Transfer film
US5413839A · kind A · utility
26Cited by
13References
60Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1993 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Jan 12, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24876
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A transfer film for use, for example, with security documents includes a pattern defining layer having concavities defining an inverted relief pattern, and a retaining layer overlying and releasably filling the concavities of the pattern defining layer. The pattern defining layer is removable from the retaining layer to transfer the relief pattern from the pattern defining layer to the retaining layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.