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You can use Global Patent Index (GPI) to carry out detailed searches in the EPO's worldwide bibliographic (DOCDB), legal event (INPADOC) and full-text data sets, and download or visualise the search results for statistical analysis.

Current content: 157 484 516 patent documents

This week's update (26/07/2024 12:00 CET):

147 225 new documents added

921 612 documents amended

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EP 0162875 B1 19890215 - CORROSION INHIBITORS FOR ALUMINIUM

Title (en)

CORROSION INHIBITORS FOR ALUMINIUM

Publication

EP 0162875 B1 19890215 (DE)

Application

EP 84904122 A 19841102

Priority

DE 3341152 A 19831114

Abstract (en)

[origin: WO8502207A1] 3-amino-5-alkyl-1,2,4 triazols in combination with aminotrimethylenephosphonic acid are used as corrosion inhibitors for aluminium in aqueous acid reaction systems.

IPC 1-7

C23F 11/04

IPC 8 full level

C23F 11/04 (2006.01)

CPC (source: EP US)

C23F 11/04 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE CH DE FR GB LI LU NL SE

DOCDB simple family (publication)

WO 8502207 A1 19850523; DE 3341152 A1 19850523; DE 3476774 D1 19890323; EP 0162875 A1 19851204; EP 0162875 B1 19890215; JP S61500447 A 19860313; US 4647429 A 19870303

DOCDB simple family (application)

EP 8400347 W 19841102; DE 3341152 A 19831114; DE 3476774 T 19841102; EP 84904122 A 19841102; JP 50435284 A 19841102; US 75783985 A 19850711