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:
Jul. 25, 2017
Filed:
Feb. 06, 2014
Corning Incorporated, Corning, NY (US);
Adam James Ellison, Corning, NY (US);
Benjamin Zain Hanson, Big Flats, NY (US);
Rostislav Vatchev Roussev, Painted Post, NY (US);
CORNING INCORPORATED, Corning, NY (US);
Abstract
Ion exchangeable glass compositions that develop concentration profiles and stress profiles that have higher magnitudes of concentration and compressive stress profiles than those provided by the error function (erfc)-shaped compressive stress profile for similar surface concentrations of stress-inducing components such as Kor KO and stresses. The advantaged stress profile is the result of a glass composition that is low in KO (or potassium) in the base glass prior to ion exchange. A glass comprising lower amounts of Kor KO has a stronger dependence of diffusivity on concentration, leading to a non-erfc-shaped concentration profile. Several glass compositions that contain low amounts of Kor KO exhibit this beneficial effect, whereas other glasses containing higher amounts of Kor KO do not exhibit this effect.