Nanocarbide precipitation strengthened ultrahigh-strength, corrosion resistant, structural steels
CA 2438239 C · Owner: Jou, Herng-Jeng · Inventors: Kuehmann, Charles J.; Jou, Herng-Jeng; Olson, Gregory B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A nanocarbide precipitation strengthened ultrahigh-strength corrosion , resistant, structural steel possesses a combination of strength and corrosion resistance comprising in combination, by weight about: 0.1 to 0.3% carbon , (C), 8 to 17% cobalt (Co) 0 to 5% nickel (Ni), 6 to 12% chromium (Cr) less , than 1% silicon (Si), less than 0.5% manganese (Mn) and less than 0.15% , copper (Cu), with additives selected from the group comprising about: less than 3% molybdenum (Mo), less than 0.3% niobium (Nb) less than 0.8% vanadium , (V), less than 0.2% tantalum (Ta) less than 3% tungsten (W), and combinations thereof, with additional additives selected from the group comprising about: less than …
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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 February 11, 2002 and granted April 5, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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