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.

Date of Patent:
Oct. 10, 2023

Filed:

Jun. 09, 2021
Applicant:

Corning Incorporated, Corning, NY (US);

Inventors:

Michael Thomas Gallagher, Painted Post, NY (US);

Suresh Thakordas Gulati, Elmira, NY (US);

Timothy James Kiczenski, Corning, NY (US);

Robert Anthony Schaut, Horseheads, NY (US);

Natesan Venkataraman, Painted Post, NY (US);

Assignee:

CORNING INCORPORATED, Corning, NY (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 17/02 (2006.01); B32B 17/06 (2006.01); C03B 23/20 (2006.01); C03B 29/02 (2006.01); C03C 21/00 (2006.01); C03C 3/085 (2006.01); C03C 3/087 (2006.01); C03C 3/091 (2006.01); C03C 3/093 (2006.01); C03C 4/18 (2006.01); C03B 17/06 (2006.01);
U.S. Cl.
CPC ...
C03B 17/02 (2013.01); B32B 17/06 (2013.01); C03B 17/025 (2013.01); C03B 17/06 (2013.01); C03B 17/064 (2013.01); C03B 23/20 (2013.01); C03B 29/025 (2013.01); C03C 3/085 (2013.01); C03C 3/087 (2013.01); C03C 3/091 (2013.01); C03C 3/093 (2013.01); C03C 4/18 (2013.01); C03C 21/002 (2013.01); B32B 2307/30 (2013.01); C03C 2204/00 (2013.01); Y10T 428/24942 (2015.01); Y10T 428/2933 (2015.01);
Abstract

A method of making a glass sheet comprises laminating a high CTE core glass to a low CTE clad glass at high temperatures and allowing the laminate to cool creating compressive stress in the clad glass, and then ion exchanging the laminate to increase the compressive stress in the outer near surface regions of the clad glass. The core glass may include ions that exchange with ion in the clad glass to increase the compressive stress in inner surface regions of the clad glass adjacent to the clad glass/core glass interfaces. The glass laminate may be formed and laminated using a fusion forming and laminating process and fusion formable and ion exchangeable glass compositions.


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