Patents by Inventor Frank G. Pfleger

Frank G. Pfleger 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).

  • Gravure printing cylinders
    Patent number: 4007680
    Abstract: The printing surface of the cylinder is constituted of an Epon resin on which has been mechanically provided the desired images to be printed. The printing cylinder is preferably a hollow cylinder having a cylindrical body formed of a layer of a wound fabric impregnated with a phenolic resin. The hollow cylinder and the shaft and end flanges of the cylinder are constructed to provide a sturdy printing cylinder, into the hollow interior of the body of which, the inks used in printing cannot seep.
    Type: Grant
    Filed: July 3, 1974
    Date of Patent: February 15, 1977
    Inventors: Frank G. Pfleger, Howard Howland