Patents by Inventor Hidefumi Doi

Hidefumi Doi 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).

  • Pneumatic tire and method for manufacturing the same
    Patent number: 10857835
    Abstract: A pneumatic tire and a method for manufacturing the same are provided. In a step of laminating belt reinforcing layers on an outer circumferential side of a belt layer constituting a green tire, wherein the belt reinforcing layers cover each of a tire width direction left edge portion and right edge portion of the belt layer and are separated from each other in the tire width direction, each of the belt reinforcing layers is formed by inclining strip members constituting each of the reinforcing layers in a same direction with respect to a tire circumferential direction, and winding the strip members in a spiral-like manner at least one time around in the tire circumferential direction.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: December 8, 2020
    Inventors: Hidefumi Doi, Masahiro Hirano
  • Pneumatic Tire and Method for Manufacturing the Same
    Publication number: 20160318344
    Abstract: A pneumatic tire and a method for manufacturing the same are provided. In a step of laminating belt reinforcing layers on an outer circumferential side of a belt layer constituting a green tire, wherein the belt reinforcing layers cover each of a tire width direction left edge portion and right edge portion of the belt layer and are separated from each other in the tire width direction, each of the belt reinforcing layers is formed by inclining strip members constituting each of the reinforcing layers in a same direction with respect to a tire circumferential direction, and winding the strip members in a spiral-like manner at least one time around in the tire circumferential direction.
    Type: Application
    Filed: December 15, 2014
    Publication date: November 3, 2016
    Inventors: Hidefumi Doi, Masahiro Hirano