US 11,945,747 B2
Low viscosity glasses and methods and systems for manufacture
Timothy Michael Gross, Corning, NY (US); Xiaoju Guo, Pittsford, NY (US); Shawn Rachelle Markham, Harrodsburg, KY (US); Charlene Marie Smith, Corning, NY (US); and Jae Hyun Yu, Big Flats, NY (US)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Feb. 25, 2021, as Appl. No. 17/185,023.
Application 17/185,023 is a continuation of application No. 15/799,430, filed on Oct. 31, 2017, granted, now 10,968,134.
Claims priority of provisional application 62/565,190, filed on Sep. 29, 2017.
Claims priority of provisional application 62/452,004, filed on Jan. 30, 2017.
Claims priority of provisional application 62/418,367, filed on Nov. 7, 2016.
Prior Publication US 2021/0238080 A1, Aug. 5, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C03C 3/091 (2006.01); C03C 3/083 (2006.01); C03C 3/089 (2006.01); C03C 3/093 (2006.01); C03C 3/097 (2006.01); C03C 21/00 (2006.01)
CPC C03C 3/091 (2013.01) [C03C 3/083 (2013.01); C03C 3/089 (2013.01); C03C 3/093 (2013.01); C03C 3/097 (2013.01); C03C 21/002 (2013.01)] 18 Claims
 
1. A glass article comprising a glass that comprises on an oxide basis:
from greater than or equal to 60 mol % to less than or equal to 74 mol % SiO2;
from greater than or equal to 7 mol % to less than or equal to 18 mol % Al2O3;
from greater than or equal to 3 mol % to less than or equal to 16 mol % B2O3;
from greater than or equal to 0 mol % to less than or equal to 5 mol % P2O5;
from greater than or equal to 0 mol % to less than or equal to 0.2 mol % SnO2;
from greater than 0 mol % to less than or equal to 6 mol % Na2O;
from greater than or equal to 0 mol % to less than 0.1 mol % K2O;
from at least 5 mol % to less than or equal to 11 mol % Li2O;
from greater than 0 mol % to less than or equal to 6.5 mol % of MgO; and
from greater than 0 mol % to less than or equal to 5 mol % of CaO,
wherein:
(a) the glass article comprises a fusion line as a result of having been produced by a method comprising a fusion draw process; and
(b) the glass of the glass article has a liquidus viscosity that is less than or equal to 300 kP.