Patents by Inventor John Tsopelas

John Tsopelas 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).

  • Automobile radiator filter
    Patent number: 4343353
    Abstract: The invention relates to method and apparatus for filtering engine coolant flowing in the cooling system of an automotive internal combustion engine. The method consists of constraining engine coolant which normally discharges from an overflow port in the cooling system radiator to pass through a filter into a reservoir, and of applying the suction normally produced at the overflow port as the cooling system cools to draw the filtered engine coolant back into the cooling system.
    Type: Grant
    Filed: November 26, 1980
    Date of Patent: August 10, 1982
    Inventor: John Tsopelas