Method for preparing ammoxidation catalysts
CA 2231069 C · Owner: Albonetti, Stefania · Inventors: Blanchard, Gilbert; Cavani, Fabrizio; Burattin, Paolo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for preparing mixed vanadium, antimony and iron oxides and the use thereof as alkane ammoxidation catalysts are disclosed. According to the method for preparing said mixed oxide respective vanadium, antimony and iron compounds are dissolved in at least one saturated alcohol or water the resulting alcoholic or aqueous solution is contacted with an aqueous solution containing an ammonium salt to precipitate out the mixed oxide and the resulting mixed oxide is separated and calcined.
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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 September 27, 1996 and granted February 6, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 27, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 2018.
- 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
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.