Patent · US Active

Glass with compressive surface for consumer applications

US8561429B2 · kind B2 · utility

172Cited by

12References

13Claims

0Family size

Assignee

CORNING INCORPORATED · US

Inventors

Douglas Clippinger Allan · Corning, US
Adam James Ellison · Corning, US
Sinue Gomez · Corning, US

Key dates

Filing date	Jul 10, 2009
Grant date	Oct 22, 2013
Priority date	—
Expiry date	Jul 10, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C21/002
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A strengthened glass that does not exhibit frangible behavior when subjected to impact or contact forces, and a method of strengthening a glass. The glass may be strengthened by subjecting it to multiple, successive, ion exchange treatments. The multiple ion exchange treatments provide a local compressive stress maximum at a depth of the strengthened layer and a second local maximum at or near (e.g., within 10 μm) the surface of the glass.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.