Tagging hydrocarbons for subsequent identification
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United States of America Patent
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-
Dec 1, 1998
Issued Date -
N/A
app pub date -
Dec 18, 1997
filing date -
Nov 4, 1994
priority date (Note) -
Expired
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Abstract
A method for tagging hydrocarbons and for detecting the presence of tagged hydrocarbons in a hydrocarbon mixture. The method can be utilized to tag gasoline, diesel fuel, heating oil, lubricating oil or crude petroleum. The hydrocarbon to be tagged is blended with a relatively small amount of a fluorescent dye. The presence of the tagged hydrocarbon is subsequently determined by exciting the dye to fluoresce at wavelengths in the higher portion of the visible spectral region or the lower portion of the rear infrared spectral region.
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