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:
Oct. 31, 2000
Filed:
Apr. 09, 1999
Applicant:
Inventors:
Hidekiyo Takaoka, Shiga-ken, JP;
Kiyotaka Maegawa, Hikone, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; C22C / ;
U.S. Cl.
CPC ...
428646 ; 174263 ; 257772 ; 420560 ; 420561 ; 420562 ; 428644 ; 428647 ; 428648 ;
Abstract
A lead-free solder contains nickel, silver and tin. A soldered article is a workpiece containing a transition metal conductor capable of readily diffusing into melted tin; and the lead-free solder; wherein the lead-free solder is applied and bonded to the workpiece so as to be electrically and mechanically bonded to the transition metal conductor. The lead-free solder and soldered article barely cause electrode erosion during soldering or during aging after soldering, and have high tensile strength and thermal impact resistance.