Austenitic stainless steel
CA 2604968 C · Owner: Otsuka, Nobuo · Inventors: Otsuka, Nobuo; Nishiyama, Yoshitaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An austenitic stainless steel having excellent resistance to scale peeling which , can suppress peeling of a protective oxide scale which is formed on the steel surface , even when the steel undergoes repeated cycles of high temperature heating and cooling and which is suitable for use in a high temperature humidified gas , environment at a high temperature and particularly at 1023 K or above has a steel , composition consisting essentially of C: 0.01 - 0.15% Si: 0.01 - 3%, Mn: 0.01 , - 2%, Cu: 0.1- 2.5% Cr: 23 - 30%, Ni: 16 - 25%, Al: 0.005 - 0.20% N: 0.001 - , 0.40%, P: at most 0.04%, S: at most 0.01% at least one of Y and Ln series elements: a total , of 0.005 - 0.1 %, and a balance …
Read the whole patent
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 April 7, 2006 and granted May 29, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 7, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.