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Expired Canadian patentCanada

Ethylene oxide production

CA 1093053 A · Owner: Texaco Development Corporation · Inventors: Cavitt, Stanley B.

CIPO record

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Abstract From the Canadian patent

An improved method is disclosed for the vapor phase epoxidation of ethylene to ethylene oxide which includes intimately contacting an ethylene-containing feed stream with an epoxidizing amount of molecular oxygen epoxidizing agent in the presence of a catalytically effective amount of a novel supported, activated silver catalyst and an effective amount of at least one inhibitor which retards combustion of ethylene to carbon dioxide at a temperature of from about 200°C to about 300°C. The novel silver catalyst is best described in terms of its method of preparation. The catalyst is prepared by impregnating certain inorganic porous substrates with a specific silver carboxylate/amine complex …

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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 6, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 6, 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 24, 1976
GrantedJanuary 6, 1981
Term endedJanuary 6, 1998
Patent numberCA 1093053 A
Classification (IPC)B01J23/66 +2 more

Timeline

Timeline From CIPO dates

19771980198319861989199219951998Application filedDec 24, 1976Patent grantedJan 6, 1981Term endedJan 6, 1998

Sources & verification

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