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. 11, 1995
Filed:
Jan. 03, 1994
Korea Institute of Science and Technology, Seoul, KR;
Abstract
A low loss dielectric ceramic composition is disclosed, which is usable in a microwave filter and global positioning that is superior in quality coefficient (Q) value, temperature characteristics of resonant frequency, and long-term reliability, such as high temperature resistance and humidity resistance. The composition comprises Zr.sub.1-x Sn.sub.x Ti.sub.1+y O.sub.4 as a main group in combination with aZnO+bSb.sub.2 O.sub.3, as sintering-aiding agents, wherein x and y are mole ratios which satisfy the following conditions: 0.1<x<0.3; 0<y<0.5; and a and b indicate weight ratios to the total weight of the main group, satisfied by the following condition: 0<a+b<0.05 wherein neither a nor b is zero.