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:
Mar. 31, 2020
Filed:
Sep. 18, 2018
Taiyo Yuden Co., Ltd., Chuo-ku, Tokyo, JP;
Kenji Takashima, Takasaki, JP;
TAIYO YUDEN CO., LTD., Tokyo, JP;
Abstract
A ceramic electronic device includes: a ceramic main body that has at least two edge faces facing each other, has an internal electrode layer inside thereof and has a parallelepiped shape; and external electrodes formed on the two edge faces, wherein: the external electrodes have at least a plated layer; an oxide film of a metal for plating of the plated layer on a region that is a part of at least one of four side faces of the ceramic main body other than the two edge faces, the region not being covered with the external electrodes; and a ratio of (a peak area of an oxide of the metal for plating)/(a peak area of the metal for plating) is 13.1 or more in a photoelectron spectrum of an outermost surface of the oxide film.