Patent · US Active

Electroplating bath and method for producing dark chromium layers

US10174432B2 · kind B2 · utility

0Cited by

6References

12Claims

0Family size

Assignee

Atotech Deutschland GmbH & Co. KG · DE

Inventors

Klaus Schulz · Berlin, DE
Philipp Wachter · Berlin, DE
Philip Hartmann · Berlin, DE

Key dates

Filing date	Nov 18, 2015
Grant date	Jan 8, 2019
Priority date	—
Expiry date	Apr 29, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC25D3/08
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The invention relates to methods and plating baths for electrodepositing a dark chromium layer on a workpiece. The trivalent chromium electroplating baths comprise sulphur compounds and the methods for electrodepositing a dark chromium layer employ these trivalent chromium electroplating baths. The dark chromium deposits and workpieces carrying dark chromium deposits are suited for application for decorative purposes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.