Combustion method and apparatus for nox reduction
CA 2453084 A1 · Owner: Okubo, Kyosuke · Inventors: Matsunari, Kenji; Kayahara, Toshihiro; Okubo, Kyosuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
combustion method and apparatus for NO x reduction are capable of easily achieving NO x reduction to an exhaust NO x value of 30 ppm or under. The combustion method is to perform in combination a first NO x reduction step for suppressing generated NO x value to 60 ppm or under (at 0% O2 in exhaust gas, dry basis) by a low NO x burner a second, NO x reduction step for recirculating exhaust gas of the low NO x burner to a burning reaction zone formed by the low NO x burner, and a third NO x reduction step for adding water or steam to the burning reaction zone.
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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 December 15, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 15, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2025.
- 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.