(19)

(11)

EP 2 067 235 A2

(12)

(88) Date of publication A3: 12.06.2008 (43) Date of publication: 10.06.2009 Bulletin 2009/24 (21) Application number: 07837873.4 (22) Date of filing: 07.09.2007

(51) International Patent Classification (IPC):  H02J 9/02(2006.01) (86) International application number: PCT/US2007/019519 (87) International publication number: WO 2008/039293 (03.04.2008 Gazette 2008/14)

(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 MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 30.09.2006 US 537637 (71) Applicant: OSRAM-SYLVANIA INC. Danvers, MA 01923 (US)	(72) Inventors: CHOUDHURY, Arjun, K. Gurgaon, Haryana 122001 (IN) SHARATH, Bangalore Gurgaon, Haryana PIN-122002 (IN) (74) Representative: Raiser, Franz  Osram GmbH Postfach 22 16 34 80506 München 80506 München (DE)