Austenitic nickel alloy
CA 2087995 A1 · Owner: Heubner, Ulrich · Inventors: Kohler, Michael; Heubner, Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an austenitic nickel-chromium-molybdenum alloy having high resistance to general corrosion crevice, pitting and stress crack corrosion and also intercrystalline corrosion, consisting of (in % by weight): carbon: up to 0.01%, silicon: up to 0.05% manganese: up to 0.50%, phosphorus: up to 0.020% sulphur: up to 0.010%, chromium: 14.0 to 18.0% molybdenum: 14.0 to 18.0%, cobalt: up to 2.0% tungsten. up to 0.5%, calcium 0.001 to 0.010% magnesium: 0.001 to 0.020%, aluminium: 0.05 to 0.30% nitrogen: up to 0.02%, iron up to 3.0% copper up to 0.5%, titanium up to 0.01% residue nickel and usual impurities due to melting the sum of the contents (carbon + silicon + titanium) …
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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 January 25, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 2015.
- 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.