Patent ID: 6881691

Claim:
A dielectric ceramic article precursor comprising from about 1 wt. % to about 99 wt. % of a crystalline aluminosilicate zeolite or an amorphous aluminosilicate derived from the zeolite, from about 99 wt. % to about 1 wt. % of a glass phase, and from about 1 to about 10 wt. % of ZnO, the zeolite having a composition on an anhydrous basis represented by an empirical formula of: A 1/n Si x AlO y where A is an exchangeable cation selected from the group consisting of alkali metals, alkaline earth metals, transition metals, zinc, rare earth metals and mixtures thereof, “n” is the valance of A and varies from about 1 to about 3, “x” has a value from about 1 to about 10 and “y” has a value which balances the sum of the valences of (A+Si+Al).