(19)

(11)

EP 1 786 942 A1

(12)

(43) Date of publication: 23.05.2007 Bulletin 2007/21 (21) Application number: 05775793.2 (22) Date of filing: 05.09.2005

(51) International Patent Classification (IPC):  C22C 45/10(2006.01) (86) International application number: PCT/CH2005/000525 (87) International publication number: WO 2006/026882 (16.03.2006 Gazette 2006/11)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 06.09.2004 EP 04405550 (71) Applicant: Eidgenössische Technische Hochschule Zürich (ETH) 8092 Zürich (CH)	(72) Inventors: LÖFFLER, Jörg, F. CH-8049 Zürich (CH) JIN, Kaifeng CH-8037 Zürich (CH) (74) Representative: Detken, Andreas et al Isler & Pedrazzini AG Gotthardstrasse 53 Postfach 1772 8027 Zürich 8027 Zürich (CH)