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Expired Canadian patentCanada

Systems and methods for making time-sequential measurements of biological events

CA 2213133 C · Owner: Swanson, David K. · Inventors: Swanson, David K.; Panescu, Dorin

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

Analog or digital systems (10) and methods generate a composite signal derived from a biological event in a time sequential fashion. A first set of signals derived from a biological event using a first group of sensors (20) during a first time interval is input. A second set of signals derived from the biological event during a second time interval sequentially after the first time interval using a second group of sensors (36) is input. The second group of sensors has at least one common sensor that is part of the first group and other sensors that are not part of the first group. The first and second sets of signals are time aligned using signals sensed by the at least one common sensor, …

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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 February 14, 1996 and granted June 17, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 14, 1996
GrantedJune 17, 2003
Term endedFebruary 14, 2016
Patent numberCA 2213133 C
Classification (IPC)A61B5/04 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedFeb 14, 1996Patent grantedJune 17, 2003Term endedFeb 14, 2016

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