Patents by Inventor Emi TSUTSUI

Emi TSUTSUI 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).

  • Secondary battery
    Patent number: 10541400
    Abstract: A secondary battery includes an electrode body and an electrolytic solution, the electrode body including a positive electrode, a negative electrode, and a separator. The separator includes a resin substrate that has a multi-layer structure including a porous polyethylene layer and a porous high melting point resin layer, the porous polyethylene layer including a polyethylene resin and being disposed to face the negative electrode, and the porous high melting point resin layer including a resin having a higher melting point than the polyethylene resin. The porosity of the porous polyethylene layer is 2% to 5%. A ratio of the thickness of the porous polyethylene layer to the total thickness of the resin substrate is 0.048 to 0.091.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: January 21, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Emi Tsutsui
  • SECONDARY BATTERY
    Publication number: 20180090732
    Abstract: A secondary battery includes an electrode body and an electrolytic solution, the electrode body including a positive electrode, a negative electrode, and a separator. The separator includes a resin substrate that has a multi-layer structure including a porous polyethylene layer and a porous high melting point resin layer, the porous polyethylene layer including a polyethylene resin and being disposed to face the negative electrode, and the porous high melting point resin layer including a resin having a higher melting point than the polyethylene resin. The porosity of the porous polyethylene layer is 2% to 5%. A ratio of the thickness of the porous polyethylene layer to the total thickness of the resin substrate is 0.048 to 0.091.
    Type: Application
    Filed: September 21, 2017
    Publication date: March 29, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Emi TSUTSUI