Patents by Inventor Donald R. Calman

Donald R. Calman 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).

  • Simulated engraved print media
    Patent number: 4671538
    Abstract: A paper web is continuously printed with simulated engraving by an embossing die formed with projections for printing a dot matrix or a simple bar projection. In a printing operation, the embossing die acts on the backside of a preprinted web of paper with the embossed dot or bar pattern being in registry with the printed matter. Words are raised from the surface of the web by action of the die without limiting the raised portions precisely to contours of individual characters.
    Type: Grant
    Filed: February 5, 1986
    Date of Patent: June 9, 1987
    Inventor: Donald R. Calman
  • Method of simulated engraved printing
    Patent number: 4586431
    Abstract: A paper web is continuously printed with simulated engraving by an embossing die formed with projections for printing a dot matrix or a simple bar projection. In a printing operation, the embossing die acts on the backside of a preprinted web of paper with the embossed dot or bar pattern being in registry with the printed matter. Words are raised from the surface of the web by action of the die without limiting the raised portions precisely to contours of individual characters.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: May 6, 1986
    Inventor: Donald R. Calman