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Expired Canadian patentCanada

Continuous processes and equipment for the treatment of solid substances in general, with specific applications for the gasification of coals and schists and direct reduction of iron ores

CA 1105682 A · Owner: Fornoni, Luigi · Inventors: Fornoni, Luigi

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

The present invention relates to a process and equipment for the continuous treatment of solid substances in general with specific applications for the gasification of coals and shales and direct reduction of iron ores. The equipment comprises closed containers to which working pressure may be applied internally equipped with systems of deflectors which make them capable of the treating of solid substances in a continuous manner even when they are in the form of damp or clayey compositions, the said substances, are fed into the containers in moving beds or layers under gravity, in a downward direction and, are contacted with gases or vapors generated in the treatment per se and/or …

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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

  • Granted July 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 14, 1977
GrantedJuly 28, 1981
Term endedJuly 28, 1998
Patent numberCA 1105682 A
Classification (IPC)F27B15/00 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedJuly 14, 1977Patent grantedJuly 28, 1981Term endedJuly 28, 1998

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