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Expired Canadian patentCanada

Winding for a transformer or a coil

CA 2412349 C · Owner: Weber, Benjamin · Inventors: Younger, Harald; Zillmann, Karl; Weber, Benjamin

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention relates to a winding for a transformer or a coil having a ribbon electrical , conductor (14) and having an insulating material layer (16) composed of ribbon insulation material, which are wound jointly to form turns around a winding core, with , the individual turns of the winding having a predetermined winding angle (20 24) with , respect to the winding axis (12) of the winding core and being arranged (10) , such that , they partially overlap one another and with an insulating layer being , inserted between two radially adjacent layers of turns. Furthermore the thickness of the , insulating layer is locally matched to the voltage difference determined there. In addition …

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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 November 21, 2002 and granted August 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 21, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 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.
FiledNovember 21, 2002
GrantedAugust 7, 2012
Term endedNovember 21, 2022
Patent numberCA 2412349 C
Classification (IPC)H01F5/06 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedNov 21, 2002Patent grantedAug 7, 2012Term endedNov 21, 2022

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.