Composition for metal surface treatment, treating liquid for surface treatment, method of surface treatment, and surface-treated metal material
CA 2591214 C · Owner: Henkel Ag & Co. Kgaa · Inventors: Yoshida, Masayuki; Kawakami, Katsuyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surface-treating composition which is a treating liquid containing no ingredients harmful to the environment; such a treating liquid has been difficult to obtain with any conventional technique. The composition enables a coating film having excellent corrosion resistance after coating to be deposited through surface treatment on a surface of a metallic material e.g. an iron-based metallic material. The composition which is for the surface , treatment of a metal comprising iron and/or zinc comprises the following , ingredients (A) (B), and (C): (A) a compound containing at least one element selected from the group consisting of titanium zirconium, hafnium, and , silicon; (B) a …
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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 December 2, 2005 and granted July 25, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 2, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Timeline
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.