Method and tunnel type furnace for calcining carbonaceous bodies, in particular electrodes
CA 1250712 A · Owner: Sirma S.P.A. · Inventors: Sanchioni, Sergio; Corato, Renzo; Rosso, Antonio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
METHOD AND TUNNEL TYPE FURNACE FOR CALCINING CARBONACEOUS BODIES, IN PARTICULAR ELECTRODES" ABSTRACT OF THE DISCLOSURE, The method comprises passing preformed bodies to be calcined, containing pyrolyzable substances through, a furnace having, arranged in succession a first heating, zone, a second or combustion zone wherein volatile substance released by said bodies are subjected to combustion a third or calcining zone, and a fourth or cooling zone Separation means between the first and second zones and, between the third and fourth zones prevent the flue, gases from flowing between such zones.
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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
- Granted March 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 7, 2006.
- 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.