Articles employing a magnetic security feature
US5697649A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1995 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | May 11, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12465
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Articles for use with security documents are disclosed which include planchettes and security threads that comprise a plastic substrate having at least one security feature employing soft magnetic metal located thereon. Preferred articles comprise at least two security features where a first security feature is made up of an optionally repeating pattern of soft magnetic metal adapted to generate a signal or a series of signals in an interrogation field applied by a detection system for remote detecting and optionally for remote reading or identifying the article. A second security feature is a public security feature that comprises magnetic and/or non-magnetic metal formed indicia. The first and second security features of this invention can be coextensive features.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.