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. 12, 2020
Filed:
Dec. 19, 2018
Applicant:
Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu, JP;
Inventors:
Takeshi Koga, Nagaokakyo, JP;
Teppei Akiyoshi, Nagaokakyo, JP;
Masayuki Ishihara, Nagaokakyo, JP;
Katsuhiko Hara, Nagaokakyo, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01G 4/30 (2006.01); H01G 4/12 (2006.01); C04B 35/468 (2006.01); H01B 3/12 (2006.01); C04B 35/49 (2006.01); C04B 35/47 (2006.01); C04B 35/486 (2006.01);
U.S. Cl.
CPC ...
H01G 4/1236 (2013.01); C04B 35/468 (2013.01); C04B 35/4682 (2013.01); C04B 35/47 (2013.01); C04B 35/486 (2013.01); C04B 35/49 (2013.01); H01B 3/12 (2013.01); H01G 4/30 (2013.01); C04B 2235/3208 (2013.01); C04B 2235/3215 (2013.01); C04B 2235/3262 (2013.01); C04B 2235/768 (2013.01);
Abstract
A multilayer ceramic capacitor includes dielectric layers and internal electrode layers provided on the dielectric layers. The dielectric layers each include a perovskite compound that includes Ca and Zr, and optionally Sr and Ti. Mn is disposed at an interface between one of the dielectric layers and one of the internal electrode layers, and a Mn/Zr molar ratio at the interface is not less than about 0.117.