Chemical residue indicator

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20080044310A1
SERIAL NO

11506918

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An indicator that is an adhesive label-like testing indicator that is used to detect the presence of trace chemical residues, e.g., explosive compound residues or other hazardous chemicals. The indicator comprises a substrate, preferably transparent, having an upper surface and a lower surface and a first portion and a second portion joined at a fold line, the first portion being smaller in area than the second portion. A pressure sensitive adhesive coats the upper surface of at least the second portion of the substrate. A first reactant is adhered to the upper surface of the first portion of the substrate. When the upper surface of the second portion, is contacted with a surface containing the trace chemical residues, e.g., the handle of a briefcase, the chemical residue adheres to the adhesive. When the first portion is subsequently folded along the fold line so that the upper surfaces of the substrate contact each other, a portion of the adhesive on the second portion remains exposed. This exposed portion may be used to attach the indicator to an article, e.g., a passport or the article tested. Subsequently, over a period of time, the first reactant and any chemical residue present react with each other to provide a color indicia indicating the presence of the chemical residue.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
TECCO INC19 WEST GATE ROAD SUFFERN NY 10901

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Haas, David J Suffern, NY 124 3347

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