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Expired Canadian patentCanada

Hydrodesulfurization catalyst, process therefor

CA 1063586 A · Owner: American Cyanamid Company · Inventors: Voorhies, John D.; Castellion, George A.

CIPO record

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Abstract From the Canadian patent

Hydrodesulfurization catalysts containing molybdenum and cobalt/nickel compounds carried on inorganic oxide supports are improved in activity when the molybdenum activator and cobalt/nickel promoter are separately applied in the order given and the molybdenum activator is sulfided prior to application of the cobalt/nickel promoter.

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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 October 2, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 2, 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—
GrantedOctober 2, 1979
Term endedOctober 2, 1996
Patent numberCA 1063586 A
Classification (IPC)B01J23/88 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedOct 2, 1979Term endedOct 2, 1996

Sources & verification

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