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:
Dec. 27, 2022
Filed:
Apr. 17, 2019
Applicant:
Agc Inc., Chiyoda-ku, JP;
Inventors:
Assignee:
AGC INC., Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
C03C 3/083 (2006.01); C03B 23/03 (2006.01); C03C 3/085 (2006.01); C03C 3/087 (2006.01); C03C 3/091 (2006.01); C03C 3/093 (2006.01); C03C 3/097 (2006.01); C03C 21/00 (2006.01); C03B 23/035 (2006.01); C03B 23/025 (2006.01);
U.S. Cl.
CPC ...
C03C 3/083 (2013.01); C03B 23/0302 (2013.01); C03C 3/085 (2013.01); C03C 3/087 (2013.01); C03C 3/091 (2013.01); C03C 3/093 (2013.01); C03C 3/097 (2013.01); C03C 21/00 (2013.01); C03C 21/002 (2013.01); C03B 23/0252 (2013.01); C03B 23/0357 (2013.01);
Abstract
A glass for chemical strengthening has a Young's modulus E of 70 GPa or more. The glass satisfies X+X+Xbeing 1760 or less. Here, Xis a numerical value equivalent to a value [unit: kPa/° C.] obtained by multiplying the Young's modulus E by an average coefficient α of thermal expansion at 50° C. to 350° C., Xis a numeral value equivalent to a value of a temperature Tf [unit: ° C.] at which a viscosity of the glass reaches 100 MPa·s, and Xis a numerical value equivalent to a value of a difference [unit: 10Pa·s] between the viscosity (100 MPa·s) at the Tf and a viscosity ηat a temperature 10° C. higher than the Tf.