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:
Dec. 06, 2011
Filed:
Apr. 10, 2008
Motohiko Sato, Aichi, JP;
Kenji Murakami, Gifu, JP;
Jun Otsuka, Aichi, JP;
Manabu Sato, Aichi, JP;
Masahiko Okuyama, Aichi, JP;
Kozo Yamazaki, Gifu, JP;
Motohiko Sato, Aichi, JP;
Kenji Murakami, Gifu, JP;
Jun Otsuka, Aichi, JP;
Manabu Sato, Aichi, JP;
Masahiko Okuyama, Aichi, JP;
Kozo Yamazaki, Gifu, JP;
NGK Spark Plug Co., Ltd., Nagoya, JP;
Abstract
A capacitor is provided having a tough surface portion which prevents cracking that tends to occur when the capacitor is built-in or surface-mounted on a wiring board. A ceramic sintered body of the capacitor includes a capacitor forming layer portion, a cover layer portion and an interlayer portion. The capacitor forming layer portion has a laminated structure wherein ceramic dielectric layers and inner electrodes connected to a peripheral portion of capacitor via conductors, are alternately laminated. The cover layer portion is exposed at a surface portion of the ceramic body and has a laminated structure wherein ceramic dielectric layers and dummy electrodes not connected to the capacitor via conductors, are alternately laminated.