A process and catalyst for the selective hydrogenation of diolefins contained in an olefin containing stream and for the removal of arsenic therefrom and a method of making such catalyst
CA 2531079 C · Owner: Bhan, Opinder Kishan · Inventors: Himelfarb, Paul Benjerman; Bhan, Opinder Kishan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A catalyst having dual functionality for the removal of arsenic and the selective hydrogenation of diolefins from monoolefin-containing hydrocarbon streams that have an arsenic concentration and a diolefin concentration and , processes for making and using such catalyst. The catalyst is a heat treated shaped mixture of a refractory oxide and a Group VIII metal that is overlaid with additional Group VIII metal.
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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 June 15, 2004 and granted May 14, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 15, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 15, 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.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.