US 12,378,153 B2
Ion exchangeable glass with high crack initiation threshold
Timothy Michael Gross, Corning, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Jun. 22, 2023, as Appl. No. 18/212,993.
Application 18/212,993 is a continuation of application No. 16/793,398, filed on Feb. 18, 2020, granted, now 11,724,958.
Application 16/793,398 is a continuation of application No. 15/696,831, filed on Sep. 6, 2017, granted, now 10,562,806, issued on Feb. 18, 2020.
Application 15/696,831 is a continuation of application No. 14/842,122, filed on Sep. 1, 2015, granted, now 9,783,453, issued on Oct. 10, 2017.
Application 14/842,122 is a continuation of application No. 13/678,013, filed on Nov. 15, 2012, granted, now 9,156,724, issued on Oct. 13, 2015.
Claims priority of provisional application 61/560,434, filed on Nov. 16, 2011.
Prior Publication US 2023/0339802 A1, Oct. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C03C 3/097 (2006.01); C03C 3/083 (2006.01); C03C 3/085 (2006.01); C03C 3/087 (2006.01); C03C 21/00 (2006.01); C03C 3/04 (2006.01); C03C 3/062 (2006.01); C03C 3/064 (2006.01); C03C 3/091 (2006.01); C03C 3/093 (2006.01); C03C 4/18 (2006.01)
CPC C03C 3/097 (2013.01) [C03C 3/083 (2013.01); C03C 3/085 (2013.01); C03C 3/087 (2013.01); C03C 21/002 (2013.01); C03C 3/04 (2013.01); C03C 3/062 (2013.01); C03C 3/064 (2013.01); C03C 3/091 (2013.01); C03C 3/093 (2013.01); C03C 4/18 (2013.01); C03C 21/00 (2013.01); C03C 2204/00 (2013.01); Y10T 428/265 (2015.01); Y10T 428/315 (2015.01)] 20 Claims
 
1. An alkali aluminosilicate glass comprising:
from 40 mol % to 70 mol % SiO2;
from 11 mol % to 25 mol % Al2O3;
from 4 mol % to 15 mol % P2O5;
from 13 mol % to 20 mol % Na2O;
Li2O; and
less than or equal to 4 mol % B2O3,
wherein 1.3<[(P2O5+R2O)/M2O3]≤2.3, where M2O3=Al2O3+B2O3, and R2O is a sum of monovalent cation oxides present in the alkali aluminosilicate glass.