Flexible color adjustment for dark Cr(III) platings

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 10988854
APP PUB NO 20200141022A1
SERIAL NO

16709101

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Abstract

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The invention relates to a method for the adjustment of the lightness L* of electrolytically deposited chromium-finishes on workpieces obtained by an electroplating bath comprising at least chromium(III)-ions and sulfur containing organic compounds, wherein the concentration of the sulfur containing organic compounds in the bath are adjusted by passing at least part of the bath composition through an activated carbon filter. Furthermore, the invention is directed to dark chrome coatings comprising a defined concentration gradient of deposited sulfur containing organic compounds.

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Patent Owner(s)

  • MACDERMID ENTHONE INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Konigshofen, Andreas Leverkusen, DE 11 19
Winkler, Maik Leipzig, DE 2 1

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