Process for the epoxidation of olefins using gold-containing catalysts
CA 2399114 A1 · Owner: Wiessmeier, Georg · Inventors: Zumaque, Harry; Cunningham, A. H. Derek; Duff, Daniel-Gordon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed towards a process for the epoxidation of olefins using molecular oxygen and hydrogen, characterized in that as catalyst, a , compound comprising gold preferably in nanometer size, on a support material in which the support material contain one or more element(s) selected from the group consisting of Scandium, Yttrium, Lanthanide Zirconium, Hafnium, Vanadium, Niobium, Tantalum Chromium, Molybdenum and/or Tungsten and is essentially free of titanium is applied and a compound comprising gold, preferably in nanometer size on a support material, in which the support material contain one or more element(s) selected from the group consisting of Scandium, Yttrium, …
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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 January 25, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 25, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.