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Expired Canadian patentCanada

Hydrodesulfurization process employing a guard reactor

CA 1114766 A · Owner: Gulf Research & Development Company · Inventors: Lese, Henri K.; Frayer, James A.; Paraskos, John A.

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Abstract From the Canadian patent

Abstract of the Disclosure, An asphaltene-containing oil hydrodesulfurization process employing a guard reactor and a main reactor in series with the, diameter of the guard reactor being smaller than the diameter of the main reactor. The catalyst in the guard reactor comprises particles of supported Group VI and Group VIII metals in the form of elongated extrudates whose surface is provided with a plurality of alternating longitudinal grooves and protrusions. An advantageous mass velocity-related activity effect is demonstrated when catalyst particles having this shape are disposed in a guard reactor having a smaller diameter than the diameter of the main reactor with which it is …

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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 December 22, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 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.
FiledApril 18, 1978
GrantedDecember 22, 1981
Term endedDecember 22, 1998
Patent numberCA 1114766 A
Classification (IPC)C10G45/22 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedApril 18, 1978Patent grantedDec 22, 1981Term endedDec 22, 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.