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:
Jan. 11, 1994
Filed:
Jul. 10, 1992
Applicant:
Inventor:
Ronald J Morrissey, Cranston, RI (US);
Assignee:
Technic Incorporated, Cranston, RI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
205248 ; 205247 ; 205250 ; 205266 ; 205267 ; 106-126 ; 106-113 ;
Abstract
Disclosed are cyanide free electroplating solutions for gold or alloys thereof; said solutions comprising gold in the form of a soluble sulfite complex, an added source of sulfite and/or bisulfite ion and a supporting electrolyte; and said solutions further comprising both an organic polyamine or mixture of polyamines of molecular weight from about 60 to 50,000, and an aromatic organic nitro compound; wherein the pH of said solutions is below about 6.5.