Shaft furnace for producing low-oxygen iron-base metallic powder for powder metallurgy
CA 1107336 A · Owner: Kawasai Steel Corporation · Inventors: Nitta, Minoru; Sakurada, Ichio; Kajinaga, Yoshihiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A shaft furnace for producing low-oxygen iron-base metallic powder for powder metallurgy is disclosed. The shaft furnace comprises a zone for storing and feeding a metallic raw powder a preheating zone, an, induction heating zone and a zone for cutting and cooling a product cake in a vertical array from top to bottom. The preheating zone and induction heating zone have a special structure which ensures smooth descent of the raw powder and the cake.
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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 August 18, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 18, 1998.
- 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
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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.