Switchable magnetic device
CA 2458251 C · Owner: Kocijan, Franz · Inventors: Kocijan, Franz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A switchable magnetic device with first and second permanent magnets (10 11), mounted within a housing such that the magnets (10 11) are rotatable relative , to each other between a "fully off" position in which the north and south poles of the magnets are in substantial alignment with the south and north poles respectively of the second magnet the device thus presenting a , relatively weak external magnetic field and a "fully on" position in which , the north and south poles of the first magnet are positioned substantially in alignment with the north and south poles respectively of the second magnet the device presenting a relatively strong external magnetic field. Biasing means (30) …
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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 August 26, 2002 and granted February 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 26, 2024.
- 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.