Method of thawing cryopreserved cells
CA 2216203 A1 · Owner: Chandler, Barbara A. · Inventors: Mullon, Claudy J-P; Chandler, Barbara A.; Cain, Shawn P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention features a method of processing cryopreserved cells by thawing and equilibrating the cells at warm temperatures (e.g. between 30°C and 43°C). Either the cell suspension in the cryoprotective medium is thawed to a temperature between 35°C and 43°C or the cryoprotective medium is equilibrated with a culture medium at a temperature between 30°C and 43°C or both, steps are carried out at the warm temperatures. By thawing and equilibrating the cryopreserved cells at warm temperatures, the viability, (especially after 3 hours of culture), and metabolic activity (i.e. diazepam metabolism) of the cells can be improved over traditional cold cell processing (i.e. at temperatures of …
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 September 22, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 22, 2019.
- 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.