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Expired Canadian patentCanada

Process for burning sulfur-containing fuels

CA 2521183 C · Owner: Marin, Ovidiu · Inventors: Perrin, Nicolas; Marin, Ovidiu

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 for burning a sulfur-containing fuel to produce a flue gas is disclosed. The process comprises introducing a sulfur-containing fuel into a combustion chamber, introducing an oxidant stream into the combustion chamber and mixing it with the sulfur-containing fuel to define a combustion zone and , introducing potassium carbonate into the combustion chamber. The sulfurcontaining fuel is burned to produce the flue gas and potassium sulfate.

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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 March 22, 2004 and granted May 1, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 22, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 22, 2004
GrantedMay 1, 2012
Term endedMarch 22, 2024
Patent numberCA 2521183 C
Classification (IPC)B01D53/50 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedMarch 22, 2004Patent grantedMay 1, 2012Term endedMarch 22, 2024

Sources & verification

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