Patents by Inventor YOUJI SHIRATO

YOUJI SHIRATO 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).

  • Publication number: 20240300819
    Abstract: The problem to be overcome by the present disclosure is to provide a graphite sheet with the ability to lower the contact thermal resistance at the surface of the graphite sheet. In a graphite sheet, a plurality of graphite layers are stacked one on top of another in a thickness direction. The plurality of graphite layers includes: a first graphite layer that forms an outermost layer of the graphite sheet; and a second graphite layer other than the first graphite layer. At least a part of the second graphite layer is exposed through a surface of the first graphite layer. The graphite sheet has an apparent shear strength equal to or greater than 0.1 MPa and equal to or less than 0.5 MPa as measured by SAICAS method from a depth of 0.5 m to a depth of 19 m.
    Type: Application
    Filed: November 30, 2021
    Publication date: September 12, 2024
    Inventors: Youji SHIRATO, Norihiro KAWAMURA, Yuji YAMAGISHI, Mitsuru TAMAOKI
  • Patent number: 12087661
    Abstract: An object of the present disclosure is to provide a heat conducting sheet that can be easily positioned and can absorb unevenness of a heat generating component and a heat radiating component to reduce thermal resistance, and an electronic device using the same. Heat conducting sheet includes rectangular graphite sheet and attachment sheet that covers graphite sheet, graphite sheet being exposed at least two opposite sides. Graphite sheet is exposed from between attachment sheets, a thickness of attachment sheet is made thinner than (T0?T1) where an initial thickness of graphite sheet is T0, and a thickness when a pressure of 100 kPa is applied to the graphite sheet is T1.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: September 10, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akihito Konishi, Norihiro Kawamura, Youji Shirato, Naoki Saitou
  • Publication number: 20240114661
    Abstract: A thermal conductive member includes a thermal conductive sheet and an adhesive member. The adhesive member is stacked on a front surface of the thermal conductive sheet. An adhesive force of the adhesive member decreases along with a temperature rise.
    Type: Application
    Filed: September 25, 2023
    Publication date: April 4, 2024
    Inventors: Youji SHIRATO, Norihiro KAWAMURA
  • Publication number: 20230352365
    Abstract: A thermoconductive material includes a carbonaceous substance as a main component and has a plurality of screw insertion portions into which a plurality of screws are to be inserted on a one-to-one basis in a thickness direction defined with respect to the thermoconductive material. The thermoconductive material includes an inside region located at a side of a central portion of the thermoconductive material with respect to the plurality of screw insertion portions and an outside region located at a side of an outer edge portion of the thermoconductive material with respect to the inside region. The outside region includes a support portion which is at least part of the outside region. When a pressure of 500 kPa is applied in the thickness direction, an outside thickness which is a thickness of the support portion is greater than an inside thickness which is a greatest thickness of the inside region.
    Type: Application
    Filed: September 10, 2021
    Publication date: November 2, 2023
    Inventors: Youji SHIRATO, Norihiro KAWAMURA, Masaya HATTORI
  • Publication number: 20230247806
    Abstract: An electrical device according to the present disclosure includes a heat generator, a heat dissipator, a thermal conductive sheet, and a thermal conductive fluid. The heat generator has a first surface. The heat dissipator has a second surface that faces the first surface. The thermal conductive sheet and the thermal conductive fluid are both interposed between the first surface and the second surface. The first surface and the second surface face each other in their respective counter regions. Each of the counter regions includes a first region and a second region when viewed in a direction in which the first and second surfaces face each other. The first region holds the thermal conductive fluid but does not receive the thermal conductive sheet. The second region is adjacent to the first region and receives the thermal conductive sheet.
    Type: Application
    Filed: January 19, 2023
    Publication date: August 3, 2023
    Inventors: Youji SHIRATO, Naoki SAITOU, Norihiro KAWAMURA
  • Publication number: 20230032968
    Abstract: A graphite composite includes a graphite sheet having a void inside and a resin member. The void is partially filled by at least a part of the resin member in its entirety. The proportion of the resin member to the sum of the graphite sheet and the resin member is equal to or greater than 5% by mass. The graphite composite has a porosity equal to or greater than 50% by volume and equal to or less than 95% by volume.
    Type: Application
    Filed: July 28, 2022
    Publication date: February 2, 2023
    Inventors: Youji Shirato, Norihiro Kawamura, Yoshifumi Ilmuro
  • Publication number: 20220059431
    Abstract: An object of the present disclosure is to provide a heat conducting sheet that can be easily positioned and can absorb unevenness of a heat generating component and a heat radiating component to reduce thermal resistance, and an electronic device using the same. Heat conducting sheet includes rectangular graphite sheet and attachment sheet that covers graphite sheet, graphite sheet being exposed at least two opposite sides. Graphite sheet is exposed from between attachment sheets, a thickness of attachment sheet is made thinner than (T0-T1) where an initial thickness of graphite sheet is T0, and a thickness when a pressure of 100 kPa is applied to the graphite sheet is T1.
    Type: Application
    Filed: January 15, 2020
    Publication date: February 24, 2022
    Inventors: AKIHITO KONISHI, NORIHIRO KAWAMURA, YOUJI SHIRATO, NAOKI SAITOU