Security document
US7449212B2 · kind B2 · utility
4Cited by
1References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 16, 2003 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Dec 7, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1372
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A security document with a security element, wherein the security element includes at least partly a material that is optically changeable by an electric or magnetic field. In addition, a corresponding method for producing such a security document and a test method for testing such a security document are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.