Patent ID: 11890833
Assignee: CORNING INCORPORATED
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 1:
2. The glass-ceramic article of claim 1, further comprising:
40 mol %≤SiO2≤80 mol %;
1 mol %≤Al2O3≤20 mol %;
3 mol %≤B2O3≤50 mol %;
0 mol %≤R2O≤15 mol %, R2O is one or more of Li2O, Na2O, K2O and Cs2O;
0 mol %≤RO≤2 mol %, RO is one or more of MgO, CaO, SrO and BaO;
0 mol %≤P2O5≤3 mol %; and
0 mol %≤SnO2≤0.5 mol %,
wherein R2O (mol %) minus the Al2O3(mol %) is from −12 mol % to 4 mol %.