Catalyst composition and use thereof in ethane oxidation
CA 2534872 C · Owner: Bp Chemicals Limited · Inventors: George, Richard J.; Brazdil, James Frank; Rosen, Bruce I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A catalyst composition and its use for the oxidation of ethane to ethylene and acetic acid which comprises (i) a support and (ii) in combination with , oxygen, the elements molybdenum vanadium and niobium, optionally tungsten and a component Z, which is one or more metals of Group 14 of the Periodic Table of Elements; a, b, c, d and e represent the gram atom ratios of the elements Mo, W, Z, V and Nb respectively, such that 0 <a<= 1; 0 <=b< 1 and a + b = 1; 0.05 <c<= 2; 0 <d<= 2; and 0 <e<= 1.
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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 30, 2004 and granted April 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2026.
- 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.