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Current content: 155 263 406 patent documents

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215 613 new documents added

1 342 057 documents amended

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EP 1713955 B1 20130619 - BLACK PASSIVATION OF ZINC OR ZINC ALLOY SURFACES

Title (en)

BLACK PASSIVATION OF ZINC OR ZINC ALLOY SURFACES

Title (de)

SCHWARZPASSIVIERUNG VON ZINK- ODER ZINKLEGIERUNGSOBERFLÄCHEN

Title (fr)

PASSIVATION NOIRE DE SURFACES EN ZINC OU ALLIAGE DE ZINC

Publication

EP 1713955 B1 20130619 (DE)

Application

EP 05700867 A 20050113

Priority

EP 2005000250 W 20050113
DE 102004001945 A 20040114

Abstract (en)

[origin: WO2005068684A1] The invention relates to an aqueous solution which is used to improve black passivation of zinc or zinc alloy surfaces. Said solution is characterised in that it contains inorganic and/or organic sulphur compounds. As a result, protection against corrosion is essentially improved.

IPC 8 full level

C23C 22/34 (2006.01); C23C 22/53 (2006.01); C23C 22/84 (2006.01)

CPC (source: EP)

C23C 22/34 (2013.01); C23C 22/53 (2013.01); C23C 22/84 (2013.01); C23C 2222/10 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

WO 2005068684 A1 20050728; DE 102004001945 A1 20050811; EP 1713955 A1 20061025; EP 1713955 B1 20130619

DOCDB simple family (application)

EP 2005000250 W 20050113; DE 102004001945 A 20040114; EP 05700867 A 20050113