Patent · US Active

Method and composition for selective anodization

US12065753B2 · kind B2 · utility

0Cited by

0References

20Claims

0Family size

Assignee

Aalberts Surface Technologies GmbH · DE

Inventors

Andre Egli · Emmen, CH
Georg Andersohn · Ranstadt, DE
Julia Dukwen · Erkelenz, DE
Frédéric Cours · Porcelette, FR

Key dates

Filing date	Dec 6, 2022
Grant date	Aug 20, 2024
Priority date	—
Expiry date	Dec 6, 2042

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC25D11/10
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A composition for selective anodization, comprising the substances amidosulphuric acid, magnesium sulphate and concentrated sulphuric acid as a base electrolyte and additionally sodium stannate and/or molybdenum oxide. A corresponding method of selectively anodizing a substrate or workpiece includes providing a substrate having a surface which is to be selectively coated, where the substrate is arranged in a tool and forms a coating cell, selectively bathing the surface with the composition for selective anodization, and applying an electric current between substrate (anode) and tool (cathode) for selective anodization of the surface.

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