Patents by Inventor John E. Filippi

John E. Filippi 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).

  • Thermal barrier for an exhaust system
    Patent number: 5589144
    Abstract: The present invention relates to a thermal barrier coating applied to the inside surface of a catalytic converter and intake pipe between the manifold of an internal combustion engine and the catalytic converter. The catalytic converter and intake pipes are generally formed in two halves to facilitate an effective means by which the thermal barrier coating can be sprayed onto the inside surface by an arc plasma source prior to combining the individual halves of the catalytic converter or intake pipe.
    Type: Grant
    Filed: May 1, 1990
    Date of Patent: December 31, 1996
    Inventors: John E. Filippi, John A. Golen