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(11)

EP 2 504 475 A1

(12)

(43) Date of publication: 03.10.2012 Bulletin 2012/40 (21) Application number: 09803930.8 (22) Date of filing: 07.12.2009

(51) International Patent Classification (IPC):  D04H 1/46(2012.01) D04H 18/00(2012.01) G10K 11/162(2006.01) D04H 13/00(2006.01) E04B 1/82(2006.01) (86) International application number: PCT/PT2009/000066 (87) International publication number: WO 2011/065851 (03.06.2011 Gazette 2011/22)

(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 MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 27.11.2009 PT 09104843 (71) Applicant: Universidade do Minho 4700-320 Braga (PT)	(72) Inventors: ESTEVES SOUSA FANGUEIRO, Raul Manuel P-4700-320 Braga (PT) CUNHA SOUTINHO, Hélder Filipe P-4700-320 Braga (PT) (74) Representative: Rüger, Barthelt & Abel  Webergasse 3 73728 Esslingen 73728 Esslingen (DE)