Process for producing thin sheet by continuous casting in twin-roll system
CA 2104375 C · Owner: Ueshima, Yoshiyuki · Inventors: Ueshima, Yoshiyuki; Miyazawa, Kenichi; Toh, Takehiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to the present invention, in continuous casting in a twin-roll system, a gap is provided between end faces of cooling rolls and side gates or between the circumferential surface of the cooling rolls and side faces of the side gates, and a DC magnetic field is applied to the molten metal in a pouring basin portion in the vicinity of the side gates in a vertical direction to the molten metal with DC being intensively fed to the end portion of the molten metal to generate an electromagnetic force mainly at the corner portion of the molten metal, the electromagnetic force being directed to the center portion of the molten metal thereby, preventing the occurrence of leakage from the …
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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 18, 1992 and granted August 25, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 18, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 18, 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
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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.