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Expired Canadian patentCanada

Methods and apparatus for monitoring consciousness

CA 2448806 C · Owner: Burton, David · Inventors: Zilberg, Eugene; Burton, David

CIPO record

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Abstract From the Canadian patent

The application discloses several inventions as follows: (a) a method of monitoring consciousness of a sentient subject and automatically detecting transition states by obtaining an EEG signal and comparing the two signals to detect the transition and provide a warning signal when the transition occurs; (b) a method or apparatus for processing a non-stationary signal including segments having increasing and decreasing amplitude representing physiological characteristics of a sentient subject by performing syntactic analysis of segments, comparing height, width and error parameters of segments to identify noise segments and replacing noise segments with a straight line before …

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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 June 13, 2002 and granted October 18, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 13, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 13, 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.
FiledJune 13, 2002
GrantedOctober 18, 2011
Term endedJune 13, 2022
Patent numberCA 2448806 C
Classification (IPC)A61B5/11 +1 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedJune 13, 2002Patent grantedOct 18, 2011Term endedJune 13, 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.