Card-shaped data carrier and method for producing the same
US6572021B1 · kind B1 · utility
5Cited by
34References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2001 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Mar 1, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D25/309
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The invention relates to a card-shaped data carrier having a printed layer (6) on a carrier layer (2) and a transparent film (1) with a thermoreversible color layer (4) on said printed layer (6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.