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Expired Canadian patentCanada

Alkoxyaltion catalysis

CA 1339376 C · Owner: Mccain, James Herndon · Inventors: Hauser, Charles Frank; King, Stephen Wayne; Mccain, James Herndon

CIPO record

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Abstract From the Canadian patent

This invention relates to modified, bimetallic or polymetallic (other than Groups IA IIA and IIIB metals) 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 bimetallic or polymetallic catalysts for alkoxylation using a divalent or polyvalent metal or a divalent or polyvalent metal-containing compound as sources for the catalytically-active metal. In a further aspect of this invention, processes are provided for preparing alkoxylation products that have beneficial, narrow …

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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 August 26, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 26, 2014.
  • 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
GrantedAugust 26, 1997
Term endedAugust 26, 2014
Patent numberCA 1339376 C
Classification (IPC)C07C43/13 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedSep 29, 1989Patent grantedAug 26, 1997Term endedAug 26, 2014

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