Tagging hydrocarbons for subsequent identification
US5928954A · kind A · utility
21Cited by
27References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1998 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Oct 7, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/13
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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 near infrared spectral region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.