Patents by Inventor Sakae Kawahara

Sakae Kawahara 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).

  • Pavement water conservation method
    Patent number: 4382713
    Abstract: Apparatus is provided to reduce wastage of water draining from pavements.
    Type: Grant
    Filed: July 30, 1980
    Date of Patent: May 10, 1983
    Inventor: Sakae Kawahara