Method of determining an analyte concentration in a sample from an absorption spectrum
CA 2475677 A1 · Owner: Optiscan Biomedical Corporation · Inventors: Gaffney, Robert D.; Goldberger, Daniel S.; Sterling, Bernhard B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method determines an analyte concentration in a sample including the analyte and a substance. The method (100) includes providing an absorption spectrum of the sample (200). The absorption spectrum has an absorption baseline. The method further includes shifting the absorption spectrum (300) so that the absorption baseline equals a selected absorption value in a selected wavelength range. The method further includes subtracting a substance contribution (400) from the absorption spectrum. Thus the method provides a , corrected absorption spectrum substantially free of a contribution from the substance.
Read the whole patent
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 12, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 12, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.