Patents by Inventor George B. Cusdin

George B. Cusdin 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).

  • Relief printing plate manufacture
    Patent number: 4927723
    Abstract: A relief flexographic printing plate is prepared by image-wise exposure of the "printing face" of a layer of photocurable polymer through a negative 7 and image-wise back exposure of the layer 4 through a support sheet 3 and a positive 6 of the image to be printed, thereby selectively curing the floor regions 9 of the printing plate in register with the uncured areas 8 left in the printing face of said layer.Preferably a further non-selective back exposure operation is carried out for additionally curing the floor regions.
    Type: Grant
    Filed: June 7, 1988
    Date of Patent: May 22, 1990
    Assignee: W. R. Grace Limited
    Inventor: George B. Cusdin