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Expired Canadian patentCanada

Method for the analysis and monitoring of the partial discharge behavior of an electrical operating means

CA 2455206 C · Owner: Freisleben, Bernd · Inventors: Mustafaraj, Eniana; Hoof, Martin; Freisleben, Bernd

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Abstract From the Canadian patent

A description is given of a method for the analysis and/or monitoring of the partial discharge behavior of an electrical operating means in particular in terms of its development over time. Here appropriate partial discharge data is recorded in process state matrices (2 3), in which, in each case in a matrix element (5) of the process state matrix (1) the amplitude (7) of a partial discharge its phase angle (6) and its frequency of occurrence is depicted (in particular what is known as a PRPD representation). A simplified analysis is made possible by the fact that at a first time, a partial discharge process state is registered in a first process state matrix (2) and at a later time, a …

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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 January 14, 2004 and granted May 1, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 14, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 14, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 14, 2004
GrantedMay 1, 2012
Term endedJanuary 14, 2024
Patent numberCA 2455206 C
Classification (IPC)G01R31/12 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedJan 14, 2004Patent grantedMay 1, 2012Term endedJan 14, 2024

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