Method of making deactivatable tags
US4802944A · kind A · utility
19Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1988 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Mar 28, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1084
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
This invention relates to a deactivatable tag useable with an electronic article surveillance system and comprised of planar conductive material cut into a pair of inverse, first and second spiral conductors wrapped about each other and positioned for capacitive and inductive coupling. The invention also relates to method of making tags wherein conductors are cut from a planar web of conductive material in a continuous process in a manner that the cutting results in the formation of two spiral conductors without accompanying waste of conductive material, and thereafter positioning the conductors to provide resonant circuits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.