Patents by Inventor Craig D. Lien

Craig D. Lien 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).

  • Device for forming flexographic printing plate
    Patent number: 5279697
    Abstract: A device for forming a flexographic printing plate is disclosed. A preformed, imagewise irradiated sheet of film is heat treated by the device of the present invention to remove unwanted portions of a top layer, leaving radiation hardened relief images on the plate. The device has a heating means for supplying heat to said film, a first delivery means for delivering a sheet of absorbent material to a surface of the film, a second delivery means for supplying film to the heating means, pressure means for causing liquified material to be absorbed onto an absorbent material, and a separation means for separating the absorbent material from the film.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: January 18, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John A. Peterson, Kurt F. F. Feil, Craig D. Lien, John A. Martens, Gary A. Staus, Gary D. VanDerWerff