Hall David R.;Butala Steven J.M.;Allen Dan;Nguyen Andrew;Rosenbrock Conrad;Swenson Ben;Hendricks Daniel;Fox Joe
发明人:
Hall David R.,Butala Steven J.M.,Allen Dan,Nguyen Andrew,Rosenbrock Conrad,Swenson Ben,Hendricks Daniel,Fox Joe
申请号：
US201715597633
公开号：
US2018334669(A1)
申请日:
2017.05.17
申请国别(地区):
美国
年份:
2018
代理人:
摘要：
We disclose a method of tagging a variety of pharmaceutical or nutritional products in which well-studied chemicals may be added to the products in unique ratios. The identities of the chemicals and their relative ratios comprise unique taggants. The taggants may identify which of multiple distinct categories the product falls within. The method includes the step of systematically varying the relative concentrations of the chemicals resulting in multiple ratios of the chemicals. The plurality of ratios of a defined set of chemicals may be collected to form a library of taggants associated with specified items or categories. As the number of chemicals added per product increases, the library supports more categories and the system is less likely to produce a false positive. The method may result in a series of taggants for each item which is single fault tolerant or double fault tolerant.
