The method of present invention and the device used therein is directed for characterizing unknown metallic flakes present in an existing coating on a substrate such that a matching metallic paint composition can be formulated and applied over the substrate to produce a metallic coating having characteristics,...http://www.google.com/patents/US6952265?utm_source=gb-gplus-sharePatent US6952265 - Method of characterization of surface coating containing metallic flakes and device used therein
