Patents by Inventor John A. Barnak

John A. Barnak 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).

  • Document imprinter
    Patent number: 4092920
    Abstract: A document imprinter, especially for labels, tickets, tags, and the like, having an elastomeric platen with an outermost thin sleeve which is harder than the underlying platen material thereby resulting in sharper printing. The sleeve is preferably of a material which is smooth and glossy and non-adherent to adhesives, thus minimizing undesired transfer to the platen of adhesive from the web to be imprinted.
    Type: Grant
    Filed: November 10, 1976
    Date of Patent: June 6, 1978
    Assignee: Litton Business Systems, Inc.
    Inventor: John A. Barnak