Patents by Inventor Koji Sagami

Koji Sagami 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 for producing a string-shaped bacteria bed for sewage or wastewater treatment
    Patent number: 4717519
    Abstract: A method for producing a string-shaped bacteria bed having many loops of fiber on the whole surface thereof, which is used for sewage or wastewater treatment, characterized by preparing a narrow strip of cloth made from a thermoplastic material, having many loops of fiber on the obverse thereof, and heating the reverse thereof having no loops of fiber by contacting it with a heating rod while tensing and drawing it diagonally, thereby the strip of cloth is diagonally curled and stranded by heat to form a string having many loops of fiber on the whole surface thereof. In such a method, the string, having high holding capacity of bacteria colony, is obtained by simplified installation.
    Type: Grant
    Filed: March 11, 1987
    Date of Patent: January 5, 1988
    Inventor: Koji Sagami