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:
Jan. 28, 1997
Filed:
Apr. 19, 1995
Korea Institute of Science and Technology, Seoul, KR;
Abstract
A dielectric ceramic composition having an empirical formula represented by (Sr.sub.l-2x Bi.sub.x Ti.sub.l-y W.sub.y)O.sub.3 wherein x is in a range of 0.0005 to 0.003 and y is in a range of 0.0015 to 0.009 for boundary layer condensers and a method for preparing the same which are comprising the steps of: mixing Bi.sub.2 O.sub.3 -WO.sub.3 frit powder with main component having an empirical formula represented by Sr.sub.l-2x Ti.sub.l-y O.sub.3 wherein x is in a range of 0.0005 to 0.003 and y is in a range of 0.0015 to 0.009, in a wet manner, the Bi.sub.2 O.sub.3 frit serving as a reducing agent; drying the resulting mixture; sintering the dried mixture at a temperature of 1,400 to 1,470.degree. C under a reducing atmosphere; and applying secondary thermal treatment to the sintered body at 1,250.degree. C are disclosed.