Patents by Inventor Hiromi KITAGAWA

Hiromi KITAGAWA 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).

  • Heat conductive sheet and method of producing same, and heat dissipation device
    Patent number: 10741470
    Abstract: Disclosed are a heat conductive sheet including a resin and a particulate carbon material, and having a thermal resistance value under a pressure of 0.05 MPa of 0.20° C./W or less, a heat dissipation device including the heat conductive sheet interposed between a heat source and a heat radiator, and a method of producing a heat conductive sheet.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: August 11, 2020
    Assignee: ZEON CORPORATION
    Inventors: Toyokazu Ito, Hiromi Kitagawa, Gen Kobayashi
  • Heat conductive sheet and method of producing same, and heat dissipation device
    Patent number: 10731067
    Abstract: Disclosed are a heat conductive sheet including a resin and a particulate carbon material, and having an Asker C hardness at 25° C. of 60 or more and a thermal resistance value under a pressure of 0.5 MPa of 0.20° C./W or less, a method of producing a heat conductive sheet, and a heat dissipation device including the heat conductive sheet interposed between a heat source and a heat radiator.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: August 4, 2020
    Assignee: ZEON CORPORATION
    Inventors: Toyokazu Ito, Hiromi Kitagawa, Gen Kobayashi
  • Heat conductive sheet
    Patent number: 10724810
    Abstract: Disclosed is a heat conductive sheet which comprises a flame retardant resin and a particulate carbon material, wherein the particulate carbon material has a particle size distribution in which a frequency of particles having a particle diameter of 30 ?m or more and 150 ?m or less is 20% or more, an amount of the particulate carbon material in the heat conductive sheet is 30% by mass or more, and a thickness of the heat conductive sheet is 50 ?m or more and 120 ?m or less. Preferably, the flame retardant resin is a combination of a flame retardant resin that is solid at ordinary temperature and ordinary pressure and a flame retardant resin that is liquid at ordinary temperature and ordinary pressure.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: July 28, 2020
    Assignee: ZEON CORPORATION
    Inventors: Toyokazu Ito, Hiromi Kitagawa
  • HEAT CONDUCTIVE SHEET AND METHOD OF PRODUCING SAME, AND HEAT DISSIPATION DEVICE
    Publication number: 20190244875
    Abstract: Disclosed are a heat conductive sheet including a resin and a particulate carbon material, and having a thermal resistance value under a pressure of 0.05 MPa of 0.20° C./W or less, a heat dissipation device including the heat conductive sheet interposed between a heat source and a heat radiator, and a method of producing a heat conductive sheet.
    Type: Application
    Filed: February 17, 2017
    Publication date: August 8, 2019
    Applicant: ZEON CORPORATION
    Inventors: Toyokazu ITO, Hiromi KITAGAWA, Gen KOBAYASHI
  • HEAT CONDUCTIVE SHEET AND METHOD OF PRODUCING SAME, AND HEAT DISSIPATION DEVICE
    Publication number: 20190048244
    Abstract: Disclosed are a heat conductive sheet including a resin and a particulate carbon material, and having an Asker C hardness at 25° C. of 60 or more and a thermal resistance value under a pressure of 0.5 MPa of 0.20° C./W or less, a method of producing a heat conductive sheet, and a heat dissipation device including the heat conductive sheet interposed between a heat source and a heat radiator.
    Type: Application
    Filed: February 17, 2017
    Publication date: February 14, 2019
    Applicant: ZEON CORPORATION
    Inventors: Toyokazu ITO, Hiromi KITAGAWA, Gen KOBAYASHI