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US 6,991,914 B2Granted
Silent marker for an oil product and associated detection method
AssigneeSK Corporation
InventorsHwan-Ho Park, Dong-Hyon Sheen, Hyun-Seok Kim, Sung-Ho Park
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Abstract
A silent marker, method of marking a petroleum product with the silent marker, and method of detecting the silent marker. The marker is an ester derivative of fluorescent material, and the silent marker may be detected by measuring the fluorescence generated from the selective hydrolysis of the ester moiety under enzymatic action.
Claims21
A method for detection of a silent marker in a petroleum product, comprising the steps of:
- a) marking the petroleum product with the silent marker, which is an ester derivative of fluorescent material;
- b) adding a detection composition to the marked petroleum product, wherein the detection composition contains an enzyme that specifically decomposes the ester moiety of the silent marker;
- and
- c) detecting the presence of the silent marker by measuring the fluorescence generated from step b).
1 more element
A method for identifying a petroleum product, comprising the steps of:
- a) mixing the petroleum product having been marked with a silent marker, which is an ester derivative of fluorescent material, with a composition containing an enzyme that specifically decomposes the ester moiety of the marker to identify the marked petroleum product;
- and b) measuring the fluorescence generated from step a).
Dependencies are inferred from the claim text.