Desensitizing apparatus for electromagnetic article surveillance system
CA 2104333 C · Owner: Zarembo, Peter J. · Inventors: Zarembo, Peter J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A desensitizing apparatus (30) for magnetizing a desensitizable marker (38) used with an electromagnetic article surveillance system. The apparatus includes, a rectangular, non-metallic plate (50) positioned so that its length is perpendicular, to a likely direction of travel (68) of the marker to be magnetized. A row of X-, shaped arrays (60) of elongated magnets (52 54, 56) is embedded on the plate. A marker passing over the row of magnets will be desensitized regardless of its, orientation or direction of travel over the magnets.
Read the whole patent
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 August 18, 1993 and granted October 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 18, 2015.
- 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.