Infrared fluorescing optical signature agent for real time change detection
US8253115B1 · kind B1 · utility
7Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2006 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Feb 18, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/6439
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting changes in a scene comprising placing a fluorescent and/or phosphorescent compound in the scene and monitoring for elimination or change in position of the phosphorescent compound. Also a liquid fluorescent and/or phosphorescent material comprising one or more compounds that are fluorescent and/or phosphorescent in infrared frequencies and substantially not fluorescent and/or phosphorescent in visible light frequencies and a carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.