Methods for absolute cell counting
CA 2475306 A1 · Owner: Cardiff & Vale National Health Service Trust · Inventors: Williams, Paul Eirian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for determining the absolute cell count of an identifiable cell sub-population contained in a sample by introducing into an aliquot of said biological sample a pre-determined amount of a fluid reagent comprising a known concentration of fixed and labelled cells; then using flow cytometry to determine an absolute cell count of said 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 February 26, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 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.