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:
Jan. 10, 2023
Filed:
Jul. 29, 2021
Applicant:
Agc Inc., Tokyo, JP;
Inventors:
Kaname Sekiya, Tokyo, JP;
Yusuke Fujiwara, Tokyo, JP;
Assignee:
AGC Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B 15/04 (2006.01); B32B 17/06 (2006.01); C03C 21/00 (2006.01); C03C 3/083 (2006.01); C03C 4/18 (2006.01);
U.S. Cl.
CPC ...
C03C 21/002 (2013.01); C03C 3/083 (2013.01); C03C 4/18 (2013.01); C03C 2204/00 (2013.01);
Abstract
The present invention relates to a chemically strengthened glass having a thickness of t [mm], and having a profile of a stress value CS[MPa] at a depth x [μm] from a surface of the glass, the stress value being measured by a scattered-light photoelastic stress meter, in which a second-order differential value CS″ of the stress value CSin the profile satisfies the following expression within a range of CS≥0: 0<CS″≤0.050.