Method and apparatus for burning combustible solid residue from chemical plant
CA 2017626 C · Owner: Abiko, Tohoru · Inventors: Nakase, Noriaki; Masaoka, Toshiaki; Abiko, Tohoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of burning a combustible solid residue from a chemical plant, which comprises feeding a slurry of combustible solid residues in an oil the amount of, the oil being at least 0.5 part by weight per part by weight of the combustible solid residues into a burner, in a combustion furnace comprised of a main combustion chamber having the burner in its arch, a secondary combustion chamber formed in the lower portion of the main combustion chamber. and a flue gas duct provided beneath and following the secondary combustion chamberr burning the residue in the main combustion chamber conducting, the combustion gas info the secondary combustion chamber and allowing it to reside at a …
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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 May 28, 1990 and granted August 10, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2012.
- 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.