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:
Feb. 24, 2015
Filed:
Sep. 26, 2012
Saxon Glass Technologies, Inc., Alfred, NY (US);
Arun Kumar Varshneya, Alfred, NY (US);
Saxon Glass Technologies, Inc., Alfred, NY (US);
Abstract
There is a method for making. The method includes providing an untreated alkali aluminosilicate glass having an annealing point temperature that is at least about 580° C. The method also includes providing a mixed potassium and sodium salt bath having greater than about 50 mole % potassium salt and less than about 50 mole % sodium salt. The method also includes immersing the untreated glass in the mixed salt bath and maintaining the mixed salt bath with the immersed untreated glass within a temperature range from about 450° C. to less than the annealing point temperature of the untreated glass for a period greater than about 2 hours to produce a strengthened glass. The produced strengthened glass has a surface compression of at least about 100,000 psi and a compression case depth of at least about 600 microns.