Method for manufacture of aluminum alloy casting
CA 1180989 A · Owner: Nippon Light Metal Company Limited · Inventors: Hashimoto, Akio; Ito, Tadao
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cast article of aluminum alloy is produced by pouring into a mold a molten Al-Si-Mg type casting alloy having an antimony (Sb) content in the range of about 0.03% - 1.0% by weight and, while the aolloy cast body is cooling following complete solidification but before its temperature has fallen below 450°C, placing the solidified cast body into a heating furance kept at temperatures in the range of from 500 to 550°C and retaining it at an intermediately high-temperature within that temperature range for not more than 30 minutes subsequently, quenching said cast body in cold water or hot water and thereafter subjecting the quenched cast body to a conventional artificial aging treatment. The …
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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 January 15, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 2002.
- 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.