Non-oxidizing heating method and apparatus therefor
CA 2173587 C · Owner: Kawasaki Steel Corporation · Inventors: Nakagawa, Tsuguhiko; Osanai, Hisashi; Yamamoto, Takemi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A non-oxidizing heating method and apparatus in which a non-oxidizing gas of high temperature is continuously generated and supplied into a furnace by changing over a plurality of heat storage type heaters alternately while repeating an operation in which one heater stores heat and the other heater heats and blows the non-oxidizing gas. Since it is possible to heat by producing a completely non-oxidizing atmosphere within the furnace the method and, apparatus can be effectively utilized in furnaces which require heating in a non-oxidizing atmosphere for example, various furnaces such as a ladle tundish, etc. used in a, field of steel manufacturing and continuous casting and, various …
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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 December 4, 1995 and granted March 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 4, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.