Tempered glass sheet, process and apparatus therefor

Details Tempered glass sheet, process and apparatus therefor Tempered glass sheet, process and apparatus therefor

2007-12-11

2007-12-11

Blackwell, G. (Department: 1775)

Stock material or miscellaneous articles

Surface property or characteristic of web, sheet or block

Surface modified glass

C428S409000, C428S426000

Reexamination Certificate

active

10614899

ABSTRACT:
A tempered glass sheet having in its front view a peripheral region including the peripheries, and a central region (9) occupying inside the peripheral region, wherein the average surface compressive stress in the central region (9) is larger than the average surface compressive stress in the peripheral region, is presented, whereby a tempered glass sheet having a thickness thinner than conventional ones can be provided.

REFERENCES:
patent: 3186815 (1965-06-01), Jochim
patent: 3223501 (1965-12-01), Fredley et al.
patent: 4323385 (1982-04-01), Gintert et al.
patent: 4508783 (1985-04-01), Aubry et al.
patent: 5112377 (1992-05-01), Aratani
patent: 5536995 (1996-07-01), Sugawara et al.
patent: 6412309 (2002-07-01), Kajii et al.
patent: 806 999 (1959-01-01), None
patent: 6-24995 (1994-04-01), None
patent: 2001-26434 (2001-01-01), None
Patent Abstracts of Japan, JP 58-088132, May 26, 1983.
Patent Abstracts of Japan, JP 56-045833, Apr. 25, 1981.

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