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:
May. 15, 2012
Filed:
Jul. 31, 2009
Takayuki Yao, Higashiomi, JP;
Takayuki Yao, Higashiomi, JP;
Murata Manufacturing Co., Ltd., Nagaokakyo-Shi, Kyoto-fu, JP;
Abstract
A monolithic ceramic capacitor includes dielectric ceramic layers having a thickness of less than 1 μm. When this thickness is t and the crystal grains of a dielectric ceramic of the layers have a mean diameter of r, a mean number N of grain boundaries satisfies 0<N≦2 where N=t/r−1. The dielectric ceramic contains, as a main component, a perovskite type compound ABO(where A is Ba or Ba and at least one of Ca and Sr, B is Ti or Ti and at least one of Zr and Hf), and further contains Mn and V as auxiliary components. On the basis of 100 molar parts of the main component, the content of Mn is 0.05 to 0.75 molar parts, the content of V is 0.05 to 0.75 molar parts, and the total content of Mn and V is 0.10 to 0.80 molar parts.