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Expired Canadian patentCanada

Process for the joint combustion of off-gases and liquid residues containing chlorinated hydrocarbons

CA 1073635 A · Owner: Hoechst Aktiengesellschaft · Inventors: Hennen, Hans; Opitz, Wolfgang

CIPO record

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Abstract From the Canadian patent

Off-gases and liquid residues containing chlorinated hydrocarbons, are subjected to joint combustion by forming a mist comprising a mixture of off-gases and atomised liquid residues, the latter being atomised by means of air and/or steam, and directing this mist into a preheated combustion chamber lined with refractory bricks. The mixture is introduced into the combustion chamber Jointly with combustion air through a burner having four feed pipes arranged coaxially with respect to each other and terminating in conically tapered outlets the, three outer feed pipes defining three separate and coaxial annular zones around the innermost feed pipe. The liquid residue fed in and burnt is used in …

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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 March 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 18, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMarch 18, 1980
Term endedMarch 18, 1997
Patent numberCA 1073635 A
Classification (IPC)C01B7/01 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedMarch 18, 1980Term endedMarch 18, 1997

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