eiji OKUTANI, Atsushi OBAYASHI, Tomokazu YAMANAKA, Yoshikumi MIYAMOTO, Ryuji OSHITA