Patent ID: 6987358

Claim:
A glass for covering electrodes, which consists essentially of, as represented by mass percentage based on the following oxides, from 35 to 55% of PhO, from 15 to 30% of B 2 O 3 , from 4 to 15% of SiO 2 , from 20 to 44% of B 2 O 3 +SiO 2 , from 0.5 to 10% of TiO 2 +ZrO 2 +La 2 O 3 +Ta 2 O 5 , from 1 to 10% of Al 2 O 3 , from 12–20% of BaO, from 0 to 1% of CuO and from 0 to 1% of CeO 2 .