Process for phosphating electrolytically zinc-coated metals

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United States of America Patent

PATENT NO 4762572
SERIAL NO

06921665

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Abstract

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A method for phosphate coating zinc or nickel-zinc alloy electrolytically coated metal surfaces, in which they are exposed to a phosphating solution containing zinc, manganese, and phosphate ions, and optionally cobalt and/or nitrate ions. The method is conducted at an elevated temperature for up to slightly more than 5 seconds.

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Patent Owner(s)

Patent OwnerAddress
GERHARD COLLARDIN GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG (COLLARDIN GMBH)WIDDERSDORFER STRASSE 215 A CORP OF GERMANY 5000 KOELN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bohnhorst, Detlev Cologne, DE 1 3
Daniel, Caecillie Monheim, DE 1 3
Gottwald, Karl-Heinz Erftstadt, DE 11 61
Mady, Raschad Pulheim, DE 6 42
Morlock, Roland Bergheim, DE 8 64

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