Methods for absolute cell counting
CA 2374159 A1 · Owner: Williams, Paul Eirian · Inventors: Williams, Paul Eirian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for determining the absolute cell count of an identifiable cell sub-population contained in a sample, the method which comprises the steps of introducing into an aliquot of the biological sample a pre-determined amount of a fluid reagent which comprises a known concentration of fixed and labeled cells and using flow cytometry to determine a count of the cells of the, cell sub-population, and to determine a count of the labeled cells. The cell sub-population count and the labeled cell count is used to determine an absolute cell count of cell sub-population.
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 March 1, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 1, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 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.
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.