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:
Nov. 22, 2011
Filed:
Sep. 26, 2007
Applicant:
Fumitake Taniguchi, Tottori, JP;
Inventor:
Fumitake Taniguchi, Tottori, JP;
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01R 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A ceramic substrate part comprising on its upper surface pluralities of external electrodes comprising wire-bonding electrodes, each of which comprises a primer layer based on Ag or Cu, a Ni-based lower layer, an intermediate layer based on a Pd—P alloy containing 0.4-5% by mass of P, and a Au-based upper layer formed in this order on a ceramic substrate, the upper layer containing Pd after heated by soldering, and having a Au concentration of 80 atomic % or more based on the total concentration (100 atomic %) of Au and Pd.