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. 15, 1998
Filed:
Oct. 04, 1996
Applicant:
Inventors:
Wolfgang Dahms, Berlin, DE;
Horst Westphal, Berlin, DE;
Assignee:
Atotech Deutschland GmbH, Berlin, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
205298 ; 205297 ; 205296 ; 106-126 ;
Abstract
An aqueous acid bath for galvanic precipitation of copper is disclosed. The copper plating composition comprises at least one polymer phenazonium compound and .beta.-naphtholalkoxylate. A method for using such a bath for deposition of copper coatings is also disclosed. The resultant copper coatings are smooth and bright with substantially no fine roughness or pitting.