Patents by Inventor Hidenori Watakabe

Hidenori Watakabe 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).

  • Tire including steel tire cords
    Patent number: 5135039
    Abstract: A tire formed of steel tire cords, in which each steel tire cord is provided with five strands of steel cords extending in the longitudinal direction and being twisted together, the strands being embedded in a belt layer, and only two of the strands extending in a zig-zag manner along the longitudinal direction thereof so as to form sharp angles therealong, the sharp angles of the different strands being in alignment with each other.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: August 4, 1992
    Assignee: Kokoku Steel Wire Ltd.
    Inventors: Takehiko Mizuta, Toshiaki Itoh, Hidenori Watakabe
  • Method of manufacturing steel tire cords
    Patent number: 5111649
    Abstract: A method of manufacturing a tire steel cord formed of more than three strands twisted together, at least one of the strands being marked so as to formed therein with zig-zagging marked parts which form gaps between strands, rubber accordingly immersing the steel cord into its center part through the thus formed gaps so as to fill in a cavity in the center part of the steel cord.
    Type: Grant
    Filed: March 7, 1991
    Date of Patent: May 12, 1992
    Assignee: Kokoku Wire Steel Ltd.
    Inventor: Hidenori Watakabe
  • Tire steel cords and method of manufacturing thereof
    Patent number: 5020312
    Abstract: A tire steel cord formed of more than three strands twisted together, at least one of the strands being marked so as to formed therein with zig-zagging marked parts which form gaps between strands, rubber accordingly immersing the steel cord into its center part through the thus formed gaps so as to fill in a cavity in the center part of the steel cord.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: June 4, 1991
    Assignee: Kokoku Steel Wire Ltd.
    Inventor: Hidenori Watakabe