Patents by Inventor John A. Maccini

John A. Maccini 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).

  • Projection imaged relief printing plates
    Patent number: 4702994
    Abstract: A relief printing plate is made by exposing a photopolymer layer on a support sheet to image forming projected light radiation and then removing the unexposed portions of photopolymer. The image forming projected light radiation is provided by passing ultraviolet light radiation, which has been passed first to homogenizing means and then condensing means, through image bearing means out of contact with said photopolymer layer to a projection enlargement means which projects the resultant image upon the photopolymer layer at a predetermined ratio of enlargement greater than 1:1.
    Type: Grant
    Filed: June 9, 1986
    Date of Patent: October 27, 1987
    Assignee: W. R. Grace & Co.
    Inventors: Francis J. Rendulic, Randolph H. Robinson, John A. Maccini