Twin roll-type sheet continuous casting method and apparatus
CA 2084418 C · Owner: Nippon Steel Corporation · Inventors: Yasuda, Kazumi; Haga, Hiromitu; Miyazawa, Kenichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A twin roll-type sheet continuous casting apparatus includes a nozzle (14) for supplying molten metal; a pair of casting rolls (11, 12) for casting the molten metal, supplied from the nozzle (14) into a, sheet, the casting rolls being horizontally disposed in parallel relation to each other, and being cooled and, being rotated in opposite directions respectively; a, coiler (17); and a support sheet (16) extending generally horizontally below the pair of casting rolls and being, taken up by the coiler. Since tension is not applied to the cast sheet, even a brittle material not to mention a, ductile material, can be continuously cast into a sheet. And besides a dummy sheet required for …
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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 April 16, 1992 and granted February 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 16, 2014.
- 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.