Fermentation methods for hepatitis vaccine production
CA 1288075 C · Owner: Fieschko, John C. · Inventors: Fieschko, John C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for culturing yeast capable of expressing an exogenous gene product wherein the yeast is cultured at about 25°C in a medium including balanced free amino acids at a concentration between about 20 g/l and about 160 g/l. Alternatively, yeast capable of expressing an exogenous gene product (e.g. the product of a gene introduced by the application of recombinant gene technology) may be introduced into a medium including a total carbon source concentration above but maintained as close to zero as possible and cultured at, about 25°C. A medium for fermentation of yeast capable of expressing an exogenous gene product includes balanced free amino acids at a concentration between about 20 …
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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
- Granted August 27, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 27, 2008.
- 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.