Method and device for producing molten iron
CA 2402827 A1 · Owner: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) · Inventors: Ito, Shuzo; Simmons, James C.; Tokuda, Koji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method capable of suppressing damages to furnace wall refractories in a melting furnace and making the working life of them longer and a technique capable of obtaining a molten iron with homogenized composition while keeping a high productivity upon arc heating a prereducing iron in a melting furnace to obtain a molten iron the method, comprising supplying a pre-reducing iron to a stationary non-tilting type melting furnace and melting the iron by an arc heating mainly composed of radiation heating, the melting being performed while keeping a refractory wearing index RF represented by the following equation at 400 MWV/m2 or less. RF = P x E/L2, wherein RF represents the refractory wearing …
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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 September 11, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 11, 2024.
- 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.