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Canadian application, no grantCanada

Rare earth metals as oxidative dehydrogenation catalysts

CA 2500631 A1 · Owner: Gaffney, Anne · Inventors: Carmichael, Lisa M.; Mcdonald, Steve R.; Allison, Joe D.

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Abstract From the Canadian patent

Catalysts and methods useful for the production of olefins from alkanes via oxidative dehydrogenation (ODH) are disclosed. The ODH catalysts include a base metal selected from the group consisting of lanthanide metals their , oxides, and combinations thereof. The base metal is more preferably selected from the group consisting of samarium, cerium praseodymium, terbium, their , corresponding oxides and combinations thereof. The base metal loading is preferably between about 0.5 and about 20 weight percent and more preferably between about 2 and about 10 weight percent. Optionally the ODH catalysts are , further comprised of a Group VIII promoter metal present at trace levels. The Group …

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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 October 2, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 2, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2025.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 2, 2003
GrantedNo grant recorded
Term endedOctober 2, 2023
Patent numberCA 2500631 A1
Classification (IPC)B01J23/00 +2 more

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2004200620082010201220142016201820202022Application filedOct 2, 2003Term endedOct 2, 2023

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