Mulltilayered, useful for coloring paint, inks, including security printing inks, plastics, ceramics, glasses, and decorative cosmeticsUS57663345 Jun 199616 Jun 1998Toyo Aluminium K. K.Having flat, smooth surface with oxide layer formed on surface to specified depthUS576633523 Abr 199716 Jun 1998Ciba Specialty Chemicals CorporationColored luster pigmentsUS5789068 *29 Jun 19954 Ago 1998Fry's Metals