Method and apparatus for monitoring liquid for the presence of an additive
First Claim
1. A method for identifying a liquid comprising the steps of:
- a) adding to the liquid a luminescent compound that absorbs electromagnetic radiation of a first wavelength and emits fluorescent light of a second wavelength which is shorter than the first wavelength;
b) exposing the compound to electromagnetic radiation of the first wavelength; and
, c) detecting electromagnetic radiation of the second wavelength, thereby identifying the liquid.
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Accused Products
Abstract
The present invention relates to an apparatus and methods for the identification or authentication of liquid products by the addition of an anti-Stokes marker. The invention features an apparatus and method for the identification of a liquid, dynamic or static, that includes adding an anti-Stokes luminescent marker compound to the liquid followed by exposing the compound to a light source of a known wavelength or known wavelengths and then detecting one or more shorter wavelength emissions from the marker, where the identity of the liquid is confirmed by the emission wavelength or wavelengths that are detected and quantified. The irradiating source of light includes, but is not limited to, a laser and other conventional light sources.
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Citations
120 Claims
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1. A method for identifying a liquid comprising the steps of:
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a) adding to the liquid a luminescent compound that absorbs electromagnetic radiation of a first wavelength and emits fluorescent light of a second wavelength which is shorter than the first wavelength;
b) exposing the compound to electromagnetic radiation of the first wavelength; and
,c) detecting electromagnetic radiation of the second wavelength, thereby identifying the liquid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A method for the identification of a liquid comprising the steps of:
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a) adding to the liquid a luminescent compound that absorbs electromagnetic radiation of a first wavelength and a second wavelength, the second wavelength being longer than the first wavelength, and emits fluorescent light of a third wavelength which is shorter than the second wavelength;
b) exposing the compound to electromagnetic radiation of the first wavelength and the second wavelength; and
c) detecting electromagnetic radiation of the third wavelength, thereby identifying the liquid. - View Dependent Claims (53, 54)
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55. An apparatus for the detection of up-converting markers in a dynamic or static liquid sample, the apparatus comprising:
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a means for producing an excitation wavelength;
a first means for focusing the excitation wavelength;
a means for filtering the focused excitation wavelength;
a second means for focusing the excitation wavelength before the wavelength encounters the sample;
a light detecting means optically disposed along a light path for detection of emitted light from the up-converting marker within the sample; and
,an amplifying means, wherein the up-converting marker emitted light is amplified, thereby producing a quantifiable output. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86)
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87. A hand-held apparatus for the detection of up-converting markers in a dynamic or static liquid sample, the apparatus comprising:
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a means for producing an excitation wavelength;
a first means for focusing the excitation wavelength;
a means for filtering the focused excitation wavelength;
an optical fiber functionally disposed in communication with the means for producing an excitation wavelength;
a second means for focusing the excitation wavelength before the wavelength encounters the sample;
a light detecting means optically disposed along a light path for detection of emitted light from the up-converting marker within the sample; and
,an amplifying means, wherein the up-converting marker emitted light is amplified, thereby producing a quantifiable output. - View Dependent Claims (88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120)
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Specification