Patent · US Expired

Spherical casting sand

US7673668B2 · kind B2 · utility

2Cited by

2References

12Claims

0Family size

Assignee

KAO CORPORATION · JP

Inventors

Mikio Sakaguchi · Wakayama, JP
Shigeo Nakai · Toyohashi, JP
Kazuhiko Kiuchi · Ebeye, US
Akira Doi · Itami, JP

Key dates

Filing date	Dec 9, 2003
Grant date	Mar 9, 2010
Priority date	—
Expiry date	Nov 28, 2024

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC04B2235/79
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Molding sand having a high spherical degree and a low hygroscopicity produced from powder containing Al2O3 and SiO2, as main components by a flame fusion method, from which a mold having an excellent strength and a smooth surface is produced.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.