Electronic security tag useful in electronic article indentification and surveillance system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 24, 1998
Grant Date -
N/A
app pub date -
Jun 27, 1997
filing date -
Jun 27, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A resonant tag circuit useful as an electronic security device includes a layered planar structure having a dielectric substrate, a resonant circuit carried on both sides of the dielectric substrate and a semiconductive material having an ionizable salt dissolved therein. The semiconductor material provides a sermiconductive bridge across an activation or deactivation point in the circuit and connects the conductive circuit on both sides of the activation or deactivation point. The resonant tag circuit of this invention is stabilized against premature operation of the activation or deactivation point from electrostatic discharge.
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