Patents by Inventor Shohei YANAGISAWA

Shohei YANAGISAWA 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).

  • One-component type thermosetting adhesive composition and body structure for vehicle applying the same
    Patent number: 10774247
    Abstract: The present invention provides a one-component type thermosetting adhesive composition used as an automotive structural adhesive having high damping performance without reducing adhesive strength and having excellent low-temperature curability and a body structure for vehicle, on which the one-component type thermosetting adhesive composition is applied. The present invention relates to a one-component type thermosetting adhesive composition comprising an epoxy resin and an amine-based latent curing agent, wherein the epoxy resin comprises: (1) a dibasic acid ester-based epoxy resin, (2) a butadiene-acrylonitrile copolymer modified epoxy resin, and (3) an unmodified bisphenol A type epoxy resin, and wherein a thermally cured product formed from the composition has: a loss tangent tan ? at 23° C. of not less than 0.2 as a damping performance, and a Young's modulus of not less than 50 MPa, and a body structure for vehicle, on which the one-component type thermosetting adhesive composition is applied.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: September 15, 2020
    Assignees: SUNSTAR ENGINEERING INC., MAZDA MOTOR CORPORATION
    Inventors: Takatomi Nishida, Shohei Yanagisawa, Katsuya Himuro, Kenichi Yamamoto, Motoyasu Asakawa, Tomoya Yoshida
  • ONE-COMPONENT TYPE THERMOSETTING ADHESIVE COMPOSITION AND BODY STRUCTURE FOR VEHICLE APPLYING THE SAME
    Publication number: 20190062611
    Abstract: The present invention provides a one-component type thermosetting adhesive composition used as an automotive structural adhesive having high damping performance without reducing adhesive strength and having excellent low-temperature curability and a body structure for vehicle, on which the one-component type thermosetting adhesive composition is applied. The present invention relates to a one-component type thermosetting adhesive composition comprising an epoxy resin and an amine-based latent curing agent, wherein the epoxy resin comprises: (1) a dibasic acid ester-based epoxy resin, (2) a butadiene-acrylonitrile copolymer modified epoxy resin, and (3) an unmodified bisphenol A type epoxy resin, and wherein a thermally cured product formed from the composition has: a loss tangent tan ? at 23° C. of not less than 0.2 as a damping performance, and a Young's modulus of not less than 50 MPa, and a body structure for vehicle, on which the one-component type thermosetting adhesive composition is applied.
    Type: Application
    Filed: August 23, 2018
    Publication date: February 28, 2019
    Inventors: Takatomi NISHIDA, Shohei YANAGISAWA, Katsuya HIMURO, Kenichi YAMAMOTO, Motoyasu ASAKAWA, Tomoya YOSHIDA