Ferritic stainless steel having good corrosion resistance
CA 1184402 A · Owner: Sumitomo Metal Industries, Ltd. · Inventors: Tarutani, Yoshio; Moroishi, Taishi; Koike, Masao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A 10 - 35%cr ferritic stainless steel stabilized with 0.20 - 1.00% of Nb wherein Nb% ? (8 x C% + 2.0%) with impurities, such as carbon, nitrogen, phosphorous oxygen, and sulfur reduced to given levels is disclosed. By reducing the sulfur content to a level of not greater than 0.002% preferably less than 0.001% or in cases where copper and/or nickel is added, to a level of not greater than 0.005% the, corrosion resistance of the resulting steel can markedly be improved. Since the ferritic stainless steel of this invention also exhibits a combination of good surface appearance and formability, it can be substituted for certain austenitic stainless steels not only …
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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
- Granted March 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 2002.
- 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.