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Expired Canadian patentCanada

Digital signal processor implementation of high impedance fault algorithms

CA 2558860 C · Owner: Haj-Maharsi, Mohamed Y · Inventors: Nuqui, Reynaldo; Kunsman, Steven A.; Stoupis, James

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Abstract From the Canadian patent

A digital signal processor implementation of three algorithms used to detect high impedance faults. The algorithms can be wavelet based higher order , statistics based and neural network based. The algorithms are modified to process one second of data instead of ten seconds of data and a double buffered acquisition is connected to the output of the algorithms.

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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 March 15, 2005 and granted October 16, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 15, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 15, 2005
GrantedOctober 16, 2012
Term endedMarch 15, 2025
Patent numberCA 2558860 C
Classification (IPC)H02H1/00

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedMarch 15, 2005Patent grantedOct 16, 2012Term endedMarch 15, 2025

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