Combination of luminescent substances
US9224082B2 · kind B2 · utility
2Cited by
4References
40Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 10, 2011 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Apr 20, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2019/06225
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a luminescent composition comprising a component which can be excited by infrared (IR) radiation and a component which can be excited by ultraviolet (UV) radiation. The composition has a characteristic emission spectrum and may optionally be used together with a reading system adapted to the emission spectrum in order to mark substances or mixtures of substances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.