Arrangement and method for heating gas in a gas duct in connection with continuously operated sintering
CA 2420175 A1 · Owner: Niemela, Pekka · Inventors: Tulkki, Olavi; Vaananen, Eero; Pirttimaa, Jouko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an arrangement and method for heating gases in a gas circulation duct in connection with continuously operated sintering. In the sintering furnace, hot gas is fed in from above the belt in order to sinter the material located on the belt, and part of the gas circulation duct is formed as a burning zone, a burning ring where the gas is heated. The burner , ring comprises at least one burner unit directed inwardly from the circumference of the gas circulation duct.
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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 September 5, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 5, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 5, 2023.
- 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.