Marking comprising a chiral liquid crystal polymer and a luminescent substance
US9987866B2 · kind B2 · utility
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5References
24Claims
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Key dates
| Filing date | Mar 27, 2015 |
| Grant date | Jun 5, 2018 |
| Priority date | — |
| Expiry date | Mar 27, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M2205/38
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Described is a marking for a substrate. The marking comprises at least one luminescent substance (a) and at least one chiral liquid crystal polymer (CLCP) material (b) having a reflection wavelength range that overlaps at least a part of the luminescence wavelength range of (a), provided that at least a part of (b) is not located underneath (a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.