Security markers for identifying a source of a substance

Gary A. Ross (Inventor), Graham I. Johnson (Inventor), Barrie Clark (Inventor), Simon J. Forrest (Inventor)

Research output: Patent


A method of identifying a source of a Substance incorporating one or more luminescent markers comprises illuminating the Substance to stimulate emission from at least one of the luminescent markers. A luminescent signature is generated from the detected luminescent emission. The source of the substance is identified based on a match between the generated luminescent signature and a pre-defined luminescent signature.
Original languageEnglish
Patent numberUS 7,800,088 B2
Filing date2/11/05
Publication statusPublished - 21 Sep 2010
Externally publishedYes

Cite this

Ross, G. A., Johnson, G. I., Clark, B., & Forrest, S. J. (2010). Security markers for identifying a source of a substance. (Patent No. US 7,800,088 B2 ). USPTO (United States Patent and Trademark Office).