Anti-theft tag
US6018298A · kind A · utility
40Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1998 |
| Grant date | Jan 25, 2000 |
| Priority date | — |
| Expiry date | Dec 10, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49155
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An anti-theft tag for attachment to a theft-monitored article including a resonance circuit which resonates radio waves of a predetermined frequency transmitted from an antenna, and a shielding coil having at least two terminals. The shielding coil is disposed between the resonance circuit and the article when the anti-theft tag is attached to the article, and the at least two terminals are short-circuited.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.