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Expired Canadian patentCanada

Method for determining an acoustic environment situation, application of the method and hearing aid

CA 2439427 C · Owner: Allegro, Silvia · Inventors: Allegro, Silvia

CIPO record

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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 method and a device for determining an acoustic environment situation. The method consists of processing an acoustic input signal (IN) that is preferably picked up with the help of at least one microphone in at least two processing stages (S1 ... Sn). At least one of , the two processing stages (S1 ... Sn) comprises an extraction phase in which characteristic features are extracted from the input signal (IN) and each of the processing stages (S1, ... Sn) comprises an identification phase in which extracted characteristic features are classified. Class information (KI1 ... KIn; KI1', ... KIn') characterising or identifying the acoustic environment situation …

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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 28, 2002 and granted March 29, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 28, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 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.
FiledJanuary 28, 2002
GrantedMarch 29, 2011
Term endedJanuary 28, 2022
Patent numberCA 2439427 C
Classification (IPC)H04R25/00 +1 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedJan 28, 2002Patent grantedMarch 29, 2011Term endedJan 28, 2022

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