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Expired Canadian patentCanada

Food products containing degraded cellulose derivatives

CA 2048813 C · Owner: Alko Group Ltd. · Inventors: Bagley, Lindsey; Bosdet, Sarah; Lindley, Michael

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A mixture of oligomers derived from the degradation of a cellulose derivative having an average degree of polymerization in the range of 3 to 300 and an average molecular weight in the range of 500 to 100,000 is useful in the manufacture of gelled starch food products.

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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 August 8, 1991 and granted February 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 8, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 8, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 8, 1991
GrantedFebruary 19, 2002
Term endedAugust 8, 2011
Patent numberCA 2048813 C
Classification (IPC)A23L1/05 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedAug 8, 1991Patent grantedFeb 19, 2002Term endedAug 8, 2011

Sources & verification

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