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Expired Canadian patentCanada

Production of a fermentation product

CA 2553585 C · Owner: Hughes, Jonathan · Inventors: Mistry, Rajesh; Hughes, Jonathan; Symes, Kenneth Charles

CIPO record

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Abstract From the Canadian patent

A process of separating suspended solids from a fermentation liquor by subjecting the liquor to a solids-liquid separation stage wherein the , fermentation liquor is produced in a fermentation process for the production of a fermentation product, in which the liquor has been subjected to a temperature of at least 50~C, wherein the solids-liquid separation stage is assisted by a treatment system, characterised in that the treatment system comprises an anionic polymer selected from natural polymers and modified natural polymers having a high anionic charge such that the equivalent weight is below 300, and synthetic polymers formed from at least 50% by weight anionic monomer units.

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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 January 20, 2005 and granted May 14, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 20, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 20, 2005
GrantedMay 14, 2013
Term endedJanuary 20, 2025
Patent numberCA 2553585 C
Classification (IPC)C02F1/52 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJan 20, 2005Patent grantedMay 14, 2013Term endedJan 20, 2025

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