Plain or zinc-plated steel plate coated with a zinc or zinc alloy layer comprising a polymer, and method for making same by electroplating
CA 2506355 A1 · Owner: Usinor · Inventors: Arnoux, Claude; Durand, Guy; Jacqueson, Eric
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a plain or zinc-plated steel plate additionally coated on at least one of its surfaces with a single zinc or zinc alloy layer containing 0.15 to 1 wt. % of a polymer consisting of 6 to 150 identical or different units of general formula: (CH¿2?C(R)(CONH¿2?))with R = H or CH¿3? and optionally comprising polyallyl units and a method for making said plates by electroplating in sulphate baths.
Read the whole patent
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 14, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 14, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 14, 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.