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Method for determining analyte concentration using periodic temperature modulation and phase detection

CA 2362780 A1 · Owner: Optiscan Biomedical Corporation · Inventors: Kramer, Charles E.; Braig, James R.; Goldberger, Daniel S.

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Abstract From the Canadian patent

A method of determining the analyte concentration of a test sample is described. A temperature gradient is introduced in the test sample (102). Infrared radiation detectors measure radiation at selected analyte absorption peak, and reference wavelengths (104). Reference and analyte signals are , detected. In the presence of the selected analyte parameter differences , between reference and analytical signals are detectable. These parameter differences, having a relationship to analyte concentration are measured, correlated, and processed to determine analyte concentration in the test sample (106). Accuracy is enhanced by inducing a periodically modulated temperature gradient in the …

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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 10, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 10, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 10, 2022.
  • 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 10, 2000
GrantedNo grant recorded
Term endedMarch 10, 2020
Patent numberCA 2362780 A1
Classification (IPC)A61B5/00

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedMarch 10, 2000Term endedMarch 10, 2020

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