Patents by Inventor Egon Van Leeuwen

Egon Van Leeuwen 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).

  • Solar heater and element therefor
    Patent number: 4114598
    Abstract: The present invention provides a solar heating element comprising a tube having two fin means extending therefrom, the fin means lying at an angle to one another.The invention also provides solar heaters containing a plurality of such elements joined by connectors at the free ends of the fins.The elements are conveniently made by extrusion.Manifolds for attachment to a plurality of such elements are also provided and enable the construction of heaters to various sizes.
    Type: Grant
    Filed: April 28, 1976
    Date of Patent: September 19, 1978
    Inventor: Egon Van Leeuwen
  • Solar heat exchange element
    Patent number: D245173
    Type: Grant
    Filed: October 30, 1975
    Date of Patent: July 26, 1977
    Inventor: Egon Van Leeuwen