Granulated metallic iron superior in rust resistance and method for producing the same
CA 2642896 C · Owner: Kobe Steel, Ltd. · Inventors: Tsuge, Osamu; Tokuda, Koji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An object of the present invention is to provide a method for producing granulated metallic iron superior in rust resistance. Another object of the present invention is to provide a method for producing such granulated metallic iron. In the method the granulated metallic iron is produced by agglomerating a material mixture including an iron- oxide - containing material and a carbonaceous reducing agent; charging and heating the agglomerated material mixture in a moving hearth- type reducing furnace to reduce the iron oxide in the material mixture with the carbonaceous reducing agent to obtain hot granulated metallic iron; and cooling the hot granulated metallic iron wherein the hot …
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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 March 24, 2006 and granted January 15, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 24, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.