Silent fluorescent petroleum markers
US5980593A · kind A · utility
19Cited by
9References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1998 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Feb 13, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/232
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Liquid petroleum products and industrial liquids are marked with highly soluble silent fluorescent markers having the formula: ##STR1## where R is selected from a linear or branched C.sub.1 -C.sub.18 alkylcarboxy radical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.