Patent ID: 8900487

Claim:
A paste composition comprising in admixture: (i) an inorganic solids portion comprising: (a) a source of electrically conductive metal; (b) a lead-tellurium-based oxide; and (c) a discrete additive that is: (i) an oxide of a metal element selected from the group consisting of Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, and Al, and mixtures thereof, (ii) a compound capable of forming such an oxide upon heating, or (iii) a mixture of (i) and (ii) thereof; and (ii) an organic vehicle, wherein: the inorganic solids portion forms 85 to 95 wt. % of the total paste composition; the source of electrically conductive metal forms 95 to 99% by weight of the inorganic solids portion; a combination of lead and tellurium cations represents at least 60% of the cations in the lead-tellurium-based oxide; and a ratio of a cation percentage of lead to a cation percentage of tellurium in the lead tellurium based oxide ranges from 35:65 to 65:35.