Patents by Inventor Jack R. Caddell

Jack R. Caddell 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).

  • Laser production of lithographic printing plates
    Patent number: 4054094
    Abstract: The use of a laser beam to etch the surface of a printing plate made from a polymer composition on a metal or plastic base and a thin top coating of a hard hydrophilic material produces a lithographic printing plate capable of accepting ink in the etched region and accepting water in the unetched regions.
    Type: Grant
    Filed: December 19, 1973
    Date of Patent: October 18, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Jack R. Caddell, Harvey H. Hoehn