Method for gas phase catalytic oxidation reaction of a hydrocarbon
CA 2296675 A1 · Owner: Shiraga, Ken · Inventors: Oshima, Kazunori; Ushikubo, Takashi; Sawaki, Itaru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for a gas phase catalytic oxidation of an alkane having 3 to 8 carbon atoms and/or an alkene having 2 to 8 carbon atoms in the presence of a composite metal oxide catalyst, characterized by conducting the reaction in the presence of particles substantially inert to the reaction; in particular a method for preparing an .alpha..beta.-unsaturated nitrile by a gas phase catalytic oxidation in the presence of ammonia; and also a method for reutilizing the inert particles after the completion of the reaction by withdrawing the inert particles in the form of a mixture thereof with the catalyst, followed by separation and recovery of the inert particles from the mixture. The method …
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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 July 14, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 14, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 2020.
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Sources & verification
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.