Patents by Inventor Takefumi Osasa

Takefumi Osasa 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 and assembled battery using the rectangular secondary battery
    Patent number: 10847761
    Abstract: A rectangular secondary battery includes a rectangular outer packaging body that has an opening; a sealing plate that seals the opening of the rectangular outer packaging body; and an electrode body that is arranged inside the rectangular outer packaging body and that includes a positive electrode plate and a negative electrode plate. A gas exhaust valve is formed at a center portion of the sealing plate in the longitudinal direction. In the longitudinal direction of the sealing plate, a first identification code is provided closer than the gas exhaust valve to one end portion of the sealing plate. In the longitudinal direction, a second identification code is provided closer than the gas exhaust valve to the other end portion of the sealing plate. The first identification code and the second identification code include identical information.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: November 24, 2020
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Takefumi Osasa, Atsushi Tsuji, Yoshinori Ikeuchi
  • RECTANGULAR SECONDARY BATTERY AND ASSEMBLED BATTERY USING THE RECTANGULAR SECONDARY BATTERY
    Publication number: 20190036087
    Abstract: A rectangular secondary battery includes a rectangular outer packaging body that has an opening; a sealing plate that seals the opening of the rectangular outer packaging body; and an electrode body that is arranged inside the rectangular outer packaging body and that includes a positive electrode plate and a negative electrode plate. A gas exhaust valve is formed at a center portion of the sealing plate in the longitudinal direction. In the longitudinal direction of the sealing plate, a first identification code is provided closer than the gas exhaust valve to one end portion of the sealing plate. In the longitudinal direction, a second identification code is provided closer than the gas exhaust valve to the other end portion of the sealing plate. The first identification code and the second identification code include identical information.
    Type: Application
    Filed: July 24, 2018
    Publication date: January 31, 2019
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Takefumi Osasa, Atsushi Tsuji, Yoshinori Ikeuchi