Combustion method and apparatus for staged combustion within porous matrix elements
CA 2087438 A1 · Owner: Radian Corporation And Board Of Regents · Inventors: Howell, John R.; Bell, Ronald D.; Gardiner, William C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Low NOx combustion is effected by a method wherein a fuel e.g. natural gas, and a source of oxygen e.g. air, are mixed and, the mixture is combusted in at least two successive combustion zones filled with a porous matrix, the void spaces of which provide sites at which substantially all of the said combustion occurs; viz. a first zone wherein the mixture is fuel-rich and a second, zone wherein the mixture is fuel-lean. Preferably the method, utilizes an additional combustion zone which precedes or is upstream of the first zone and is filled with a said porous matrix wherein the mixture is fuel-lean. Apparatus (110) for low NOx combustion is also provided which includes an arrangement (116 …
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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 16, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 16, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2013.
- 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.