Patents Assigned to Printetch Limited
  • Security printing using a diffraction grating
    Patent number: 8015919
    Abstract: There is provided an apparatus and a method of printing a diffraction grating. In particular, the present invention relates to diffraction gratings applied to a substrate (1), such as a hologram.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: September 13, 2011
    Assignee: Printetch Limited
    Inventors: David Boswell, Mark Dicker, Steven Winton