Patents by Inventor John R. Volpe

John R. Volpe 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).

  • Printing method and copy-evident secure document
    Patent number: 5487567
    Abstract: Disclosed is a method of providing a copy-evident feature to documents and the documents produced thereby. The process allows the printing of a novel security design which is difficult to see with the naked eye when casually inspecting the document, but which will be immediately apparent in a copy if the document is photocopied or transmitted via facsimile.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: January 30, 1996
    Assignee: Francois-Charles Oberthur Group
    Inventor: John R. Volpe