Barrier discharge conversion of so2 and nox to acids
CA 2263233 C · Owner: Mclarnon, Christopher R. · Inventors: Mclarnon, Christopher R.; Neister, S. Edward; Alix, Francis R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process and apparatus for reducing, particulate nitrogen oxides ("NOx"), sulfur, dioxide ("SO2") and mercury ("Hg") emis-, sions from the combustion exhaust of fossil fuel fired plants while producing an end product that is commercially useful, comprising the steps of oxidizing Hg, NOx and SO2 using a barrier, pulse, corona, or electron beam electrical discharge apparatus (100) to produce HgO and the acids HNO3 and H2SO4 col-, lecting the HgO acids and particulates in a, wet ESP (120) and separating the particulates, from the collected acid mixture then separat-, ing and concentrating the acids for industrial use.
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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 October 9, 1997 and granted January 15, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 9, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2019.
- 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
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.