Distinguishing between detected eas loops and emitters
CA 2420975 C · Owner: Beart, Pilgrim · Inventors: Beart, Pilgrim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A security system for protecting articles (8) the system comprising at least , one Electronic Article Surveillance (EAS) loop (4) one Emitting Unit (7) and , one Detecting Unit (9) attached to each article (8) to be protected the , Detecting Unit (9) having a detector to detect electromagnetic fields emitted by the EAS loop (4) and the Emitting Unit (7) and to distinguish between them and an alarm generator for generating an alarm if a predetermined sequence of fields is detected. The system combines existing EAS loops (4) normally present in a retail store with Emitting Units (7) and Detecting Units (9) so as to monitor movement of articles (8) especially supermarket trolleys, around …
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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
- Filed October 4, 2000 and granted June 5, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.