(19)

(11)

EP 2 171 367 A1

(12)

(43) Date of publication: 07.04.2010 Bulletin 2010/14 (21) Application number: 08768175.5 (22) Date of filing: 06.06.2008

(51) International Patent Classification (IPC):  F24J 2/07(2006.01) F24J 2/48(2006.01) (86) International application number: PCT/US2008/007098 (87) International publication number: WO 2008/153922 (18.12.2008 Gazette 2008/51)

(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: 06.06.2007 US 933620 P (71) Applicant: Ausra, Inc. Mountain View, CA 94043 (US)	(72) Inventors: MILLS, David, R. Palo Alto, CA 94301 (US) LE LIEVRE, Peter, K. Palo Alto, CA 94301 (US) (74) Representative: Jackson, Richard Eric  Carpmaels & Ransford 43-45 Bloomsbury Square London WC1A 2RA London WC1A 2RA (GB)