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Expired Canadian patentCanada

Process for removing oxygen in foodstuffs and drinks and enzyme composition used for this purpose

CA 1281674 C · Owner: Prieels, Jean-Paul · Inventors: Prieels, Jean-Paul; Maschelein, Charles; Heilporn, Marc

CIPO record

Overview

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

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Abstract From the Canadian patent

The present invention relates to a process for removing both molecular and free-radical oxygen from foodstuff materials capable of being degraded by oxidation. The invention is accomplished by the incorporation into foodstuff materials of an enzyme composition containing an oxidase and its substrate catalase and superoxide dismutase.

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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 March 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 19, 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.
FiledMay 20, 1986
GrantedMarch 19, 1991
Term endedMarch 19, 2008
Patent numberCA 1281674 C
Classification (IPC)C12N9/00 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedMay 20, 1986Patent grantedMarch 19, 1991Term endedMarch 19, 2008

Sources & verification

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