Bacterial strains and fermentation processes for the production of 2-keto-l-gulonic acid
CA 2408068 A1 · Owner: Yang, Yueqin · Inventors: Liaw, Hungming J.; Eddington, John M.; Yang, Yueqin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to novel bacterial strains belonging to the genera Gluconobacter, Ketogulonogenium and Bacillus useful for the production of 2-keto-L-gulonic acid. The present invention further relates to the use of these strains for the production of 2-keto-L-gulonic acid in mixed culture by fermentative conversion of D-sorbitol. The present invention further relates to the strains of the present invention transformed by a vector.
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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 May 4, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 4, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 4, 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.