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. 16, 2001
Filed:
May. 25, 1999
Yukiko Furukawa, Yamato, JP;
Hitoshi Masumura, Tokyo, JP;
U.S. Philips Corporation, New York, NY (US);
Abstract
An object of the present invention is to provide a dielectric ceramic composition in which a volume changing ratio of the electrostatic capacity is within ±0.3% over a wide temperature range of −55 to +125° C., it satisfies the NPO characteristics regulated by EIA standard, the dielectric constant is high as 75 or more and the Q value of 2000 or higher and it is capable of subjecting to sintering at a low temperature of 1100 to 1150° C. The dielectric ceramic composition of the present invention is a (Ba Ca Sr Nd Gd)TiO,series composition and to the composition was added and contained 1.0 to 5.0% by weight of ZnSiTiO,, 1.0 to 5.0% by weight of ZnSi,TiO,or 1.0 to 5.0% by weight of CaSiTiO,based on the weight of the composition.