Patents by Inventor Robert S. Piller

Robert S. Piller 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).

  • Storage stable photosensitive diazo lithographic printing plates
    Patent number: 4299907
    Abstract: Storage stable lithographic printing plates employing novel light sensitive, high molecular weight diazo polymers are herein provided. The novel diazo polymers of the instant invention have the generic formula: ##STR1## Where R is methyl or hydrogenX is methoxy, ethoxy or hydrogenY is oxygen or sulfurZ is an anion of a sulfonic, carboxylic or phosphonic acidn is an integer from 8 to 970.
    Type: Grant
    Filed: November 15, 1979
    Date of Patent: November 10, 1981
    Assignee: Polychrome Corporation
    Inventors: Stephen E. Burkle, Albert S. Deutsch, Robert S. Piller