Photolytically and environmentally stable multilayer structure for high efficiency electromagnetic energy conversion and sustained secondary emission
US8178852B2 · kind B2 · utility
216Cited by
10References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2011 |
| Grant date | May 15, 2012 |
| Priority date | — |
| Expiry date | Nov 8, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31504
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multilayer structure for authentication that includes an energy conversion layer, at least one stability enhancement layer and at least one optical variable element is disclosed. Also disclosed are methods of creating and using the inventive multilayer structure for authentication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.