Casting process for continuous castings
CA 2098572 C · Owner: Kawasaki Steel Corporation · Inventors: Takeuchi, Shuji; Tozawa, Hirokazu; Itoyama, Seiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a process of withdrawing castings while vertically oscillating a mold formed with long side walls and short side walls in vertical continuous casting, the long side walls are separated from the castings by operating a hydraulic cylinder 4 in the time zones for which the castings are applied with a large frictional force. On the contrary the separated, long side walls are made close to the castings in the other time zones for which the castings are not applied with the large frictional force. By repeating the separation and approaching of the long side walls it, is possible to obtain the castings reduced in the depths of oscillation marks and suppressed in segregations at oscillation mark …
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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 22, 1992 and granted December 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 22, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 22, 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.