Method of heating a continuously charged furnace particularly for steel-making products, and continuously charged heating furnace
CA 2286967 A1 · Owner: L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude · Inventors: Le Gouefflec, Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The products (1) pass from a charging end (2) to a discharging end (3); at the discharging end side the furnace exhibits a heating zone (4) equipped with air/fuel burners (41), possibly doped with oxygen and, on the charging end side, exhibits a flue-gas recuperation or drainage zone (5) in which the flue gases are removed. At least one fuel body in the gaseous state is incorporated into the flue gases, and oxygen is introduced upstream of that possibly doped air/fuel burner (41) which is situated furthest upstream when referring to the direction of travel of the products (1), so as to burn the gaseous fuel body and thus raise the temperature in the recuperation zone (5). Possible use for …
Read the whole patent
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 October 20, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 20, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 20, 2021.
- 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.