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:
Feb. 24, 2015
Filed:
Oct. 16, 2013
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Sang-Kook Kim, Daejeon, KR;
Won-Bae Lim, Daejeon, KR;
Du-Sun Hwang, Seoul, KR;
Dong-Kwon Lee, Daejeon, KR;
Su-Hwan Kim, Jeollanam-do, KR;
Da-Jeong Kim, Daejeon, KR;
Assignee:
LG Chem, Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/091 (2006.01); C03B 15/02 (2006.01); C03C 3/087 (2006.01); G02F 1/13 (2006.01);
U.S. Cl.
CPC ...
C03C 3/091 (2013.01); C03C 3/087 (2013.01); G02F 1/13 (2013.01);
Abstract
The present invention provides the composition of an alkali-free glass composition containing no alkali metal oxide and the preparation thereof. The alkali-free glass comprising substantially no alkali metal oxide according to the present invention comprises 61 to 73 wt % of SiO; 0.5 to 3.9 wt % of BO; 3.5 to 13.5 wt % of AlO; 9 to 13 wt % of MgO; 1 to 8 wt % of CaO; and 4 to 10 wt % of SrO, based on the total weight of oxides present therein.