(19)

(11)

EP 1 831 122 A1

(12)

(43) Date of publication: 12.09.2007 Bulletin 2007/37 (21) Application number: 05822283.7 (22) Date of filing: 02.12.2005

(51) International Patent Classification (IPC):  C03C 11/00(2006.01) E04B 1/80(2006.01) C03C 17/00(2006.01) (86) International application number: PCT/IB2005/054013 (87) International publication number: WO 2006/059306 (08.06.2006 Gazette 2006/23)

(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: 02.12.2004 IT TO20040853 (71) Applicant: POLITECNICO DI TORINO 10129 Torino (IT)	(72) Inventors: SMEACETTO, Federico I-10020 Baldissero Torinese-Rivo Dora (IT) VENTRELLA, Andrea I-21056 Induno Olona (IT) FERRARIS, Monica I-10134 Torino (IT) SAPONARO, Claudio I-10126 Torino (IT) SALVO, Milena I-10133 Tornio (IT) (74) Representative: Comoglio, Elena et al Jacobacci & Partners S.p.A Corso Emilia, 8 10152 Torino 10152 Torino (IT)