Mold material for forming sandmold without requiring mold wash
CA 1300789 C · Owner: Nagahori, Teiji · Inventors: Ohshima, Masanori; Nagahori, Teiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mold material for forming sandmolds for manufacturing metal castings, consisting essentially of an organic binder: 0.4 - 3.0 percent a catalyst, for curing the organic binder: 0.2 - 2.0 percent of a ceramic binder: 0.05 - 2.0 percent in terms of SiO2, a catalyst for curing the ceramic binder: 0.05 - 2.0 percent, and foundry sand: the balance. The mold material can be formed into a sandmold which is excellent in both strength after exposure under a room temperature atmosphere and strength after pouring molten metal thereinto and requires no mold wash or a very small amount of mold wash as obtained by spraying or the like. The mold material may preferably further includes, if required, …
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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 May 12, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 2009.
- 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.