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.
Patent No.:
Date of Patent:
May. 02, 2023
Filed:
Dec. 11, 2019
Applicant:
Agc Inc., Chiyoda-ku, JP;
Inventors:
Kenji Imakita, Tokyo, JP;
Suguru Murayama, Tokyo, JP;
Assignee:
AGC Inc., Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
C03C 21/00 (2006.01); C03C 3/087 (2006.01); C03C 3/085 (2006.01); C03C 3/091 (2006.01); C03C 4/20 (2006.01);
U.S. Cl.
CPC ...
C03C 21/002 (2013.01); C03C 3/085 (2013.01); C03C 3/087 (2013.01); C03C 3/091 (2013.01); C03C 4/20 (2013.01); C03C 2204/00 (2013.01);
Abstract
A plate-like chemically strengthened glass having a compression stress layer on the surface of the glass, wherein the compressive stress value (CS) at the glass surface of is 500 MPa or more, the plate thickness (t) is 400 μm or more, the compressive stress depth of layer (DOL) is (t×0.15) μm or more, the compressive stress values (CS) and (CS) when the depth from the glass surface is ¼ and ½, respectively, are 50 MPa or more, mexpressed by {m=(CS−CS/(DOL/4−DOL/2)} is −1.5 MPa/μm or more, mexpressed by {m=(CS/(DOL/2−DOL)} is 0 MPa/μm or less, and mis less than m.