Patents by Inventor Shigeaki Takigawa

Shigeaki Takigawa 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).

  • Method of arranging cyclic patterns in tire tread
    Patent number: 6800161
    Abstract: A method of arranging cyclic patterns in a tire tread is disclosed, wherein design cycles in each cyclic pattern are repeated in a pitch sequence; with respect to each of the design cycles, an averaged pitch of the pitch lengths of a predetermined number of subsequent design cycles is obtained; combinations of the sequences of the averaged pitches are defined by changing phase between the sequences; with respect to the averaged pitches of the combined sequences, crossover averages are obtained; from the crossover averages in each combination, a difference between a maximum and a minimum is obtained; from the differences of the combinations, a combination having a smaller difference is found; the cyclic patterns are arranged in accordance with the phase shift of the combination having the smaller difference.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: October 5, 2004
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Shigeaki Takigawa, Hitoshi Yoshimi, Hiroki Yokota
  • Method of arranging cyclic patterns in tire tread
    Publication number: 20030041949
    Abstract: A method of arranging cyclic patterns in a tire tread is disclosed, wherein design cycles in each cyclic pattern are repeated in a pitch sequence; with respect to each of the design cycles, an averaged pitch of the pitch lengths of a predetermined number of subsequent design cycles is obtained; combinations of the sequences of the averaged pitches are defined by changing phase between the sequences; with respect to the averaged pitches of the combined sequences, crossover averages are obtained; from the crossover averages in each combination, a difference between a maximum and a minimum is obtained; from the differences of the combinations, a combination having a smaller difference is found; the cyclic patterns are arranged in accordance with the phase shift of the combination having the smaller difference.
    Type: Application
    Filed: March 28, 2002
    Publication date: March 6, 2003
    Inventors: Shigeaki Takigawa, Hitoshi Yoshimi, Hiroki Yokota
  • Automobile tire
    Patent number: D331379
    Type: Grant
    Filed: January 24, 1991
    Date of Patent: December 1, 1992
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Yukio Nakao, Shigeaki Takigawa