Disc device having a magnetic layer overweighing the information signal pattern for electronic article surveillance
US5940362A · kind A · utility
9Cited by
15References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1996 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Aug 19, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/2442
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A disc device includes a disc substrate having an information signal pattern formed on a surface thereof and a magnetic material layer formed on the information signal pattern which permits for detection of the device by an electronic article surveillance detection system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.