Method for increasing the production of physiologically active substances by cultured cells
CA 2324385 A1 · Owner: Welfide Corporation · Inventors: Tamashima, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The production of a physiologically active substance by a normal, transfected or transformed cultured cell can be increased by culturing the cell in a culture medium containing cobalt and molybdenum. The culture medium is one ordinarily selected for growing those types of cells which produce a desired, physiologically active substance e.g. a, recombinant growth factor of a monoclonal antibody. When cobalt and molybdenum are included in any of these growth media, a substantial improvement in the production of a physiologically active substance by the cells can be observed. Compositions and methods utilizing cobalt and molybdenum as additives for culture media are described.
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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 October 24, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 24, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2022.
- 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.