Patents by Inventor Tsutomu Takashi

Tsutomu Takashi 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 reducing frost heaving of ground
    Patent number: 4154553
    Abstract: A method of reducing frost heave by increasing the viscosity of water in the ground. The viscosity of the water may be increased by the injection of carboxymethyl cellulose in an amount sufficient to increase the viscosity of the water by a factor of about 30.
    Type: Grant
    Filed: August 2, 1977
    Date of Patent: May 15, 1979
    Assignee: Seiken Reiki Kabushiki Kaisha
    Inventor: Tsutomu Takashi