	US 12,421,159 B2
	High strain point and high young's modulus glasses
Venkatesh Botu, Corning, NY (US); Xiaoju Guo, Pittsford, NY (US); Ellen Anne King, Corning, NY (US); Lisa Ann Lamberson, Painted Post, NY (US); Adama Tandia, Corning, NY (US); Kochuparambil Deenamma Vargheese, Horseheads, NY (US); and Jingshi Wu, Painted Post, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Feb. 16, 2024, as Appl. No. 18/443,813.
Application 17/886,690 is a division of application No. 17/254,237, granted, now 11,420,897, issued on Aug. 23, 2022, previously published as PCT/US2019/036280, filed on Jun. 10, 2019.
Application 18/443,813 is a continuation of application No. 17/886,690, filed on Aug. 12, 2022, granted, now 11,939,260.
Claims priority of provisional application 62/686,850, filed on Jun. 19, 2018.
Prior Publication US 2024/0317630 A1, Sep. 26, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C03C 3/087 (2006.01); C03C 3/091 (2006.01); C03C 3/095 (2006.01); G02F 1/1333 (2006.01)

CPC C03C 3/087 (2013.01) [C03C 3/091 (2013.01); C03C 3/095 (2013.01); G02F 1/133302 (2021.01); G02F 2202/09 (2013.01)]

20 Claims

1. A glass comprising in mole percent on an oxide basis:

SiO₂68.84-74.07,

Al₂O₃10.41-14.87,

B₂O₃0-0.8,

MgO 3.44-7.45,

CaO 4.19-8.23,

SrO 0-3.36,

BaO 0.91-5.59, and

SnO₂0.09-0.2%,

wherein the glass is alkali-free defined by a sum of the Na20, K20, and Li2O concentrations being equal to or less than 0.1 mol. %,

wherein the glass has a strain point greater than 752° C. and a Young's modulus greater than 83.56 GPa, and wherein Fe₂O₃is less than 0.005 mole percent in the glass,

wherein the glass is free of Y₂O₃and La₂O₃.