Superplastic aluminum alloy and process of producing same
CA 2210301 C · Owner: Toyota Jidosha Kabushiki Kaisha · Inventors: Miyake, Yoshiharu; Serizawa, Yoshihisa; Okochi, Yukio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a superplastic aluminum alloy in which fine particles not substantially dispersion hardening are dispersed in a sufficient amount to effect grain boundary pinning to suppress crystal grain growth during hot working thereby ensuring manifestation of superplasticity over wide ranges of working temperature and strain rate. According to the present invention a superplastic, aluminum alloy contains ceramic particles having an average particle size of from 10 nm to 500 nm in an amount of from 0.1 vol% to 5 vol% and a process of producing a superplastic aluminum alloy comprises the, steps of: hot working an aluminum alloy ingot containing ceramic particles having an …
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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
- Filed July 15, 1997 and granted December 4, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 15, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 2019.
- 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.