(19)

(11)

EP 1 977 083 A1

(12)

(43) Date of publication: 08.10.2008 Bulletin 2008/41 (21) Application number: 07703852.9 (22) Date of filing: 15.01.2007

(51) International Patent Classification (IPC):  F01D 5/20(2006.01) (86) International application number: PCT/EP2007/050336 (87) International publication number: WO 2007/080189 (19.07.2007 Gazette 2007/29)

(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: 13.01.2006 US 758763 P (71) Applicant: ETH Zürich 8092 Zürich (CH)	(72) Inventors: MISCHO, Bob CH-8006 Zürich (CH) ABHARI, Reza CH-8127 Forch (CH) BEHR, Thomas CH-8051 Zürich (CH) (74) Representative: Rentsch, Rudolf A.  Rentsch & Partner Fraumünsterstrasse 9 8001 Zürich 8001 Zürich (CH)