Patents by Inventor Harald Buhr

Harald Buhr 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).

  • Publication number: 20060266795
    Abstract: A method for printing a plastic surface by means of hot-stamping with a metallic hot-stamping tool that can be heated and is coated with plastic is described. The plastic-coated outer surface of the hot-stamping tool forms the stamping surface. The stamping surface transfers a pigment layer applied onto the carrier foil to the work piece when the carrier foil is pressed against the surface of a work piece to be printed. The work piece surface to be printed is preheated before the printing process with the aid of a heating device, wherein the temperature of the stamping surface of the hot-stamping tool lies between 140° C. and 240° C.,. This extends the service life of the hot-stamping tools and the set-up times of the hot-stamping device are simultaneously reduced.
    Type: Application
    Filed: March 24, 2004
    Publication date: November 30, 2006
    Inventors: Roland Heckenthaler, Walter Holzapfel, Harald Buhr