Method of identifying a surface
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United States of America Patent
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Sep 22, 1998
Issued Date -
N/A
app pub date -
Dec 10, 1996
filing date -
Oct 2, 1991
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Abstract
A method for identifying a surface in which a plurality of trace material is used to establish a database in which a unique combination of trace materials is assigned to a unique source. A composition is formulated containing the unique combination together with an indicator material and a solvent system, the solvent system including a solvent which is volatile under conditions of application. This composition is applied to a surface and the solvent permitted to evaporate, after which the composition is detected on the basis of the indicator material and each of the plurality of trace materials is identified. The unique source can then be determined from the database.
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