Patents Represented by Attorney, Agent or Law Firm Lewis, D'Amato, Brisbois & Bisgaard LLP
  • Isotopic taggant method and composition
    Patent number: 5760394
    Abstract: A system for tagging products or substances for retrospective identification using controlled abundance ratios of multiple isotopes in each of one or more elements in the tagged substance. The abundance ratios of the isotopes of the tagging elements are measured by suitable means to determine the identification code of the tagged product of substance.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: June 2, 1998
    Inventor: Richard P. Welle