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Expired Canadian patentCanada

Reactor for processing a catalyst material

CA 2042801 C · Owner: Wilson, Michael F. · Inventors: Steel, Thomas M.; Wilson, Michael F.; Duley, Walter Winston

CIPO record

Overview

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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 reactor for processing a catalyst material comprises a reaction chamber including a support for the catalyst material. A laser radiation entry means a gas inlet and an exhaust are provided each in communication with the reactionchamber. The gas inlet permits entry in the chamber of an oxidizing gas which assists in processing the catalyst material when exposed to laser radiation entering the chamber. Any resulting exhaust gases are then removed from the chamber through the exhaust. A drive means is provided to move the support in a manner such thatthe catalyst is moved through the laser radiation. The apparatus is useful in reactivate deactivated catalysts, such as hydroprocessing …

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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 May 16, 1991 and granted December 3, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 16, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 16, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 16, 1991
GrantedDecember 3, 1996
Term endedMay 16, 2011
Patent numberCA 2042801 C
Classification (IPC)B01J38/22 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedMay 16, 1991Patent grantedDec 3, 1996Term endedMay 16, 2011

Sources & verification

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