Silver-containing supported catalysts and catalyst intermediates, processes for their preparation and their use
CA 2260433 A1 · Owner: Bp Koln Gmbh · Inventors: Reimer, Alfred; Volprecht, Werner; Baum, Matthias
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to silver-containing and optionally promoter-containing supported catalysts and catalyst intermediates processes , for their, preparation and their use for preparing alkylene oxides by oxidation of alkenes, with oxygen. The catalysts are prepared by treatment of a support with a lactic acid containing, silver ions, nitrate ions and optionally promoter metal ions drying, predecomposition in a virtually oxygen-free atmosphere and subsequent activation, by heating in an oxygen-containing atmosphere while precisely controlling the temperature conditions and the feeding-in of oxygen. The catalyst intermediates, obtainable by treatment drying and only …
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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 26, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 2021.
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Timeline
Timeline From CIPO dates
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.