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Expired Canadian patentCanada

An apparatus and method for gasifying solid organic materials

CA 2733232 C · Owner: Nexterra Systems Corp. · Inventors: Barynin, Jan; Graham, Robert G.

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

A fee cone for use in a bottom-fed gasifier has a body surrounding a passage ending, in a vertically-oriented tapered channel. A plenum within the body is connected to, supply gas to first and second sets of tuyeres. The tuyeres extend through one or, both of inner and outer surfaces of the body.

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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 October 29, 2004 and granted May 29, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 29, 2024.
  • 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.
FiledOctober 29, 2004
GrantedMay 29, 2012
Term endedOctober 29, 2024
Patent numberCA 2733232 C
Classification (IPC)C10J3/48 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedOct 29, 2004Patent grantedMay 29, 2012Term endedOct 29, 2024

Sources & verification

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