Patents by Inventor Robert Karel Franken

Robert Karel Franken 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).

  • Molten metal filter cartridge
    Patent number: 5741422
    Abstract: A molten metal filter medium comprised of at least two opposed wedge-shaped plates having at least one hollow generally oblong member comprised of porous ceramic material attached at a first end to one of the plates and at a second end to the second plate, at least one of the plates including a passage to an outlet communicating with the hollow member, wherein molten metal can enter the filter through the hollow member and exit the filter through the passage in the end plate.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: April 21, 1998
    Assignee: Metaullics Systems Co., L.P.
    Inventors: David J. Eichenmiller, Richard S. Henderson, Robert Karel Franken