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:
Aug. 21, 2012
Filed:
Dec. 23, 2009
Shoichiro Suzuki, Yasu, JP;
Toshikazu Takeda, Omihachiman, JP;
Shoichiro Suzuki, Yasu, JP;
Toshikazu Takeda, Omihachiman, JP;
Murata Manufacturing Co., Ltd., Nagaokakyo-Shi, Kyoto-fu, JP;
Abstract
A dielectric ceramic for use in dielectric ceramic layers has a main component represented by a composition formula of (SrSnBa)TiO, wherein x is 0.005≦x≦0.24, y is 0≦y≦0.25 in the composition formula. Preferably, the dielectric ceramic includes 0.01 mol to 5 mol of M (M is at least one of Mn and V) calculated as MO and/or 0.2 mol to 5 mol of Si calculated as SiO, with respect to 100 mols of the main component, and more preferably, further includes 0.1 mol to 25 mol of Ca calculated as CaO with respect to 100 mols of the main component. The dielectric ceramic has an increased dielectric constant permitting size reduction when used in a laminated ceramic capacitor.