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:
May. 24, 2022
Filed:
Oct. 08, 2019
Schott Ag, Mainz, DE;
Rüdiger Dietrich, Jena, DE;
Jochen Alkemper, Klein-Winternheim, DE;
Oliver Hochrein, Mainz, DE;
Susanne Krüger, Mainz, DE;
Julia Weißhuhn, Mainz, DE;
SCHOTT AG, Mainz, DE;
Abstract
Chemically toughened glass is provided that has a depth of compressive stress for potassium of at least 4 μm and at most 8 μm; a compressive stress at a depth of 30 μm due to sodium exchange of at most 200 MPa and a minimum amount of at least 90 MPa where the thickness is 0.5 mm, at least 100 MPa where the thickness is 0.55 mm, at least 110 MPa in where the thickness is 0.6 mm, at least 120 MPa where the thickness is 0.7 mm, and at least 140 MPa where the thickness is 1 mm; a ratio of sodium exchange depth, in μm, to the thickness, in mm, that is greater than 0.130; and a normalized integral of tensile stress that is a storable tensile stress of at least 20.6 MPa and at most 30 MPa.