US 12,466,762 B2
Glass article and method of making the same
Brigitte Wölzlein, Weidenbach (DE); and Andre Petershans, Nabburg (DE)
Assigned to Schott AG, Mainz (DE)
Filed by Schott AG, Mainz (DE)
Filed on Mar. 25, 2022, as Appl. No. 17/704,248.
Claims priority of application No. 21164999 (EP), filed on Mar. 25, 2021; and application No. 21191651 (EP), filed on Aug. 17, 2021.
Prior Publication US 2022/0306518 A1, Sep. 29, 2022
Int. Cl. C03C 3/091 (2006.01); A61L 2/10 (2006.01); A61L 2/26 (2006.01); C03B 17/04 (2006.01); C03C 1/00 (2006.01); C03C 3/11 (2006.01); C03C 3/118 (2006.01); C03C 4/00 (2006.01); C03C 21/00 (2006.01); C03C 23/00 (2006.01); C03C 10/00 (2006.01)
CPC C03C 3/091 (2013.01) [A61L 2/10 (2013.01); A61L 2/26 (2013.01); C03B 17/04 (2013.01); C03C 1/00 (2013.01); C03C 3/11 (2013.01); C03C 3/118 (2013.01); C03C 4/0085 (2013.01); C03C 21/001 (2013.01); C03C 23/007 (2013.01); A61L 2202/11 (2013.01); C03C 10/0018 (2013.01)] 19 Claims
OG exemplary drawing
 
1. At least one glass article, comprising an aluminum oxide containing silicate glass matrix, the glass matrix having less than 1 SiO2-enriched glassy sphere of compositional inhomogeneities (GCI sphere) per 15 g of glass, wherein the glass matrix comprises the following components (in mol-% based on oxides):
68≤SiO2≤73;
2≤Al2O3≤5;
12≤B2O3≤24;
0≤Li2O≤2.8;
1≤Na2O≤4;
0<K2O≤2;
0<CaO≤2;
0≤SrO≤1;
0<BaO≤4; and
0<F−≤6.