Catalyst and method for reduction of nitrogen oxides
CA 2575338 C · Owner: Los Alamos National Security, Llc · Inventors: Ott, Kevin C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A Selective Catalytic Reduction (SCR) catalyst was prepared by slurry coating ZSM-5 zeolite onto a cordierite monolith then subliming an iron salt onto the , zeolite calcining the monolith, and then dipping the monolith either into an aqueous solution of manganese nitrate and cerium nitrate and then calcining or by similar treatment with separate solutions of manganese nitrate and cerium nitrate. The supported catalyst containing iron manganese, and cerium , showed (80) percent conversion at (113) degrees Celsius of a feed gas containing nitrogen oxides having (4) parts NO to one part NO2 about one , equivalent ammonia, and excess oxygen; conversion improved to (94) percent at (147) …
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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 25, 2005 and granted September 1, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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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.