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. 16, 1994
Filed:
Jul. 23, 1993
Applicant:
Inventors:
Harry H Kroll, E. Greenwich, RI (US);
Jean Chevalier, Cranston, RI (US);
Assignee:
Technic Incorporated, Cranston, RI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
106-123 ; 106-126 ;
Abstract
An electroless catalytic gold plating solution is disclosed comprising a water soluble organic thiol gold (I) complex, an alkali metal cyanide, an alkali metal hydroxide, a borohydride reducing agent, and may also contain a stabilizing agent. The electroless gold plating solution will deposit gold on a gold surface several times faster than the conventional electroless gold baths based on potassium aurous cyanide. The use of an organic thiol gold (I) complex eliminates the buildup of inhibitory cyanide ions as a result of replenishment.