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US 2004/0110997 A1Published application
Method for marking liquid petroleum hydrocarbons
OwnerKim Sang Hoinventor
Life of this patent
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Abstract
A method for marking a liquid petroleum hydrocarbon; said method comprising adding to said liquid petroleum hydrocarbon at least one dye having an unsaturated cyclic nucleus comprising at least nine ring atoms, and having at least one (CN)2C═ substituent and at least one Ar—N═ substituent; wherein Ar is a substituted aryl group.
Claims10
A method for marking a liquid petroleum hydrocarbon;
- said method comprising adding to said liquid petroleum hydrocarbon at least one dye having an unsaturated cyclic nucleus comprising at least nine ring atoms, and having at least one (CN)2C═ substituent and at least one Ar—N═ substituent;
- wherein Ar is a substituted aryl group.
Dependencies are inferred from the claim text.