Method of determining authenticity of a packaged product
First Claim
1. A method of verifying the authenticity of a packaged product, comprising:
- a) providing a package which comprises 1) a product, 2) a packaging material covering at least one surface of said product, and 3) more than 10 up to about 50,000 parts per million independently of at least two fluorescent materials, said fluorescent materials being capable of excitation by radiation in the wavelength range of about 250 to about 400 nm and emission of radiation in the wavelength range of about 300 to about 475 nm, wherein one of the following is true;
(a) each of said fluorescent materials is disposed in or on said packaging material, (b) each of said fluorescent materials is disposed in or on at least one surface of said product, or (c) at least one of said fluorescent materials is disposed in or on said packaging material and at least one of said fluorescent materials is disposed in or on at least one surface of said product;
b) exposing said package to a source of excitation radiation comprising wavelengths in the range of about 250 to about 400 nm so that said fluorescent materials are excited by said excitation radiation;
c) spectroscopically detecting the radiation emitted by said fluorescent materials in the wavelength range of about 300 to about 475 nm;
d) compiling an intensity versus wavelength plot of said emitted ultraviolet radiation over at least a portion of the range of wavelengths detected; and
e) comparing said compiled intensity versus wavelength plot against a previously measured, stored intensity versus wavelength plot of an authenticated standard so as to determine whether said packaged product is authentic.
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Accused Products
Abstract
A method of verifying the authenticity of a packaged product involves providing a package that includes a product, a packaging material covering at least one surface of the product, and at least two fluorescent materials, which (a) each can be disposed in or on the packaging material, (b) each can be disposed in or on at least one surface of the product, or (c) can be separated so that at least one of them is disposed in or on the packaging material and at least one of them is disposed in or on at least one surface of the product. The package is exposed to excitation radiation including one or more wavelengths in the range of from about 250 to about 400 nm, the luminescent radiation emitted by said fluorescent materials is spectroscopically detected in the wavelength range of about 300 to about 475 nm, and an intensity versus wavelength plot of the emitted radiation over at least a portion of the range of wavelengths detected is compiled. This compiled plot is compared against a previously measured, stored emitted radiation intensity versus wavelength plot from an authenticated standard so as to determine whether the packaged product is authentic.
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Citations
20 Claims
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1. A method of verifying the authenticity of a packaged product, comprising:
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a) providing a package which comprises 1) a product, 2) a packaging material covering at least one surface of said product, and 3) more than 10 up to about 50,000 parts per million independently of at least two fluorescent materials, said fluorescent materials being capable of excitation by radiation in the wavelength range of about 250 to about 400 nm and emission of radiation in the wavelength range of about 300 to about 475 nm, wherein one of the following is true;
(a) each of said fluorescent materials is disposed in or on said packaging material, (b) each of said fluorescent materials is disposed in or on at least one surface of said product, or (c) at least one of said fluorescent materials is disposed in or on said packaging material and at least one of said fluorescent materials is disposed in or on at least one surface of said product;
b) exposing said package to a source of excitation radiation comprising wavelengths in the range of about 250 to about 400 nm so that said fluorescent materials are excited by said excitation radiation;
c) spectroscopically detecting the radiation emitted by said fluorescent materials in the wavelength range of about 300 to about 475 nm;
d) compiling an intensity versus wavelength plot of said emitted ultraviolet radiation over at least a portion of the range of wavelengths detected; and
e) comparing said compiled intensity versus wavelength plot against a previously measured, stored intensity versus wavelength plot of an authenticated standard so as to determine whether said packaged product is authentic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification