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:
Aug. 19, 2003
Filed:
Sep. 22, 2000
Applicant:
Inventors:
Kiyotaka Tsuji, Kobe, JP;
Keigo Obata, Akashi, JP;
Takao Takeuchi, Akashi, JP;
Hidemi Nawafune, Takatsuki, JP;
Tetsuji Nishikawa, Kobe, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D 3/58 ;
U.S. Cl.
CPC ...
C25D 3/58 ;
Abstract
The present invention provides a tin-copper alloy plating bath, tin-copper-bismuth alloy plating bath or tin-copper-silver alloy plating bath containing a soluble metal compound and a specific sulfur-containing compound. The plating bath of the present invention is an alloy plating bath containing tin and copper, the bath being capable of preventing deposition of copper on a tin anode by substitution, having low dependence of plated coating composition on current density, high bath stability and resistance to turbidness.