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. 21, 1989
Filed:
May. 21, 1986
Applicant:
Inventors:
Raymond L Helton, Beaverton, OR (US);
Douglas W Trobough, Beaverton, OR (US);
Marianne McPherson, Portland, OR (US);
Assignee:
Tektronic, Inc., Beaverton, OR (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
204 442 ; 204 553 ; 204123 ;
Abstract
An alkaline, cyanide, aqueous electroplating composition of copper, tin, and zinc includes a small amount of nickel to enhance the inclusion of tin in the copper-tin-zinc plate deposited from the soltion. The plate resists tarnishing by a corrosion test solution, and retains its bright silvery-colored appearance because the plate preferably includes at least about 10.9 atomic wt % tin. The plating method for enhanced tin alloys through nickel additions to the bath is also described.