Strengthened glass articles and methods of making

Stock material or miscellaneous articles – Surface property or characteristic of web – sheet or block – Surface modified glass

Reexamination Certificate

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C428S409000, C501S055000, C501S068000, C501S069000, C501S070000

Reexamination Certificate

active

08075999

ABSTRACT:
A strengthened glass article having a central tension that is below a threshold value above which the glass exhibits frangible behavior. The central tension varies non-linearly with the thickness of the glass. The glass article may be used as cover plates or windows for portable or mobile electronic devices such as cellular phones, music players, information terminal (IT) devices, including laptop computers, and the like.

REFERENCES:
patent: 2008/0020919 (2008-01-01), Murata
patent: 2008/0286548 (2008-11-01), Ellison et al.
patent: 2009/0142568 (2009-06-01), Dejneka et al.
patent: 2010/0035745 (2010-02-01), Murata
patent: 2002060242 (2002-02-01), None
patent: 2004131314 (2004-04-01), None
patent: 2008001590 (2008-01-01), None
patent: 2008115071 (2008-05-01), None
patent: 2008115072 (2008-05-01), None
patent: WO 2008/044694 (2008-04-01), None
A. Varshneya: “Fundamentals of Inorganic Glasses”; 2nd Edition, Society of Glass Technology, 2006, p. 513-521.
U.S. Appl. No. 12/392,577, filed Feb. 25, 2009, Matthew John Dejneka et al., entitled “Fining Agents for Silicate Glasses”.
U.S. Appl. No. 12/393,241, filed Feb. 26, 2009, Matthew John Dejneka et al., entitled “Ion-Exchanged, Fast Cooled Glasses”.
U.S. Appl. No. 12/510,599, filed Jul. 28, 2009, Christopher M. Lee et al., entitled “Dual Stage Ion Exchange for Chemical Strengthening of Glass”.
U.S. Appl. No. 12/500,650, filed Jul. 10, 2009, Douglass C. Allan et al., entitled “Glass With Compressive Surface for Consumer Applications”.

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