Global Patent Index - EP 0802267 B1

EP 0802267 B1 2000-01-05 - Aluminium surfaces with interference colours

Title (en)

Aluminium surfaces with interference colours

Title (de)

Aluminiumoberfläche mit Interferenzfarben

Title (fr)

Surfaces d'aluminium avec des couleurs d'interférence

Publication

EP 0802267 B1 (DE)

Application

EP 96810245 A

Priority

EP 96810245 A

Abstract (en)

[origin: EP0802267A1] Interference layer contains an aluminium oxide layer and a partially transparent layer deposited on it. The novelty is that the aluminium oxide layer is an anodically produced, transparent and pore-free barrier layer with a thickness of according to the required surface colouring of the interference layer. The thickness d is 20-900 nm, and the partially transparent layer has a wavelength dependent transmission t( lambda )) which is 0.1-1. Production of the interference layer is also claimed.

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

C25D 11/18

IPC 8 full level (invention and additional information)

C25D 11/04 (2006.01); C25D 11/18 (2006.01)

CPC (invention and additional information)

C25D 11/04 (2013.01); C25D 11/18 (2013.01); Y10T 428/31678 (2015.04)

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB IT LI NL PT SE

DOCDB simple family

EP 0802267 A1 19971022; EP 0802267 B1 20000105; AT 188517 T 20000115; CA 2202603 A1 19971018; CA 2202603 C 20040817; DE 59604113 D1 20000210; DK 0802267 T3 20000626; ES 2141460 T3 20000316; PT 802267 E 20000428; US 5904989 A 19990518