Anisotropic polymer film
US6953611B2 · kind B2 · utility
4Cited by
14References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2002 |
| Grant date | Oct 11, 2005 |
| Priority date | — |
| Expiry date | Sep 19, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/03
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An anisotropic polymer film comprising a polymeriZed chiral liquid crystal material with helically twisted structure and having areas with different helical twist sense is useful for decorative or security applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.