Fluorocarbon tracers and tracing method
US4520109A · kind A · utility
30Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1983 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Mar 14, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/196666
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A material is traced to its origin or the flow pattern of a fluid medium is defined by incorporating into the material or fluid medium a perfluorinated C.sub.9 -C.sub.18 polycyclic hydrocarbon containing at least two bridgehead carbon atoms linked through a bridge containing at least one carbon atom, collecting a sample of the material or fluid medium after distribution or flow, and analyzing the sample for the presence of the perfluoro compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.