Security tag deactivation system
CA 1269735 C · Owner: Kaltner, George W. · Inventors: Kaltner, George W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Security Tag Deactivation System, Abstract A system for deactivating security tags which bear a, resonant circuit made of conductors on opposite sides of a dielectric. The system deactivates by applying to a tag sufficiently high RF power at the resonance frequency to produce breakthrough between opposed conductors. A tag presence alert signal is intentionally extended beyond the period of active tag presence detection. During high power operation the system inhibits other, nearby RF deactivating and electronic article surveillance systems. The RF transmissions of all these systems may also be slaved. The high power RF produced by the deactivating system is principally dissipated where it …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 29, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 2007.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.