Security device with foil camouflaged magnetic regions and methods of making same
US6549131B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 6, 2000 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Aug 2, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method of covering, embedding or burying magnetically encodable regions, invisible to the naked eye at least on one side, in a magnetic/metallic security device begins by providing a security device carrier substrate having an imaged metallic region. A foil film is provided on a release coated carrier film. One or more magnetic regions are provided on either the foil film layer or the carrier substrate. Patterned, flat, or roller heated dies are used to contact and bond the foil film to the security device carrier substrate in at least those regions of the magnetic regions thereby producing a security device having covered, embedded or camouflaged magnetically encodable regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.