Nickel alloy electroplated cold-rolled steel sheet excellent in press-formability and phosphating-treatability and method for manufacturing same
CA 2058683 C · Owner: Watanabe, Toyofumi · Inventors: Yomura, Yoshinori; Furuta, Akihiko; Ono, Tadashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A nickel alloy electroplated cold-rolled steel sheet excellent in press-formability and phosphatingtreatability, which comprises: a cold-rolled steel sheet consisting of: up to 0.06 wt.% carbon, up to 0.5 wt.% silicon, up to 2.5 wt.% manganese, up to 0.1 wt.% phosphorus, up to 0.025 wt.% sulfur, up to 0.10 wt.% soluble aluminum, up to 0.005 wt.% nitrogen and the, balance being iron and incidental impurities; a nickel alloy electroplating layer, formed on the surface of the cold-rolled steel sheet, consisting of particles of a nickel alloy, precipitated at a distribution density of at least 1x 10 12 /m2, the nickel alloy particles containing at least one of phosphorus, boron and sulfur in an …
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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 January 2, 1992 and granted December 23, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 2, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 2, 2014.
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