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. 20, 2012
Filed:
Apr. 06, 2007
Takayuki Tsuji, Hitachi, JP;
Hiroshi Yamanobe, Hitachi, JP;
Hajime Nishi, Hitachi, JP;
Takeshi Usami, Hitachi, JP;
Seigi Aoyama, Kitaibaraki, JP;
Masato Ito, Hitachi, JP;
Hiroshi Okikawa, Hitachi, JP;
Takayuki Tsuji, Hitachi, JP;
Hiroshi Yamanobe, Hitachi, JP;
Hajime Nishi, Hitachi, JP;
Takeshi Usami, Hitachi, JP;
Seigi Aoyama, Kitaibaraki, JP;
Masato Ito, Hitachi, JP;
Hiroshi Okikawa, Hitachi, JP;
Hitachi Cable, Ltd., Tokyo, JP;
Abstract
A Pb-free Sn-based material part of a wiring conductor is provided at least at a part of its surface, and the Sn-based material part includes a base metal doped with an oxidation control element. The oxidation control element is at least one element selected from a group consisted of P, Ge, K, Zn, Cr, Mn, Na, V, Si, Ti, Al, Li, Mg and Ca. The wiring conductor is reflow processed, such that at least one of the Sn and the oxidation control element is diffused to form an alloy.