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Expired Canadian patentCanada

Methanation catalyst

CA 1048482 A · Owner: E.I. Du Pont De Nemours And Company · Inventors: Stiles, Alvin B.

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

An improved nickel chromite catalyst useful for methanation is prepared by pre-reducing the hexavalent chromium component thereof to trivalent form while maintain-, ing the nickel component in unreduced oxide form. A process for methanating carbon oxides in unreduced oxide form. A process of carbon oxides and hydrogen in which the gaseous mixture is contacted with the improved nickel chromite catalyst is also disclosed.

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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 February 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 1996.
  • 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—
GrantedFebruary 13, 1979
Term endedFebruary 13, 1996
Patent numberCA 1048482 A
Classification (IPC)B01J23/86 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedFeb 13, 1979Term endedFeb 13, 1996

Sources & verification

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