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Expired Canadian patentCanada

Process and a fermenter for the production of alcohol

CA 1193989 A · Owner: Societe Des Produits Nestle S.A. · Inventors: Kalina, Vladimir

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A process and a fermenter for the production of alcohol by continuous fermentation of a must circulating in a closed circuit under the effect of a mammoth pump fresh, must being continuously injected into the circuit and fermented must being continuously removed from the circuit. A fermentation vat (1) has in its lower part a hydraulic stirring device (2) connected to a return pipe (3) for the recycled must. A back pressure valve (4) is provided at the top of the vat to prevent the expansion in the vat of the carbon dioxide gas which is released during fermentation. A mammoth pump (5) is positioned above the back pressure valve to be activated by means of said carbon dioxide gas in …

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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 September 24, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 25, 1983
GrantedSeptember 24, 1985
Term endedSeptember 24, 2002
Patent numberCA 1193989 A
Classification (IPC)C12P7/06 +1 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedApril 25, 1983Patent grantedSep 24, 1985Term endedSep 24, 2002

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.