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Expired Canadian patentCanada

Process and apparatus for the treatment of co2-containing gas using carbonic anhydrase

CA 2509989 C · Owner: Co2 Solutions Inc. · Inventors: Fradette, Sylvie

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 using a spray absorber bioreactor for the biocatalytic treatment of gases is disclosed. The process comprises the steps of contacting a gas phase containing a gas to be treated, to a liquid phase containing a reactant capable of chemically reacting with and/or absorbing the gas thereby , producing a spent liquid phase containing at least one reaction product and a treated gas phase substantially free of the gas such step being performed in , the presence of biocatalysts suitable for catalyzing the chemical reaction between the gas and the reactant. The process is characterized in that the gas phase is contacted to spray droplets of liquid phase containing biocatalysts. The …

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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 December 18, 2003 and granted December 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 18, 2003
GrantedDecember 4, 2012
Term endedDecember 18, 2023
Patent numberCA 2509989 C
Classification (IPC)B01D53/84 +2 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedDec 18, 2003Patent grantedDec 4, 2012Term endedDec 18, 2023

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