Global Patent Index - EP 1015672 A1

EP 1015672 A1 2000-07-05 - A PROCEDURE FOR ELECTROCHEMICAL POLISHING OF AN ALUMINIUM SUBSTRATE TO OBTAIN CERTAIN TOPOGRAPHICAL PROPERTIES THEREOF

Title (en)

A PROCEDURE FOR ELECTROCHEMICAL POLISHING OF AN ALUMINIUM SUBSTRATE TO OBTAIN CERTAIN TOPOGRAPHICAL PROPERTIES THEREOF

Title (de)

EIN VERFAHREN ZUM ELEKTROCHEMISCHEN POLIEREN EINES ALUMINIUMSUBSTRATES ZUM ERREICHEN BESTIMMTER TOPOGRAPHISCHEN EIGENSCHAFTEN

Title (fr)

TECHNIQUE DE POLISSAGE D'UN SUBSTRAT EN ALUMINIUM AUX FINS DE L'OBTENTION DE CERTAINES CARACTERISTIQUES TOPOGRAPHIQUES

Publication

EP 1015672 A1 (EN)

Application

EP 98943118 A

Priority

  • NO 9800261 W
  • NO 974172 A

Abstract (en)

[origin: WO9913133A1] The present invention concerns the removal/reduction of the directionality or anisotropy of a surface and the formation of certain topographical properties of the same on a substrate material consisting of aluminium or an aluminium alloy. The procedure comprises the following process stages: chemical etching, preferably using phosphoric acid, and electrochemical polishing, preferably using phosphoric acid. The present invention has made it possible to produce surfaces with good optical qualities on substrate materials of inexpensive Al alloys which may contain recycled aluminium.

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

C25F 3/20; C23F 17/00

IPC 8 full level (invention and additional information)

C23F 3/03 (2006.01); C25F 3/20 (2006.01)

CPC (invention and additional information)

C25F 3/20 (2013.01); C23F 3/03 (2013.01)

Citation (search report)

See references of WO 9913133A1

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

WO 9913133 A1 19990318; AU 9098198 A 19990329; EP 1015672 A1 20000705; NO 318028 B1 20050124; NO 974172 A 19990310; NO 974172 D0 19970909

INPADOC legal status


2006-03-29 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20050920

2003-05-14 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: NORSK HYDRO ASA

2003-05-14 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: GLAMOX ASA

2002-06-12 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020425

2000-07-05 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000410

2000-07-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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