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. 16, 1985
Filed:
Jan. 16, 1980
Applicant:
Inventors:
Alfred P Orio, Westford, MA (US);
Leonard R Levy, Framingham, MA (US);
Michael Gulla, Sherborn, MA (US);
Assignee:
Shipley Company Inc., Newton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
106-122 ; 106-125 ;
Abstract
This invention is for an immersion tin plating composition capable of depositing tin over metallic surfaces displaceable by tin and to processes using the same. The composition is characterized by an inhibitor that improves the plating characteristics of the solution and permits an increased ratio of thiourea to tin at a relatively high tin concentration without formation of 'black tin'. The tin plating compositions of this invention are capable of providing an increased yield of good quality tin compared to prior art tin plating compositions.