Crystallized glass, and method for producing crystallized glass

Compositions: ceramic – Ceramic compositions – Devitrified glass-ceramics

Reexamination Certificate

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C501S007000

Reexamination Certificate

active

08043985

ABSTRACT:
Provided are SiO2—Al2O3-based or Li2O—Al2O3—SiO2-based crystallized glass which has various properties intrinsic to the crystallized glass of the type and which contains an arsenic component or an antimony component in an amount as small as possible or does not contain an arsenic component and an antimony component; and a method for producing the crystallized glass. The crystallized glass contains components of SiO2and Al2O3(as oxides) and contains an SnO2component (as oxide) and/or a CeO2component (as oxide). Preferably, the glass contains from 0.01 to 5.0% (as oxide) of an SnO2component and/or from 0.01 to 5.0% (as oxide) of a CeO2component.

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