78865136
Apr 19, 2006
Apr 1, 2008
Inorganic up-converting phosphor taggants for authentication, anti-counterfeiting, product diversion tracking, and product identification
ChemicalsElectronic and electrically operated devices for reading and recording the presence of inorganic up-converting phosphor taggants, namely, electronic detectors and laser pens for use in product authentication, anti-counterfeiting, product diversion tracking, and product identification
Electrical and Scientific Apparatus