US 11,987,523 B2
Hot-formed, chemically prestressable glass articles with a low proportion of crystals and methods and devices for producing
Thomas Schmiady, Jena (DE); Thomas Seuthe, Jena (DE); Jörg Hessenkemper, Jena (DE); Sebastian Leukel, Mainz (DE); and Susanne Krüger, Mainz (DE)
Assigned to SCHOTT AG, Mainz (DE)
Filed by SCHOTT AG, Mainz (DE)
Filed on Nov. 30, 2023, as Appl. No. 18/524,782.
Application 18/524,782 is a continuation of application No. 16/986,196, filed on Aug. 5, 2020, granted, now 11,878,939.
Claims priority of application No. 10 2019 121 146.8 (DE), filed on Aug. 5, 2019.
Prior Publication US 2024/0092684 A1, Mar. 21, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C03C 3/097 (2006.01); C03B 17/06 (2006.01); C03C 3/083 (2006.01); C03C 3/085 (2006.01); C03C 3/087 (2006.01); C03C 3/091 (2006.01); C03C 3/093 (2006.01); C03C 21/00 (2006.01)
CPC C03C 3/097 (2013.01) [C03B 17/064 (2013.01); C03C 3/083 (2013.01); C03C 3/085 (2013.01); C03C 3/087 (2013.01); C03C 3/091 (2013.01); C03C 3/093 (2013.01); C03C 21/002 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A chemically prestressable, hot-formed, plate-shaped glass article, the glass article comprising:
a composition comprising SiO2, Al2O3, and Li2O;
a content of ZrO2, SnO2, and TiO2 that totals at least 0.8 wt %; and
at most ten crystals or crystallites per kilogram of glass that have a maximum diameter greater than 1 μm and less than or equal to 5 μm.