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

Claim 10:
11. 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 one of Li2O and K2O in an amount of at least 1 mol %; 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.