Zinc alloys yielding anticorrosive coatings on ferrous materials
CA 2275243 A1 · Owner: Billiet, Jeaninne · Inventors: Sprang, Wilhelmus Johanna Anthonius Maria; Bernal Ferrero, Manuel; Tierra Royo, Pedro Miguel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a zinc alloy yielding anti-corrosive coatings on ferrous materials; characterized as consisting of zinc plus its usual impurities and possibly aluminium and/or lead as well as alloying metals consisting of between x and y % of nickel together with between v and w % of at least one of the metal: vanadium and chrome wherein: x is equal to or higher than 0.001, preferably higher than 0.04 y is lower than or equal to , 0.6, preferably lower than 0.2 v is equal to or higher than 0.001, preferably higher than 0.03, w is lower than or equal to 0.6 preferably lower than 0.04.
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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, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2019.
- 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.