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Canadian application, no grantCanada

Slagging combustion furnace and gasification and slagging combustion system

CA 2456335 A1 · Owner: Ando, Tetsuya · Inventors: Nakajima, Takashi; Kojima, Toshio; Kosugi, Shigeru

CIPO record

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Abstract From the Canadian patent

A fusion furnace (10) and a gasification fusion furnace the fusion furnace , comprising combustion chambers (11 12, 13) for melting ash and a slag falling port (17) for discharging molten slag (20) produced by melting the ash wherein the slag falling port (17) is formed of a replaceable refractory material, and the peripheral end part of the slag falling port (17) is formed higher on the upstream side of a gas flow than on the downstream side; the gasification fusion furnace comprising a fluidized gasification furnace and primary, secondary, and tertiary combustion chambers (11 12, 13), wherein a , slag falling port part block is formed on the lowest part of the secondary combustion …

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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 April 10, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 10, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 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.
FiledApril 10, 2003
GrantedNo grant recorded
Term endedApril 10, 2023
Patent numberCA 2456335 A1
Classification (IPC)F23G5/00 +2 more

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Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedApril 10, 2003Term endedApril 10, 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.