Global Patent Index - EP 4298270 A1

EP 4298270 A1 20240103 - PROCESS FOR GALVANIC ELECTRODEPOSITION AND ASSOCIATED GALVANIC BATH

Title (en)

PROCESS FOR GALVANIC ELECTRODEPOSITION AND ASSOCIATED GALVANIC BATH

Title (de)

VERFAHREN ZUR GALVANISCHEN ABSCHEIDUNG UND ZUGEHÖRIGES GALVANISCHES BAD

Title (fr)

PROCÉDÉ D'ÉLECTRODÉPOSITION GALVANIQUE ET BAIN GALVANIQUE ASSOCIÉ

Publication

EP 4298270 A1 20240103 (EN)

Application

EP 21716861 A 20210223

Priority

IT 2021000006 W 20210223

Abstract (en)

[origin: WO2022180650A1] A galvanic electrodeposition process, comprising a step of coating with a layer of yellow gold alloy at least one object immersed in a galvanic bath which comprises an aqueous solution. The aqueous solution comprises at least: - gold in a quantity comprised between 1 gram and 10 grams per liter of solution, in the form of alkaline cyanide, - copper in a quantity comprised between 30 grams and 70 grams per liter of solution, in the form of an alkaline cyanide compound, - indium in a quantity comprised between 100 milligrams and 2 grams per liter of solution, in the form of a soluble compound, - zinc in a quantity comprised between 100 milligrams and 2 grams per liter of solution, in the form of a soluble compound.

IPC 8 full level

C25D 3/56 (2006.01); C22C 5/02 (2006.01); C25D 1/02 (2006.01); C25D 3/58 (2006.01); C25D 3/62 (2006.01); C25D 7/00 (2006.01)

CPC (source: EP)

C22C 5/02 (2013.01); C25D 1/02 (2013.01); C25D 3/58 (2013.01); C25D 3/62 (2013.01); C25D 7/005 (2013.01)

Citation (examination)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

WO 2022180650 A1 20220901; CN 116917549 A 20231020; EP 4298270 A1 20240103

DOCDB simple family (application)

IT 2021000006 W 20210223; CN 202180093742 A 20210223; EP 21716861 A 20210223