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:
Feb. 05, 2002
Filed:
Nov. 29, 2000
Kazuhiro Komatsu, Chitose, JP;
Atsuo Nagai, Hirakata, JP;
Keiji Kobayashi, Kawachinagano, JP;
Hideki Kuramitsu, Hirakata, JP;
Abstract
A dielectric ceramic composition of the present invention is a mixture of barium titanate as a main component whose Ba/Ti molar ratio ranging from 1.001 to 1.05 and sub components comprising, at least 0.5 to 5.0 mol of Mg in the form of MgO, 0.1 to 3.0 mol of Dy in the form of Dy O , 0.01 to 0.4 mol of Mn in the form of Mn O , 0.01 to 0.26 mol of V in the form of V O , 0.3 to 3.5 mol of Si in the form of SiO and 0.01 to 3.0 mol of Al in the form of Al O per 100 mol of the barium titanate. Even when external electrodes are made of base metal such as copper or the like, a multilayer capacitor whose dielectric layers are not reduced and have high insulation resistance can be obtained by using the dielectric ceramic composition of the present invention.