Method for making carbon steel bands, in particular packaging steel bands, and resulting bands
CA 2385685 C · Owner: Juckum, Catherine · Inventors: Guttmann, Michel; Faral, Michel; Regle, Helene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method for making carbon steel bands in particular packaging steel bands, which consists in: casting in the form of a thin steel band between 0.7 and 10 mm thick directly from molten metal, steel having a composition adapted for use as packaging steel; hot rolling in-line said band ending in the austenitic domain of said steel; forced cooling of said band at a speed of 80 to 400 ·C/s ending in the ferritic domain of said steel; cold rolling said band at a reduction ratio of less than 85 % at least; and annealing said band. The invention also concerns a steel band in particular for packaging, characterised in that it is obtainable by said above method.
Read the whole patent
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 20, 2000 and granted May 31, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 20, 2022.
- 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.