High corrosion resistant and high strength medium cr and low ni stainless cast steel
CA 1097949 A · Owner: Kubota, Ltd. · Inventors: Morichika, Toshiaki; Akamatsu, Katsutaro; Murakami, Shinichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The specification discloses a high corrosion resistant and high strength medium Cr and low Ni stainless cast steel and a method of preparing the same. The steel material comprises either: (A) C: 0.1% or below, Si: 1.5% or below Mn: 2.0% or, below, P: 0.04% or below, S: 0.04% or below Cr: 17.0% to 20.0%, Ni: 3.0% to 7.0%, Mo: 1.5% to 2.5% Cu: 5.0% to 7.0%, N: 0.1%, or below and the balance substantially of Fe; or (B) C:0.1% or below, Si: 0.5% or below, Mn: 2.0% or below P: 0.04% or below, S: 0.04% or below, Cr: 17.0% to 20.0% Ni: 3.0% to 7.0%, Mo: 1.5%, to 2.5%, Cu: 2.5% to 5.0% W: 0.2% to 2.0%, N: 0.1% or below and, the balance substantially of Fe with said Mo and Cu contents in, weight …
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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 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 1998.
- 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
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.