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Expired Canadian patentCanada

Alkoxylation using modified group iia metal-containing bimetallic or polymetallic catalysts

CA 1337940 C · Owner: King, Stephen Wayne · Inventors: King, Stephen Wayne

CIPO record

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Abstract From the Canadian patent

This invention relates to modified Group IIA metal-containing (other than calcium-containing) bimetallic or polymetallic catalysts and the use thereof in the preparation of alkoxylation products i.e. condensation reaction products of alkylene oxides and organic compounds having at least one active hydrogen. In another aspect of this invention, processes are provided for preparing the modified Group IIA metal-containing bimetallic or polymetallic catalysts for alkoxylation using a Group IIA metal or a Group IIA metal-containing compound as sources for the catalytically-active Group IIA metal. In a further aspect of this invention, processes are provided for preparing alkoxylation products …

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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 16, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 16, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 29, 1989
GrantedJanuary 16, 1996
Term endedJanuary 16, 2013
Patent numberCA 1337940 C
Classification (IPC)C07C41/03 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedSep 29, 1989Patent grantedJan 16, 1996Term endedJan 16, 2013

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