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. 12, 2012
Filed:
Nov. 04, 2009
Hiroshige Adachi, Omihachiman, JP;
Hiroshige Adachi, Omihachiman, JP;
Murata Manufacturing Co., Ltd., Nagaokakyo-Shi, Kyoto-fu, JP;
Abstract
A glass ceramic composition is provided which can be fired at a temperature of 1,000° C. or less to form a sintered body having a low relative dielectric constant, a small temperature coefficient of resonant frequency, a small change in capacitance before and after a loading test, a high Qf value, high electrical insulating reliability, and a high flexural strength. A glass ceramic composition forming glass ceramic layers laminated to each other in a multilayer ceramic substrate is also provided. The glass ceramic composition includes a first ceramic powder containing forsterite as a primary component; a second ceramic powder containing SrTiOand/or TiOas a primary component; a third ceramic powder containing BaZrOas a primary component; a fourth ceramic powder containing SrZrOas a primary component; and a borosilicate glass which contains LiO, MgO, BO, SiO, and ZnO, and also which contains at least one of CaO, BaO, and SrO.