Global patent index - EP 1085111 A1

EP 1085111 A1 2001-03-21 - A replenishment process for metal electrodeposition baths

Title (en)

A replenishment process for metal electrodeposition baths

Title (de)

Verfahren zum Auffrischen eines Metall-Elektroplattierungsbades

Title (fr)

Procédé de régénération des bains d'électrodéposition métallique

Publication

EP 1085111 A1 (EN)

Application

EP 99117902 A

Priority

EP 99117902 A

Abstract (en)

In a process of replenishing the concentration of a metal cation in an electrolyte solution in an electroplating process, the electrolyte is circulated from a working bath (2) to an enrichment bath in an enrichment cell (11) in which metal anodes (1a; 1b) are dissolved to increase the concentration of metal cations; metal deposition at the cathode of the enrichment cell is reduced or substantially avoided by carrying out cathodic reduction reactions that produce or consume a gas, and without using ion chemical separation means located between anode and cathode (1a,3a; 1b,3b) of the enrichment cell. <IMAGE>

IPC 1-7 (main, further and additional classification)

C25D 21/14

IPC 8 full level (invention and additional information)

C25D 21/14 (2006.01)

CPC (invention and additional information)

C25D 21/14 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1085111 A1 20010321

INPADOC legal status

2002-10-02 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20010922

2002-08-22 [REG DE 8566] DESIGNATED COUNTRY DE NOT LONGER VALID

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2001-12-12 [AKX] PAYMENT OF DESIGNATION FEES

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2001-03-21 [AK] DESIGNATED CONTRACTING STATES:

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- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-03-21 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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- Free Format Text: AL;LT;LV;MK;RO;SI