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Expired Canadian patentCanada

Device for holding a granular catalyst

CA 1108059 A · Owner: Hoechst Aktiengesellschaft · Inventors: Goedicke, Eitel

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

A GRANULAR CATALYST ABSTRACT OF THE DISCLOSURE:, Device for holding a granular catalyst suitable for use in the decontamination of exhaust gas from an internal combustion engine. The device comprises a housing which is closed by means of end plates and provided with a gas inlet and gas outlet and in which there is disposed a sleeve having perforated walls which are substantially circular in cross-section, this sleeve being disposed therein substantially concentrically with respect to the gas inlet. The device is provided with one or more flowdefining means which are accommodated in the housing the gas flow-defining means causing gas admitted to the housing to be at least partially directed …

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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 September 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 1, 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.
FiledDecember 1, 1977
GrantedSeptember 1, 1981
Term endedSeptember 1, 1998
Patent numberCA 1108059 A
Classification (IPC)F01N3/10 +1 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedDec 1, 1977Patent grantedSep 1, 1981Term endedSep 1, 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.