Method for increasing mechanical properties in ductile iron by alloy additions
CA 1190400 A · Owner: Ford Motor Company Of Canada, Limited · Inventors: Kovacs, Bela V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is disclosed of making as-cast ductile iron wherein an iron melt having a chemistry capable of forming gray iron having flake graphite is treated with a nodularizing agent and solidified to provide a microstructure consisting substantially of a pearlite matrix containing uniformly distributed graphite nodules surrounded by ferrite. The iron melt is alloyed with: (a) at least one of .02-.06% Sb and .02-.08% Sn (b), .001-.0015% each of Ce and La, and (c) .5-1.0% Mn.
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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 July 16, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 16, 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
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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.