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:
Jul. 06, 2010
Filed:
Feb. 06, 2007
Tomoko Nakamura, Tokyo, JP;
Katsuhiko Igarashi, Tokyo, JP;
Tomoko Nakamura, Tokyo, JP;
Katsuhiko Igarashi, Tokyo, JP;
TDK Corpoation, Tokyo, JP;
Abstract
A multilayer ceramic substrate includes a plurality of stacked glass ceramic layers and internal conductors. The glass ceramic layers contain at least one diffusion element selected from the group consisting of Ti, Zr and Mn. The internal conductors contain Ag as a conductive material. The multilayer ceramic substrate is produced by the steps of adding at least one diffusion element selected from the group consisting of Ti, Zr and Mn to conductive paste and diffusing the diffusion element in the glass ceramic layers around the conductive paste. As a result, defects otherwise possibly generated around the internal conductors can be eliminated with exactitude.