Corrosion inhibitors for silver

US5888954A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Juergen Haerer · Goldkronach, DE
• Helmut Blum · Goldkronach, DE
• Birgit Burg · Alpen, DE
• Thomas Holderbaum · Hilden, DE
• Willi Buchmeier · Goldkronach, DE
• Peter Jeschke · Eltville am Rhein, DE
• Horst-Dieter Speckmann · Langenfeld, DE
• Frank Wiechmann · Goldkronach, DE
• Christian Nitsch · Dressendorf, DE

Key dates

• Filing date: Aug 28, 1997
• Grant date: Mar 30, 1999
• Expiry date: Aug 28, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3472
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for inhibiting the corrosion of silver in a dishwashing detergent solution by adding to the solution an inorganic redox-active substance.