Patents by Inventor Takayuki Niikura

Takayuki Niikura 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: 6029377
    Abstract: An athletic shoe has a sole composed of an inner layer and an outer layer that comes into contact with the ground surface. In the athletic shoe, a plurality of downward projecting projections are formed on the lower surface of the outer layer as parts of the outer layer, and a ring-shaped flange portion is formed as a part of the outer layer to surround the corresponding projection. The ring-shaped flange portion slants upward from its outer edge toward the inner edge. When a downward pressure greater than a predetermined value acts onto a portion where the projection and the corresponding flange portion are formed, the flange deforms in order to move the projection downward. In another athletic shoe, a plurality of projections is formed on the outer surface of a sole, and a depression is formed in the outer surface of the sole in the vicinity of each of the projections.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: February 29, 2000
    Assignee: Bridgestone Sports, Co., Ltd.
    Inventors: Takayuki Niikura, Tadatoshi Yamada
  • Patent number: 5651994
    Abstract: An elastic paving material includes a mixture of 90-50% by weight of fibrous rubber chips each having a length of 3-30 mm and a diameter of 0.3-3 mm, and 10-50% by weight of crushed pieces of golf balls having a particle size of 3-50 mesh. A curable liquid binder is added so as to bond the fibrous rubber chips and the crushed pieces of golf balls. Another elastic paving material includes only pieces of golf balls having a particle size of 3-50 mesh, and a curable liquid binder is added thereto so as to bond the pieces of golf balls. The crushed pieces of golf balls have a color different from that of the fibrous rubber chips, consist of particles having various colors, or are colored in advance.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: July 29, 1997
    Assignee: Bridgestone Sports Co., Ltd.
    Inventors: Yoshimichi Hara, Masayuki Otake, Takayuki Niikura
  • Patent number: D415341
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: October 19, 1999
    Assignee: Bridgestone Sports Co., Ltd.
    Inventor: Takayuki Niikura