Glaze composition and antifouling ceramic ware

Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...

Reexamination Certificate

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C501S017000, C501S020000

Reexamination Certificate

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10481577

ABSTRACT:
A glaze composition can be used to provide a glaze layer having excellent antifouling performance and visual beauty. The glaze composition contains a glaze forming material, which has a composition determined such that a baked product obtained by baking the glaze composition comprises 55.0 to 67.0 wt % of SiO2; 8.0 to 11.0 wt % of Al2O3; 2.0 to 8.0 wt % of SnO2; 15.0 to 21.0 wt % of a divalent metal oxide; and 4.0 to 6.0 wt % of a monovalent metal oxide, with respect to a total weight of the baked product. When a glaze layer is formed by use of this glaze composition, it resists contamination. Even when a dirt deposits on the glaze layer, the dirt can be easily removed from the glaze layer. In addition, the glaze composition can provide a beautiful semi-opaque glaze layer with luster and a reduction in pore generation amount.

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patent: 6548162 (2003-04-01), Machida et al.
patent: 0 931 772 (1999-07-01), None
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patent: 03-075242 (1991-03-01), None
International Search Rerport for PCT/JP02/06660 mailed on Nov. 11, 2002.
International Preliminary Examination Report for PCT/JP02/06660 completed on May 30, 2003.

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