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EP 2 176 447 A1

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(43) Date of publication: 21.04.2010 Bulletin 2010/16 (21) Application number: 08758242.5 (22) Date of filing: 20.06.2008

(51) International Patent Classification (IPC):  C25D 3/60(2006.01) C25D 7/10(2006.01) C22F 1/00(2006.01) C23F 1/28(2006.01) C25D 5/48(2006.01) C21D 7/04(2006.01) C22F 1/08(2006.01) (86) International application number: PCT/DK2008/000233 (87) International publication number: WO 2008/154925 (24.12.2008 Gazette 2008/52)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (30) Priority: 21.06.2007 US 929299 P 22.06.2007 EP 07388045 (71) Applicant: Danmarks Tekniske Universitet - DTU 2800 Kongens Lyngby (DK)

(72) Inventors: TANG, Peter, Torben DK-2860 Søborg (DK) ARENTOFT, Mogens DK-4000 Roskilde (DK) BAY, Niels DK-2765 Smørum (DK) BORRILD, Morten, Jerne DK-2100 Copenhagen (DK) MIZUSHIMA, Io DK-2800 Kongens Lyngby (DK) JENSEN, Jørgen, Dai DK-1754 Copenhagen V (DK) PALDAN, Nikolas, Aulin DK-2920 Charlottenlund (DK) (74) Representative: Bender, Mikkel  Chas. Hude A/S H.C. Andersens Boulevard 33 DK-1780 Copenhagen V DK-1780 Copenhagen V (DK)