Article with optically modified cholesteric liquid crystal layer
US7022442B2 · kind B2 · utility
1Cited by
2References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2004 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Mar 11, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7224
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An article has transferred onto its surface a region-wise optically modified cholesteric liquid crystalline layer. The layer includes at least one single-film layer including a number of regions having cholesterically ordered material which differ from one another in pitch. The layer can include a holographic image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.