Methods, compositions and devices for growing cells
CA 2062741 A1 · Owner: Emerson, Stephen G. · Inventors: Clarke, Michael F.; Palsson, Bernhard O.; Emerson, Stephen G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods, compositions and devices are provided for the growth of hematopoietic cells in culture. Bioreactors (10) are provided where appropriate levels of nutrients and growth factors are substantially continuously maintained in the bioreactor (10) while removing undesirable metabolic products. At least one growth factor is provided through excretion by transfected stromal cells particularly heterologous cells. Elements (28 30) are provided for, maintaining the stromal cells and hematopoietic cells separately to , allow for easy removal of the hematopoietic cells.
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 June 14, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 14, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 14, 2012.
- 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.