Patents by Inventor Masashi KUNISHIGE

Masashi KUNISHIGE 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: 20240150577
    Abstract: It is desirable to provide a polyarylene sulfide resin composition excellent in resistance to heat and humidity and moldability without deteriorating physical properties such as mechanical strength. More specifically, the present invention is characterized by including a polyarylene sulfide resin, glass fibers having been subjected to surface treatment with a sizing agent including an epoxy resin and a polyether resin, and a silane coupling agent having a functional group, in which the total content of the epoxy resin and the polyether resin in the sizing agent is 65% to 100% by mass, and the isothermal crystallization time is 9 seconds or shorter.
    Type: Application
    Filed: December 16, 2021
    Publication date: May 9, 2024
    Applicant: DIC Corporation
    Inventors: Kunito Kurata, Masashi Kunishige, Nobuyuki Matsumoto, Tomomichi Kanda, Hiroaki Negishi
  • Publication number: 20230364836
    Abstract: A forced extraction molded article that can prevent damage during forced extraction is provided. The force extraction molded article (1) is formed of a polyarylene sulfide resin composition so as to include a cylindrical portion, wherein the cylindrical portion (10) has at a forward end portion a bulge (11), and an inner surface including a step in the outer diameter direction at the forward end portion, a portion excluding the step has a gradient such that the inner diameter of the cylindrical portion increases toward the forward end portion, and equation (a) below using a thickness D2 between a connection portion at the step on the inner surface of the cylindrical portion and the outer surface excluding the bulge, a height D4 of the step, and a height Dt of the gradient excluding the step on the inner surface of the cylindrical portion is satisfied. [ Equation ? 1 ] ? 0 . 0 ? 0 ? 1 ? D ? 2 2 - D ? 4 D ? 2 × D ? t D ? 2 ? 0 .
    Type: Application
    Filed: September 28, 2021
    Publication date: November 16, 2023
    Applicant: DIC Corporation
    Inventors: Ryuhei KUROKAWA, Masashi KUNISHIGE, Shinya GIBO