Patents Assigned to Zone Properties Pty Ltd
  • Ink composition
    Patent number: 5783108
    Abstract: An ink composition comprising an ultraviolet radiation curable carrier incorporating a coloured base pigment which emits visible radiation of a first wavelength, and a quantity of luminescent pigment which emits visible radiation by phosphorescent decay or under illumination by long-wave ultraviolet radiation at a second wavelength wherein the concentration of said luminescent pigment is higher than that required just to ensure the visible escape of luminescent radiation from said composition.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: July 21, 1998
    Assignee: Zone Properties Pty Ltd
    Inventor: Simon Donald MacKay