Ultrasoft stainless steel
CA 1280301 C · Owner: Kawasaki Steel Corporation · Inventors: Suzuki, Shigeharu; Narutani, Tetsu
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 ultrasoft ferritic stainless steel having excellent stamping formability and corrosion resistance in use, which consists essentially of: about 0.002 to 0.03% by weight of carbon about 0.01 to 0.30% by weight of silicon about 0.01 to, 1.5% by weight of manganese about 0.003 to 0.04% by, weight of phosphorus about 0.001 to 0.15% by weight of, sulfur about 0.02 to 1.0% by weight of nickel about, 0.005 to 0.50% by weight of copper about 0.01 to 0.6-, by weight of molybdenum about 11.5% to 20% by weight of, chromium about 0.005 to 0.03% by weight of nitrogen about 0.005% to 0.20% by weight of aluminum and the, balance consisting of iron and conventional impurities …
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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 February 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2008.
- 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.