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:
Apr. 08, 2003
Filed:
Oct. 09, 2001
Applicant:
Inventors:
Ei Uchida, Kobe, JP;
Takashi Okada, Kobe, JP;
Assignee:
Ishihara Chemical Co., LTD, Kobe, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D 3/62 ; C25D 3/60 ; C23C 1/800 ;
U.S. Cl.
CPC ...
C25D 3/62 ; C25D 3/60 ; C23C 1/800 ;
Abstract
The present invention provides a non-cyanide-type gold-tin alloy plating bath comprising: (i) at least one water-soluble gold compound, (ii) at least one completing agent for gold, (iii) at least one water-soluble tin compound, and (iv) at least one component selected from the group consisting of cationic macromolecular surfactants and cationic macromolecular compounds. By using the non-cyanide-type gold-tin alloy plating bath of the present invention, a gold-tin alloy plating film having good brightness, reflow properties and the like can be formed.