Chemical conversion coating agent and surface-treated metal
CA 2454029 A1 · Owner: Nippon Paint Co. Ltd. · Inventors: Makino, Kazuhiro; Matsukawa, Masahiko; Shimakura, Toshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
It is an object of the present invention to provide a chemical conversion coating agent whit. places a less burden on the environment and can apply good chemical conversion treatment to all metals such as iron, zinc and aluminum. A chemical conversion coating agent comprising: at least one kind selected from the group consisting of zirconium, titanium and hafnium;, fluorine; and an adhesion and corrosion resistance imparting agent wherein said adhesion and corrosion resistance imparting agent is at least one kind selected from the group consisting of:, 1 to 5000 ppm (metal ion concentration) of at least one kind of metal ion (A) selected from the group consisting of zinc ion, manganese ion …
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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 23, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2025.
- 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.