The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2024
Filed:
Jun. 20, 2023
Corning Incorporated, Corning, NY (US);
Carol Ann Click, Corning, NY (US);
Qiang Fu, Painted Post, NY (US);
Mathieu Gerard Jacques Hubert, Corning, NY (US);
Charlene Marie Smith, Corning, NY (US);
Alana Marie Whittier, Painted Post, NY (US);
CORNING INCORPORATED, Corning, NY (US);
Abstract
A glass-ceramic article comprises: a center-volume composition comprising (on an oxide basis): 55-75 mol % SiO; 0.2-10 mol % AlO; 0-5 mol % BO; 15-30 mol % LiO; 0-2 mol % NaO; 0-2 mol % KO; 0-5 mol % MgO; 0-2 mol % ZnO; 0.2-3.0 mol % PO; 0.1-10 mol % ZrO; 0-4 mol % TiO; and 0-1.0 mol % SnO. Lithium disilicate and either β-spodumene or β-quartz are the two predominant crystalline phases (by weight) of the glass-ceramic article. The glass-ceramic article further comprises tetragonal ZrOas a crystalline phase. The composition of the glass-ceramic article from a primary surface into a thickness of the glass-ceramic article can comprise over 10 mol % NaO (on an oxide basis), with the mole percentage of NaO decreasing from the primary surface towards the center-volume. The glass-ceramic article exhibits a ring-on-ring load-to-failure of at least 120 kgf, when the thickness of the glass-ceramic article is 0.3 mm to 2.0 mm.