Combustion method and apparatus for reducing emission concentrations of nox and co
CA 2104744 C · Owner: Nakai, Tetsushi · Inventors: Kayahara, Toshihiro; Ikeda, Kazuhiro; Nakai, Tetsushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus which is capable of suppressing generation of NO x and reducing CO generated and preventing decrease in thermal efficiency. A combustion flame is distributed so as to cross a group of heat absorbing tubes composed of a large number of heat absorbing tubes paralleled to and spaced from one another thereby cooling the combustion flame by the group of heat absorbing tubes. A space of specific temperature zone of approximately 1000°C - 1300 °C for suppressing generation of NO x and accelerating oxidation of CO is locally formed within the group of heat absorbing tubes wherein, in the space, CO generated upstream of the spaces is oxidized by reacting with reaction radical …
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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 August 24, 1993 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 24, 2015.
- 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.