Multilayer flake with high level of coding
US8864037B2 · kind B2 · utility
5Cited by
22References
42Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 13, 2013 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Mar 13, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31504
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Coding flake or film including at least two chiral liquid crystal polymer (CLCP) layers with a first CLCP layer that has a first detectable parameter and a second CLCP layer including a second detectable parameter; at least one additional layer including a third detectable parameter, the at least one additional layer comprising a material that is not a chiral liquid crystal polymer; and wherein at least the third detectable parameter is different from each of the first detectable parameter and the second detectable parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.