Firing furnace with a revolving firing zone and a cooled internal wall
CA 2184410 C · Owner: Aluminium Pechiney · Inventors: Charmier, Francois; Breme, Philippe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A furnace (1) with a revolving firing zone for firing carbon-containing materials comprising for example two parallel rows (2a 2b) of firing chambers (3a, 3b) arranged with their own thermal insulation (17a 17b) together or separately in a casing (8) generally made of concrete, which is cooled at least by the ventilation of its two external walls (9a 9b). The two rows (2a, 2b) of firing chambers (3a 3b) are separated by a single specifically cooled internal wall (10) secured to the casing bottom or floor (12). Said cooled internal wall (10) comprises a network of vertical horizontal or other ducts or channels (16) for a liquid or gaseous coolant fluid flow preferably consisting of two …
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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 January 23, 1996 and granted July 15, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 23, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 23, 2018.
- 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.