High strength, heat resistant aluminum-based alloys
CA 2037686 C · Owner: Nagahama, Hidenobu · Inventors: Kawanishi, Makoto; Nagahama, Hidenobu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
High strength, heat resistant aluminum-based alloys have a composition consisting of the following general formula AlaMbXd or Ala'MbQcXd wherein M, is at least one metal element selected from the group consisting of Co Ni, Cu, Zn and Ag; Q is at least one metal element selected from the group consisting of V, Cr, Mn and Fe; X is at least one metal element selected from the group consisting of Li, Mg, Si, Ca, Ti and Zr; and a a', b, c and d are, in atomic, percentages;80~a~94.5,80~a'~94,5~b~15,0.5~c~3and 0.5~d~10. In the above specified alloys aluminum intermetallic compounds are finely dispersed throughout an aluminum matrix and thereby, the mechanical, properties, especially strength and …
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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 March 6, 1991 and granted August 19, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 6, 2013.
- 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.