Process for the reduction of nitrogen oxides in an effluent
CA 1306341 C · Owner: Epperly, William Robert · Inventors: Sullivan, James Christopher; Sprague, Barry Normand; Epperly, William Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is presented for the reduction of nitrogen oxides in the effluent from the combustion of a carbonaceous fuel. The process comprises introducing a treatment agent comprising a composition selected from the group consisting of NH4-lignosulfonate, calcium lignosulfonate, 2-furoic acid 1,3, dioxolane, 1,4 dioxane, tetrahydrofuran furfuryl-, amine, furfurylalcohol, gluconic acid citric acid, formic acid, n-butyl acetate 1,3 butylene glycol, methylal, tetrahydrofuryl alcohol furan, fish oil, coumalic acid, furfuryl acetate tetrahydrofuran, 2,3,4,5-tetracarboxylic acid tetrahydrofurylamine, furylacrylic acid tetrahydropyran, 2,5-furan-, dimethanol mannitol, hexamethylenediamine, …
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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
- Granted August 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 2009.
- 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.