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(11)

EP 3 641 957 A1

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(43) Date of publication: 29.04.2020 Bulletin 2020/18 (21) Application number: 18752624.9 (22) Date of filing: 22.06.2018

(51) International Patent Classification (IPC):  B09B 3/00(2006.01) A47J 31/00(2006.01) B30B 9/00(2006.01) A47J 31/44(2006.01) B09B 5/00(2006.01) B65B 69/00(2006.01) (86) International application number: PCT/IB2018/054618 (87) International publication number: WO 2018/235044 (27.12.2018 Gazette 2018/52)

(84) Designated Contracting States: AL 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 RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 23.06.2017 CH 8252017 (71) Applicant: Ecole Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne (CH)	(72) Inventors: MILAN, Guglielmo 1020 Renens (CH) MASSERA, Luca 28801 Cossogno (VB) (IT) HAOUARI, Alisandro 1131 Tolochenaz (CH) CASTAÑEDA, Fernando 28016 Madrid (ES) (74) Representative: Grosfillier, Philippe  ANDRE ROLAND S.A. P.O. Box 5107 1002 Lausanne 1002 Lausanne (CH)