(19)

(11)

EP 2 232 584 A1

(12)

(43) Date of publication: 29.09.2010 Bulletin 2010/39 (21) Application number: 07856605.6 (22) Date of filing: 12.12.2007

(51) International Patent Classification (IPC):  H01L 31/048(2006.01) (86) International application number: PCT/EP2007/010857 (87) International publication number: WO 2009/074167 (18.06.2009 Gazette 2009/25)

(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 (71) Applicant: Ruiz Caballero, Francisco Eugenio Salazar, 23 28002 Madrid (ES)	(72) Inventor: Ruiz Caballero, Francisco Eugenio Salazar, 23 28002 Madrid (ES) (74) Representative: Mato Adrover, Ángel Luis  Protectia Patentes y Marcas Calle Caleruega 12, 1°C 28033 Madrid 28033 Madrid (ES)