Patents by Inventor Yuichi Ishigaki

Yuichi Ishigaki 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: 10358002
    Abstract: A pneumatic tire has a side protector 9 comprising first protect ribs 11 and second protect ribs 12 arranged alternately in the circumferential direction. The first protect ribs 11 each have a main part 13 extending radially inwardly in the form of an S shape. The second protect ribs 12 each have a main part 14 extending radially inwardly in the form of an L shape.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: July 23, 2019
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yuichi Ishigaki
  • Publication number: 20190184754
    Abstract: A tire comprises a tread portion provided with at least one longitudinal groove extending in a tire circumferential direction. The longitudinal groove has a groove bottom surface and a pair of groove wall surfaces extending outwardly in a tire radial direction from the groove bottom surface. The groove bottom surface is provided with a groove bottom protruding portion protruding outwardly in the tire radial direction. At least one of the pair of the groove wall surfaces is provided with a groove wall protruding portion protruding toward a side of a groove center of the longitudinal groove.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 20, 2019
    Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Yuichi ISHIGAKI, Koichi NAKAJIMA
  • Publication number: 20180236818
    Abstract: A tire includes a tread portion provided with a plurality of blocks sectioned by grooves. The plurality of blocks includes at least one reinforced block. The at least one reinforcing block includes a main body with a ground contact surface and at least one base reinforcing portion. The at least one reinforcing portion protrudes from a radially inner base portion of the main body locally toward one of the grooves without completely closing the one of the grooves, and has an amount of protruding from the main body increasing gradually inwardly in a tire radial direction.
    Type: Application
    Filed: January 29, 2018
    Publication date: August 23, 2018
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventor: Yuichi ISHIGAKI
  • Publication number: 20170197474
    Abstract: A pneumatic tire has a side protector 9 comprising first protect ribs 11 and second protect ribs 12 arranged alternately in the circumferential direction. The first protect ribs 11 each have a main part 13 extending radially inwardly in the form of an s shape. The second protect ribs 12 each have a main part 14 extending radially inwardly in the form of an L shape.
    Type: Application
    Filed: December 23, 2016
    Publication date: July 13, 2017
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventor: Yuichi ISHIGAKI
  • Patent number: D791690
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: July 11, 2017
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventor: Yuichi Ishigaki
  • Patent number: D826144
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: August 21, 2018
    Inventor: Yuichi Ishigaki