. . "icles to hinder theft and/or unauthorized saleUS57630869 Oct 19969 Jun 1998Basf AktiengesellschaftMulltilayered, useful for coloring paint, inks, including security printing inks, plastics, ceramics, glasses, and decorative cosmeticsUS58117755 Dec 199522 Sep 1998Commonwealth Scientific And Industrial Research OrganisationOptical data element including a diffraction zone with a multiplicity of diff" . .