Semi-finished products of ferritic steel
CA 1341232 C · Owner: Thyssen Edelstahlwerke Ag · Inventors: Brandis, Helmut; Frinken, Heinrich; Bohnke, Kurt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a ferritic, heat-resistant steel whose behaviour at high application temperatures is improved by the combined addition of oxygen affine elements. Apart from stabilizing the electric resistance of heating elements by addition of zirconium titanium and rare metal, also the creep elongation of the steel is considerably reduced under load at temperatures above 900°C the, thermal stress capacity thus being increased. The resulting complex oxide coating increases the protective function with regard to preserving the metallic cross-section in continuous and/or cyclic heat treatments. The steel is composed of:, max. 0.10 % C max. 0.80 % Si, 0.10 to 0.50 % Mn, max. 0.035 …
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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 May 15, 2001. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 2018.
- 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.