Method of marking solid or liquid substances with nucleic...

Details Method of marking solid or liquid substances with nucleic... Method of marking solid or liquid substances with nucleic...

2006-10-03

2006-10-03

Jolley, Kirsten (Department: 1762)

Coating processes

Fraud or tamper detecting

C427S256000

Reexamination Certificate

active

07115301

ABSTRACT:
A method of marking a solid article or substance includes the steps of dissolving a water-insoluble medium in a first solvent to form a first mixture, mixing a nucleic acid solution with an intermediate solution to form a second mixture, mixing the second mixture with the first mixture to form a homogenous third mixture, marking the article or substance with the third mixture containing the nucleic acid; and drying the marked article or substance. Through the addition of an intermediate solution, the miscibility between the nucleic acid solution and the medium is increased and a homogenous solution is formed. For marking solid substances or articles, the water-insoluble medium containing known nucleic acid taggants is spread on the target solid substances or articles. For marking liquid, the target liquid is mixed with the water-insoluble media containing known nucleic acid taggants. As a result, the target liquid is labeled with nucleic acid.

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patent: 5599578 (1997-02-01), Butland
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patent: 6312911 (2001-11-01), Bancroft et al.
patent: 0 477 220 (1992-04-01), None
patent: 0623658 (1994-11-01), None
patent: WO 03/080931 (2003-03-01), None

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