US 11,746,046 B2
Strengthened glass with ultra deep depth of compression
Jaymin Amin, Corning, NY (US); Benedict Osobomen Egboiyi, Painted Post, NY (US); Jonathan David Pesansky, Corning, NY (US); Kevin Barry Reiman, Horseheads, NY (US); Rostislav Vatchev Roussev, Painted Post, NY (US); and Brian Paul Strines, Painted Post, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Aug. 2, 2021, as Appl. No. 17/391,269.
Application 17/391,269 is a division of application No. 16/830,889, filed on Mar. 26, 2020, granted, now 11,084,756.
Application 16/830,889 is a division of application No. 16/182,004, filed on Nov. 6, 2018, granted, now 10,640,420, issued on May 5, 2020.
Application 16/182,004 is a continuation of application No. 14/926,425, filed on Oct. 29, 2015, granted, now 10,150,698, issued on Dec. 11, 2018.
Claims priority of provisional application 62/073,252, filed on Oct. 31, 2014.
Prior Publication US 2021/0355027 A1, Nov. 18, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C03C 21/00 (2006.01); C03C 3/097 (2006.01)
CPC C03C 21/002 (2013.01) [C03C 3/097 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A glass article, the glass article having a thickness t and a compressive region having a compressive stress CSs in a range from 400 MPa to 1200 MPa at a surface of the glass article, wherein the compressive region extends from the surface to a depth of compression DOC, wherein 0.1·t≤DOC≤0.25·t, and has a compressive stress profile, the compressive stress profile comprising:
a. a first portion b extending from the surface to a depth db below the surface and having a slope mb; and
b. a second substantially linear portion c extending from dc to the depth of compression DOC and having a slope mc, wherein |mb|>>|mc|.