Process and device for producing a steel strip with the properties of a cold-rolled product
CA 2202616 C · Owner: Pleschiutschnigg, Fritz-Peter · Inventors: Bleck, Wolfgang; Pleschiutschnigg, Fritz-Peter; Splinter, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for producing cold-rollable steel strip consisting of the sequential steps: a) a thin slab 30 to 100 mm thick (solidification thickness) is produced from a steel melt by continuous casting; b) the thin slab produced by step a) is descaled; c) the descaled thin slab is hot-rolled at temperatures in the region of 1150 to 900 ~C to reduce its thickness by at least 50 % to provide an intermediate strip with a maximum thickness of 20 mm; d) the semi-finished strip is cooled quickly after hot-rolling; e) the cooled semi-finished strip is isothermally rolled at 850 to 600 ~C on a finishing train with at least three stands into strips with a maximum …
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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 21, 1995 and granted January 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 21, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 21, 2017.
- 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.