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Expired Canadian patentCanada

Steam pyrolysis as a process to enhance the hydro-gasjfication of carbonaceous materials

CA 2575963 C · Owner: Hackett, Colin E. · Inventors: Norbeck, Joseph M.; Hackett, Colin E.

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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 and apparatus for producing a synthesis gas for use as a gaseous fuel or as feed into a Fischer-Tropsch reactor to produce a liquid fuel in a substantially self-sustaining process. In one embodiment a slurry of , particles of carbonaceous material in water and hydrogen from an internal , source are fed into a hydro-gasification reactor under conditions whereby methane rich producer gases are generated and fed into a steam pyrolytic reformer under conditions whereby synthesis gas comprising hydrogen and carbon monoxide are generated. A portion of the hydrogen generated by the steam pyrolytic reformer is fed through a hydrogen purification filter into the hydro-gasification …

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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 4, 2004 and granted June 17, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 4, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 4, 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.
FiledAugust 4, 2004
GrantedJune 17, 2014
Term endedAugust 4, 2024
Patent numberCA 2575963 C
Classification (IPC)F28D1/00

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedAug 4, 2004Patent grantedJune 17, 2014Term endedAug 4, 2024

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