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Expired Canadian patentCanada

A system and a computer program for the determination of quantities relating to the circulatory system of a patient

CA 2401534 C · Owner: Burger, Thorsten · Inventors: Pfeiffer, Ulrich J.; Burger, Thorsten

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Abstract From the Canadian patent

A system for the determination of quantities relating to the circulatory system of a patient, comprises a device for the non-invasive measurement of the qualitative variation over, time of the local concentration of an indicator injected into the blood circulation system, at a first position the measurement taking place at a second position of the blood, circulation system. An evaluating unit is provided in which there is , implemented an, evaluating algorithm which transforms the qualitative variation into a quantitative, variation over time of the local concentration of the indicator injected into the blood, circulation system. For the purposes of the transformation the condition is …

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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 September 6, 2002 and granted March 29, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 6, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 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.
FiledSeptember 6, 2002
GrantedMarch 29, 2011
Term endedSeptember 6, 2022
Patent numberCA 2401534 C
Classification (IPC)A61B5/02 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedSep 6, 2002Patent grantedMarch 29, 2011Term endedSep 6, 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.