Overproduction of riboflavin in yeast
CA 2268382 A1 · Owner: Demchyshyn, Vasyl V. · Inventors: Fedorovych, Dariya; Babyak, Lyubov Ya.; Van Loon, Adolphus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Recombinant strains of Bacillus subtilis for the production of riboflavin by fermentation have been described, e.g. in EP 405 370. These strains carry the riboflavin, operon under the control of a strong promoter directing the production of the cognate, enzymes in large amount. The gene constructs of the riboflavin operon under the control of a, strong promoter can be present at one or several different locations on the B. subtilis, chromosome. The incorporation of an additional gene of the riboflavin pathway under the, control of a strong promoter at a separate locus on the B. subtilis chromosome has also been, shown to increase the yield of riboflavin obtained by fermentation see EP …
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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 April 21, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 21, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2021.
- 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
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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.