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:
Jun. 21, 1994
Filed:
Feb. 22, 1993
Applicant:
Inventors:
Nenad V Mandich, Homewood, IL (US);
Gerald A Krulik, El Toro, CA (US);
Rajwant Singh, Fullerton, CA (US);
Assignee:
Applied Electroless Concepts, Lake Forest, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ; B05D / ; B32B / ;
U.S. Cl.
CPC ...
106-123 ; 106-126 ; 427437 ; 428680 ;
Abstract
An electroless silver plating solution comprises a silver(I) complex, a thiosulfate salt, and a sulfite salt. This electroless silver plating solution uses a novel reducing agent combination of thiosulfate and sulfite. It shows a plating rate and a plating solution stability far superior to those of conventional silver plating solutions containing formaldehyde, reducing sugars, borohydride, hydrazine, and other reducing agents.