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:
Dec. 04, 2001
Filed:
Jun. 03, 1998
Applicant:
Inventors:
Heinrich Meyer, Berlin, DE;
Lutz Stamp, Berlin, DE;
Assignee:
Atotch Deutschland GmbH, Berlin, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D 5/54 ; C25D 5/34 ; C25D 5/02 ;
U.S. Cl.
CPC ...
C25D 5/54 ; C25D 5/34 ; C25D 5/02 ;
Abstract
The invention relates to a palladium colloid solution, which, in addition to a palladium compound, a protective colloid for stabilizing the colloid and a reducing agent, additionally contains noble metals from the group rhodium, iridium and platinum. The solution can be used to treat electrically non-conductive substrate surfaces, particularly in order to metallize the substrate surfaces directly and electrolytically. By means of this method, the nonconductive areas of the holes in printed circuit boards can be directly electrolytically metallized.