Patent · US Active

Method for passivating metallic substances

US11987887B2 · kind B2 · utility

0Cited by

2References

15Claims

0Family size

Assignee

EWALD DÖRKEN AG · DE

Inventors

Holger Grolmes · Erwitte, DE
Christopher Köster · Herdecke, DE
Ingo Klüppel · Bochum, DE
Marcel Roth · Goldkronach, DE

Key dates

Filing date	Jul 28, 2020
Grant date	May 21, 2024
Priority date	—
Expiry date	Jul 16, 2042

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC25D3/22
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The present invention relates to a method for adjusting a passivation composition by determining the redox potential of a passivation composition as well as to a method for passivating metallic substrates by treatment with a passivation composition.

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