Use of urea hydrogen peroxide in fuel alcohol production
CA 2300807 A1 · Owner: University Of Saskatchewan Technologies Inc. · Inventors: Narendranath, Neelakantam V.; Thomas, Kolothumannil C.; Ingledew, William M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is described for the production of alcohol in which a starch- or sugar-based aqueous fermentation medium is prepared and to this fermentation medium is added urea hydrogen peroxide in an amount sufficient to substantially reduce the level of bacterial contaminants in the fermentation medium. The urea hydrogen peroxide is left in contact with the fermentation medium for a time of at least one hour and sufficient to substantially reduce the level of bacterial contaminants. Thereafter the fermentation medium is inoculated with yeast wherein the yeast produces catalase enzyme which degrades liberated hydrogen peroxide to water and oxygen. This oxygen is needed by the yeast for …
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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 March 17, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 17, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 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.