Patent ID: 11919807
Assignee: CORNING INCORPORATED
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A glass composition comprising:
(a) P2O5 in an amount of 15 mol % to 40 mol %; and
(b) Nb2O5 in an amount of 10 mol % to 50 mol %; and
(c) TiO2 in an amount of 15 mol % to 30 mol %; and
(d) alkali metal oxide (R2O) selected from the group consisting of Li2O, Na2O, K2O, Rb2O, and Cs2O in an amount of 5 mol % to 25 mol %, wherein the alkali metal oxide (R2O) comprises at least two of Li2O, Na2O, and K2O, wherein the alkali metal oxide (R2O) comprises less than 20 mol % Na2O when Na2O is present; and
(e) alkaline earth metal oxide (RO) selected from the group consisting of MgO, CaO, SrO, and BaO in an amount of 5 mol % to 30 mol %, wherein the alkaline earth metal oxide (RO) comprises at least two of CaO, SrO, and BaO; and
wherein the glass composition does not include WO3, ZnO, and B2O3; and
wherein the glass composition has a molar ratio of (R2O+RO)/P2O5 greater than or equal to 1.