Surface-treated metal sheet which excels in workability, electrical conductivity and corrosion resistance, and method of producing the same
CA 2110124 C · Owner: Naruse, Yoshihiro · Inventors: Mabuchi, Masaki; Kikuchi, Katsuhei; Totsuka, Nobuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surface-treated metal sheet which excels in workability, electrical conductivity and corrosion resistance has a metal sheet which has been plated as required a, chromate layer as a first layer formed on at least one side of the metal sheet, with a deposition amount of about 5 to 200 mg/m2 as calculated on the basis of Cr and a second layer, formed on the first layer from organic lubricant particles with a deposition amount of from about 5 to 1000 mg/m2 such, that the area coated by the organic lubricant particles to the entire area of the metal sheet surface is below about 50 %. The second layer is preferably applied with a roll coater a, spin coater or a dip water, a dispersion liquid or …
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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 November 26, 1993 and granted April 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 26, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 26, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.