Patents by Inventor Hajime Taniwaki

Hajime Taniwaki 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).

  • Vehicle test course surface
    Patent number: 6626607
    Abstract: A vehicular test course surface is provided which permits tests to be conducted in a snow-covered road condition no matter in which season the tests may be conducted. Snow is made to fall or accumulate like artificial snow onto a road surface.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: September 30, 2003
    Assignee: Nippon Hodo Co., Ltd.
    Inventors: Shozo Hiramatsu, Hajime Taniwaki
  • Tiled road surface
    Patent number: 6528111
    Abstract: Provided is a method for recovering a slip resistance value of a basalt-tiled road surface by treating with an acid solution.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: March 4, 2003
    Assignee: Nippon Hodo Co., Ltd.
    Inventors: Hajime Taniwaki, Osamu Taitoh, Yoshishige Takagi