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. 18, 1991
Filed:
Sep. 07, 1988
Applicant:
Inventor:
Egon Hubel, Feucht, DE;
Assignee:
Schering Aktiengesellschaft, Berlin and Bergkamen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ;
U.S. Cl.
CPC ...
204-111 ; 204228 ;
Abstract
A method for compensating variations of branch currents in an electrolytic bath and hence for improving the uniformity of metal layers deposited on articles, provides a compensating passive resistor having a resistance value exceeding the resistance of respective electroplating branch circuits, in series with each branch circuit. The total electroplating current is adjusted to the nominal branch currents whereby the magnitudes of the latter is determined predominantly by the compensating passive resistors.