Patents by Inventor Gunther B. Frietzsche

Gunther B. Frietzsche 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).

  • Catalytic converter having pressurized-gas support means
    Patent number: 3972687
    Abstract: Exhaust system especially for motor vehicles of the type having a monolith of ceramic material serving as a catalyst support disposed in a metallic housing, said monolith being supported only radially in a double walled mantle having an inner wall of thin foil-like material closely encompassing the monolith and an outer wall defining the sole support connected at the ends in seal-like fashion and the inner space of which is filled with gas under pressure.
    Type: Grant
    Filed: March 21, 1974
    Date of Patent: August 3, 1976
    Assignee: Paul Gillet GmbH
    Inventor: Gunther B. Frietzsche