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Expired Canadian patentCanada

Process and apparatus for contacting at least two gaseous compounds which react in particular at high temperature

CA 1293851 C · Owner: Prudhon, Francois · Inventors: Prudhon, Francois

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A process is disclosed for contacting two or more compounds in gaseous form by injecting two or more separate gaseous flows into a mixing zone where, by pre-dividing each flow repetitive units of, elementary mixtures are formed from the pre-divided flows.

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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 January 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 7, 2009.
  • 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 9, 1985
GrantedJanuary 7, 1992
Term endedJanuary 7, 2009
Patent numberCA 1293851 C
Classification (IPC)B01J12/00 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedJuly 9, 1985Patent grantedJan 7, 1992Term endedJan 7, 2009

Sources & verification

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