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:
Apr. 16, 2013
Filed:
Mar. 18, 2011
Takahiro Nakano, Tokyo, JP;
Yasuharu Miyauchi, Tokyo, JP;
Tomoko Nakamura, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A dielectric ceramic includes a main component and a minor component. The main component includes a BaTiOcrystal phase and a BaTiOcrystal phase, is represented by BaO.xTiO, has a molar ratio x of TiOto BaO of 4.6 to 8.0, and in X-ray diffraction, and has an X-ray diffraction peak intensity ratio I/Iof a maximum diffraction peak intensity (I) of the BaTiOcrystal phase to a maximum diffraction peak intensity (I) of the BaTiOcrystal phase of 1 or more. The minor component includes a boron oxide and a copper oxide, in which the boron oxide content is in the range of 0.5 to 5.0 parts by mass with respect to 100 parts by mass of the main component, and the copper oxide content is in the range of 0.1 to 3.0 parts by mass with respect to 100 parts by mass of the main component.