Surface treatment for metal, process for surface treatment of metallic substances and surface-treated metallic substances
CA 2451471 A1 · Owner: Henkel Kommanditgesellschaft Auf Aktien · Inventors: Sako, Ryosuke; Ueno, Keiichi; Hasegawa, Ryu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surface treatment for metal, prepared by adding a cationic or nonionic urethane, acrylic, epoxy, polyester, or polyamide resin a resin compound , represented by the general formula (I) and a compound of Zr, Ti, V, Mo, W, Mn or Ce to water; a process for surface treatment of metallic substances; and surface-treated metallic substances: (I) wherein R1 is -CH2- -CH2-NH-CH2-, or -CH=N-CH2-; Y is H or a group represented by the general formula (II): (II) Z is a residue of an aromatic compound or the like; W is H or a group (P) selected from among -CH2X, -CH2NHCH2X, and -CH=NCH2X (wherein X is OH OR4, halogeno, -N(R5)(R6), or -N+(R7)(R8)(R9)A-) with the proviso that the degree , of …
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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 June 10, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 10, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 10, 2024.
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Timeline
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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.