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:
Jul. 02, 2024
Filed:
Sep. 28, 2020
Applicant:
Agc Inc., Tokyo, JP;
Inventors:
Suguru Murayama, Tokyo, JP;
Akio Koike, Tokyo, JP;
Assignee:
AGC Inc., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/091 (2006.01); C03C 3/085 (2006.01); C03C 3/087 (2006.01); C03C 3/093 (2006.01); C03C 21/00 (2006.01);
U.S. Cl.
CPC ...
C03C 3/091 (2013.01); C03C 3/085 (2013.01); C03C 3/087 (2013.01); C03C 3/093 (2013.01); C03C 21/002 (2013.01);
Abstract
The purpose of the present invention is to provide a glass for chemical strengthening that exhibits a high strength after chemical strengthening and is resistant to devitrification. The present invention relates to a glass for chemical strengthening that contains, expressed as mol % on an oxide basis, 55 to 70% SiO, 10 to 25% AlO, 1 to 20% LiO, 0 to 8% CaO, 0 to 8% SrO, and 0 to 5% ZrO, in which the sum of the contents of CaO and SrO is 1.5 to 10%, the sum of the contents of NaO and KO is 3 to 11%, and the value X given by the formula ([LiO]+[KO])/[AlO] is 0.1 to 1.1.