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:
Jun. 03, 2014
Filed:
Sep. 06, 2011
Tae Heung Kim, Busan, KR;
Duck Ki Yoon, Busan, KR;
Kang Taek Lee, Busan, KR;
Hyung Sik Lim, Busan, KR;
Ki Tae Kim, Busan, KR;
Tae Heung Kim, Busan, KR;
Duck Ki Yoon, Busan, KR;
Kang Taek Lee, Busan, KR;
Hyung Sik Lim, Busan, KR;
Ki Tae Kim, Busan, KR;
Jeongkwan Co., Ltd, Gyeongsangnam-do, KR;
Abstract
A crystallized glass with negative coefficient of thermal expansion includes 38 wt % to 64 wt % of silica (SiO); 30 wt % to 40 wt % of alumina (AlO); and 5 wt % to 12 wt % of lithium oxide (LiO) as a basic component, and further includes more than one component selected from the group consisting of 0.5 wt % to 15 wt % of zirconia (ZrO), 0.5 wt % to 6.5 wt % of titanium dioxide (TiO), 0.5 wt % to 4 wt % of phosphorus pentoxide (PO), 2 wt % to 5 wt % of magnesium oxide (MgO), and 0 wt % to 5 wt % of magnesium fluoride (MgF) in addition to the basic components. The crystallized glass may have a high negative coefficient of thermal expansion so that it has an advantage that it can be used as a thermal expansion compensation material according to the temperatures of all kinds of glasses and similar products thereof.