Inductance arrangement
CA 2332363 C · Owner: Wobben, Aloys · Inventors: Wobben, Aloys
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns an inductance arrangement or the construction of inductors, chokes and transformers with a very high power density. Chokes are usual examples of inductance arrangements. Such a choke comprises a magnetic circuit and an electrical circuit the latter, usually comprising a copper winding. Depending on the respective area of use involved the magnetic circuit comprises laminated dynamo plates at lower and medium frequencies, while at higher frequencies it comprises for example ferrite. The object of the present invention is to improve the cooling of the magnetic circuit, to improve the efficiency of the induction arrangement described in the opening part of this …
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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 February 25, 2000 and granted November 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 25, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 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.
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.