Patents by Inventor Norimasa Yamashita

Norimasa Yamashita 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: 20240092124
    Abstract: Provided is a technology for inhibiting the occurrence of uneven wear at shoulder-side edges of blocks in a motorcycle tire having a block pattern. A motorcycle tire (100) includes plural blocks (11) and (12) that are arranged on a tread ground-contact surface. In a tire widthwise cross-section of a tread portion (1), when regions obtained by bisecting a tread half-width region measured along the tire surface from a tire equator CL to a tread ground-contact end TE are each defined as a tread center portion Tc and a tread shoulder portion Ts, a middle block (12) among the plural blocks, whose outer wall surface (12A) on the tire width-direction outer side is positioned in the tread shoulder portion Ts, is configured such that an upper end portion is chamfered only for the outer wall surface (12A) and a chamfered part (12B) is thereby formed on the middle block (12).
    Type: Application
    Filed: June 23, 2021
    Publication date: March 21, 2024
    Applicant: BRIDGESTONE CORPORATION
    Inventor: Norimasa YAMASHITA
  • Patent number: D958053
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: July 19, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Norimasa Yamashita
  • Patent number: D958054
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: July 19, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Takamitsu Nakamura, Norimasa Yamashita
  • Patent number: D981940
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: March 28, 2023
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Norimasa Yamashita, Takamitsu Nakamura
  • Patent number: D998545
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: September 12, 2023
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Norimasa Yamashita, Takamitsu Nakamura