Casting of molten metal in an open ended mold cavity
CA 2736798 C · Owner: Novelis Inc. · Inventors: Wagstaff, Robert Bruce
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a method and apparatus for casting molten metal into form-sustaining bodies such as ingots. This involves passing the metal through a annular mold , having an entry end portion a discharge end opening, and axis extending between the entry , end portion and the discharge end opening and a casting cavity within the , mold. Heat is extracted from the form-sustaining body as it emerges from the mold. By varying the rate of , heat extraction around the form-sustaining body or by varying the angle of , the axis relative to the vertical, the form-sustaining body thereby cast can be made to take on a circumferential , shape that is different from the shape of 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 October 13, 1998 and granted June 25, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2020.
- 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.