Patents by Inventor Yoshishige Takagi

Yoshishige Takagi 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).

  • 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