Patents by Inventor Frank Servas

Frank Servas 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).

  • Heat exchanger for extracorporeal circuit
    Patent number: 4559999
    Abstract: The oxygenater heat exchanger disclosed utilizes a heat transfer tube having several tube legs arranged in closely spaced, parallel relation. A resilient central core fits resiliently within the tube legs and cooperates with spiral ribs on the tube and with the housing to form blood flow spiral passages down around the exterior of each of the tube legs. The blood inlet is positioned to enhance efficient heat exchange.
    Type: Grant
    Filed: April 8, 1983
    Date of Patent: December 24, 1985
    Assignee: Shiley, Inc.
    Inventors: Frank Servas, John E. Lewin, Tudor Pavlov, Lambert J. Diettrich, Jr.