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. 09, 2023
Filed:
Dec. 24, 2019
Applicant:
Uti Inc., Chungcheongnam-do, KR;
Inventors:
Deok Young Park, Gyeonggi-do, KR;
Jae Young Hwang, Gyeonggi-do, KR;
Hak Chul Kim, Chungcheongnam-do, KR;
Hack Seon Kim, Chungcheongnam-do, KR;
Tea Joo Ha, Chungcheongnam-do, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 21/00 (2006.01); G02B 5/28 (2006.01); C03C 17/34 (2006.01);
U.S. Cl.
CPC ...
C03C 21/002 (2013.01); C03C 17/3417 (2013.01); G02B 5/282 (2013.01); C03C 2217/70 (2013.01);
Abstract
The present invention provides a method of increasing the strength of a glass substrate for optical filters and a tempered-glass optical filter using a tempered glass substrate manufactured using the same, in which the glass substrate for optical filters is subjected to chemical tempering so that a compressive stress (CS) and a depth of layer (DOL) of the glass substrate are adjusted to increase the bending strength thereof.