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. 29, 2009
Filed:
Jun. 15, 2006
Kikuo Sakurai, Gifu, JP;
Yasuhiro Takagi, Aichi, JP;
Kuniharu Tanaka, Komaki, JP;
Masahito Suzuki, Seki, JP;
Kikuo Sakurai, Gifu, JP;
Yasuhiro Takagi, Aichi, JP;
Kuniharu Tanaka, Komaki, JP;
Masahito Suzuki, Seki, JP;
NGK Spark Plug Co., Ltd., Aichi, JP;
Abstract
A ceramic-metal assembly including: a ceramic base; an electrode pad provided on a surface of the ceramic base; a connection terminal for external electrical connection; and a joining portion which joins the connection terminal to the electrode pad. The electrode pad has a first layer which is in contact with the ceramic base and a second layer which is in contact with the joining portion. The first layer contains 20 to 50 vol % of a ceramic component, and the second layer contains a component of the joining portion.