Method for purifying a biological composition
CA 2435848 A1 · Owner: Pages, Etienne · Inventors: Chapman, John; Pages, Etienne; Purmal, Andrei
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is based on the discovery of a method for removing an analyte from blood cells that results in a preparation of blood cells in which the level of the residual analyte is significantly reduced in the cell population. The method can be performed on large volume blood cell suspensions and the , cells prepared in this manner remain viable following prolonged storage and are suitable for therapeutic use, e.g. in transfusion applications. A preferred blood cell preparation is one that includes a red blood cell (RBC) 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 January 22, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 22, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 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.