Global Patent Index - EP 2177647 A1

EP 2177647 A1 20100421 - Method of forming multicolor aluminium alloy

Title (en)

Method of forming multicolor aluminium alloy

Title (de)

Verfahren zum Bilden einer mehrfarbigen Aluminiumlegierung

Title (fr)

Procédé de formation d'alliage en aluminium multi-couleur

Publication

EP 2177647 A1 20100421 (EN)

Application

EP 09168633 A 20090825

Priority

TW 97140159 A 20081020

Abstract (en)

A method for forming multicolor aluminum alloy part has steps of preparing, surface treating, forming, processing and reprocessing. Preparing comprises providing an aluminum alloy substrate and cleaning with water. Surface treating comprises disposing the substrate in a first electrolytic solution to form a base oxide layer by anodizing. Forming comprises applying a membrane of transparent, acid-proof, insulating plastic on the substrate. Processing has locally removing an area of the membrane and corresponding oxide layer from the substrate and cleaning. Reprocessing has disposing the clean substrate in a subsequent electrolytic solution to form a subsequent oxide layer by anodizing on areas of the substrate exposed by local removal of an area of the membrane.

IPC 8 full level

C25D 11/04 (2006.01); C25D 11/12 (2006.01); C25D 11/14 (2006.01)

CPC (source: EP US)

C25D 11/022 (2013.01 - EP US); C25D 11/04 (2013.01 - EP); C25D 11/12 (2013.01 - EP); C25D 11/14 (2013.01 - EP)

Citation (search report)

Designated contracting state (EPC)

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 SE SI SK SM TR

Designated extension state (EPC)

AL BA RS

DOCDB simple family (publication)

EP 2177647 A1 20100421; EP 2177647 B1 20110323; AT E503042 T1 20110415; DE 602009000954 D1 20110505; TW 201016891 A 20100501; TW I338056 B 20110301

DOCDB simple family (application)

EP 09168633 A 20090825; AT 09168633 T 20090825; DE 602009000954 T 20090825; TW 97140159 A 20081020