Patents by Inventor Ryou SAKIMOTO

Ryou SAKIMOTO 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).

  • Polyolefin micro-porous film and power-storage device
    Patent number: 11837751
    Abstract: This polyolefin micro-porous film includes a multilayered structure, wherein the multilayered structure contains a first layer composed of polypropylene resin, a second layer composed of polyethylene resin and provided on the first layer, and a third layer composed of polypropylene resin and provided on the second layer. Furthermore, a thickness of the first layer is thinner than a thickness of the second layer, a thickness of the third layer is thinner than the thickness of the second layer, and in the multilayered structure, a thickness is 16 ?m or less, a porosity is 40 to 70%, and a surface opening ratio is 10 to 30%.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: December 5, 2023
    Assignee: UBE CORPORATION
    Inventors: Taiga Adachi, Ryou Sakimoto
  • Polyolefin porous film, separator for energy storage device, and energy storage device
    Patent number: 11728100
    Abstract: A polyolefin porous film is provided, the film comprising a polyethylene-based resin, wherein a weight average molecular weight of the polyethylene-based resin is 450,000 or less, and a content of a high molecular weight component having a molecular weight of 1,000,000 or more in the polyethylene-based resin is 2 to 11% by mass.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: August 15, 2023
    Assignee: UBE CORPORATION
    Inventors: Takanobu Mimura, Ryou Sakimoto
  • POLYOLEFIN MICRO-POROUS FILM AND POWER-STORAGE DEVICE
    Publication number: 20220102811
    Abstract: This polyolefin micro-porous film includes a multilayered structure, wherein the multilayered structure contains a first layer composed of polypropylene resin, a second layer composed of polyethylene resin and provided on the first layer, and a third layer composed of polypropylene resin and provided on the second layer. Furthermore, a thickness of the first layer is thinner than a thickness of the second layer, a thickness of the third layer is thinner than the thickness of the second layer, and in the multilayered structure, a thickness is 16 ?m or less, a porosity is 40 to 70%, and a surface opening ratio is 10 to 30%.
    Type: Application
    Filed: December 26, 2019
    Publication date: March 31, 2022
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Taiga ADACHI, Ryou SAKIMOTO
  • POLYOLEFIN POROUS FILM, SEPARATOR FOR ENERGY STORAGE DEVICE, AND ENERGY STORAGE DEVICE
    Publication number: 20200313136
    Abstract: A polyolefin porous film is provided, the film comprising a polyethylene-based resin, wherein a weight average molecular weight of the polyethylene-based resin is 450,000 or less, and a content of a high molecular weight component having a molecular weight of 1,000,000 or more in the polyethylene-based resin is 2 to 11% by mass.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 1, 2020
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Takanobu MIMURA, Ryou SAKIMOTO