Patents by Inventor Takahiro HIGUMA

Takahiro HIGUMA 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: 20230272203
    Abstract: An acrylic rubber composition that includes a blend product of an acrylic rubber [I] containing a copolymer of an ethyl acrylate/n-butyl acrylate/2-methoxyethyl acrylate/carboxyl group-containing vinyl monomer, and an acrylic rubber [II] containing a copolymer of an alkoxyalkyl acrylate/2-ethylhexyl acrylate/alkyl methacrylate/ethyl acrylate/carboxyl group-containing vinyl monomer; the blend product being compounded with silica and a plasticizer.
    Type: Application
    Filed: July 26, 2021
    Publication date: August 31, 2023
    Applicant: NOK CORPORATION
    Inventors: Takahiro HIGUMA, Takuto SHIMAMURA
  • Publication number: 20230257559
    Abstract: A fluororubber composition comprising 5 to 30 parts by weight of carbon black having an iodine adsorption of 70 mg/g or more, 5 to 20 parts by weight of carbon fiber having an average fiber diameter of 5 to 20 ?m and an aspect ratio of 2 to 10, and 3 to 20 parts by weight of PTFE, based on 100 parts by weight of fluororubber. The crosslinked molded article obtained from the fluororubber composition exhibits excellent effects of imparting oil film retention by using carbon fiber with specific properties, and improving abrasion resistance in unlubricated conditions by using the carbon fiber in combination with PTFE as a solid lubricant.
    Type: Application
    Filed: June 17, 2021
    Publication date: August 17, 2023
    Applicant: NOK CORPORATION
    Inventors: Takahiro HIGUMA, Hirokazu MAEKAWA
  • Publication number: 20230022910
    Abstract: A fluororubber composition comprising 3 to 20 parts by weight of carbon fibers and 1 to 8 parts by weight of carbon nanotubes based on 100 parts by weight of fluororubber. The crosslinked molded article obtained from the fluororubber composition has excellent effects of not only imparting oil film retention, but also improving the material strength of fluororubber due to the combined use of carbon nanotubes, which have high reinforcing properties. Further, the fluororubber composition can give a fluororubber crosslinked product excellent in abrasion resistance and pressure resistance.
    Type: Application
    Filed: December 14, 2020
    Publication date: January 26, 2023
    Applicant: NOK CORPORATION
    Inventors: Takahiro HIGUMA, Hirokazu MAEKAWA
  • Publication number: 20170146412
    Abstract: An object of the present invention is to provide a pressure-sensitive responsive laminate excellent in durability at the repeated use, and further which can ensure change in resistance values at the unloaded time and at the time of applying a load with a large width, a coating layer which can be used for the pressure-sensitive responsive laminate, and a pressure-sensitive responsivity-imparting material which imparts pressure-sensitive responsivity to a conductive substrate, and the object can be solved by a pressure-sensitive responsive laminate which comprises a coating layer being laminated onto a conductive substrate, and unevenness derived from non-conductive particles included in the coating layer being formed onto a surface of the coating layer; a coating layer which comprises non-conductive particles, unevenness derived from the non-conductive particles being formed onto a surface thereof, and pressure-sensitive responsivity being imparted by being laminated onto a conductive substrate; and a pressure
    Type: Application
    Filed: June 15, 2015
    Publication date: May 25, 2017
    Applicant: NOK Corporation
    Inventors: Takahiro HIGUMA, Toshihiro HIGASHIRA