An exhaust gas treatment unit for the selective catalytic reduction of nitrogen oxides under lean exhaust gas conditions and a process for the treatment of exhaust gases
CA 2361029 A1 · Owner: Demel, Yvonne · Inventors: Lox, Egbert; Pfeifer, Marcus; Kreuzer, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides an exhaust gas treatment unit for the selective catalytic, reduction of nitrogen oxides under lean exhaust gas conditions which contains at least, one catalyst with catalytically active components for selective catalytic reduction (SCR, components). The exhaust gas treatment unit is characterised in that the catalyst also, contains, in addition to SCR components at least one storage component for , nitrogen oxides (NOx components).
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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 November 2, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 2, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 2, 2023.
- 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.