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:
Mar. 06, 2001
Filed:
Sep. 17, 1997
Applicant:
Inventors:
Klaus Arlt, Senden, DE;
Karin Eckert, Steinfurt, DE;
Margaret Stockbrink, Münster, DE;
Rolf Schulte, Havixbeck, DE;
Harald Berlin, Nottuln, DE;
Gerd Nienhaus, Münster, DE;
Assignee:
BASF Coatings AG, Muenster-Hiltrup, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25D 1/318 ;
U.S. Cl.
CPC ...
C25D 1/318 ;
Abstract
The present invention relates to a novel process for coating objects by means of direct current, in which process an adjustable DC voltage is pulse-modulated with an adjustable AC voltage. The process is useful for electrochemical coating of objects with resinous coating material. Preferably, the pulse modulation of the DC voltage is limited to certain time intervals during the coating process and the pulse modulation is connected and disconnected with an adjustable duty ratio.