Patents by Inventor Kohtaroh IKEDA

Kohtaroh IKEDA 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).

  • Rectangular secondary battery
    Patent number: 11728518
    Abstract: Provided is a rectangular secondary cell enabling seal performance of a gasket to be improved with a simple structure without enlarging a shaft of a terminal. A rectangular secondary cell according to the present invention includes a cell can housing a winding group and having an opening portion, a lid provided with a positive electrode terminal electrically connected to the winding group and closing the opening portion, and a gasket having an interposed portion interposed between the lid and a lower surface of the positive electrode terminal. In the gasket, an external shape of the interposed portion is smaller than an external shape of the lower surface of the positive electrode terminal.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: August 15, 2023
    Assignee: Vehicle Energy Japan Inc.
    Inventors: Kohtaroh Ikeda, Kouichi Kajiwara
  • Rectangular Secondary Battery
    Publication number: 20180062123
    Abstract: Provided is a rectangular secondary cell enabling seal performance of a gasket to be improved with a simple structure without enlarging a shaft of a terminal. A rectangular secondary cell according to the present invention includes a cell can housing a winding group and having an opening portion, a lid provided with a positive electrode terminal electrically connected to the winding group and closing the opening portion, and a gasket having an interposed portion interposed between the lid and a lower surface of the positive electrode terminal. In the gasket, an external shape of the interposed portion is smaller than an external shape of the lower surface of the positive electrode terminal.
    Type: Application
    Filed: March 28, 2016
    Publication date: March 1, 2018
    Inventors: Kohtaroh IKEDA, Kouichi KAJIWARA