Nickel-base alloy
CA 2435342 C · Owner: Feng, Gangjiang · Inventors: Beck, Cyril, Gerard; Wood, John Herbert; Feng, Gangjiang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A castable and weldable nickel-base alloy that exhibits a desirable balance of strength and resistance to corrosion and oxidation suitable for gas turbine engine applications. A suitable composition for the alloy consists essentially of by weight, 10% to 25% cobalt, 20% to 28% chromium 1% to 3% tungsten, 0.5% to 1.5% aluminum 1.5% to 2.8% titanium, 0.8% to 1.45% columbium tantalum in an amount less than columbium and Cb + 0.508Ta is 1.15% to 1.45% 0.001% to 0.025% boron, up to 0.4% zirconium 0.02% to 0.15% carbon, with the balance essentially nickel and incidental impurities.
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 July 17, 2003 and granted November 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 17, 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.