Patents by Inventor Chiyo MIYAMOTO

Chiyo MIYAMOTO 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).

  • Patent number: 10793703
    Abstract: The present invention provides a tire which has at least one member selected from the group consisting of a side reinforcing rubber layer and a bead filler made of a vulcanized rubber composition comprising a natural rubber as a rubber component and having a difference between a dynamic tensile storage modulus E? at 180° C. (A) and a dynamic tensile storage modulus E? at 25° C. (B) {E?(A)?E?(B)} of 2.0 MPa or more, the dynamic tensile storage moduli being measured under conditions of an initial tensile strain of 5%, a dynamic tensile strain of 1%, and a frequency of 52 Hz, and provides the tire excellent in achieving both the riding comfort in normal running and the durability in Run-flat running.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: October 6, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Motoki Amiya, Chiyo Miyamoto
  • Publication number: 20200299427
    Abstract: The present invention relates to a rubber composition which makes it possible to achieve both of a riding comfort during normal running and durability during run flat running in a run flat tire. The rubber composition is a rubber composition containing a rubber component, a filler, a vulcanizing agent, and a vulcanization accelerator, wherein the rubber component contains 50% by mass or more of a modified conjugated diene-based rubber; the filler contains a carbon black; and the vulcanization accelerator contains a thiuram-based vulcanization accelerator, the carbon black being contained in an amount of 40 to 60 parts by mass, and the thiuram-based vulcanization accelerator being contained in an amount of 2.6 to 5.5 parts by mass based on 100 parts by mass of the rubber component.
    Type: Application
    Filed: June 5, 2020
    Publication date: September 24, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Motoki AMIYA, Chiyo MIYAMOTO
  • Publication number: 20190177515
    Abstract: The present invention provides a tire which has at least one member selected from the group consisting of a side reinforcing rubber layer and a bead filler made of a vulcanized rubber composition comprising a natural rubber as a rubber component and having a difference between a dynamic tensile storage modulus E? at 180° C. (A) and a dynamic tensile storage modulus E? at 25° C. (B) {E?(A)?E?(B)} of 2.0 MPa or more, the dynamic tensile storage moduli being measured under conditions of an initial tensile strain of 5%, a dynamic tensile strain of 1%, and a frequency of 52 Hz, and provides the tire excellent in achieving both the riding comfort in normal running and the durability in Run-flat running.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 13, 2019
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Motoki AMIYA, Chiyo MIYAMOTO