(19)

(11)

EP 3 856 419 A1

(12)

(43) Date of publication: 04.08.2021 Bulletin 2021/31 (21) Application number: 19866177.9 (22) Date of filing: 26.09.2019

(51) International Patent Classification (IPC):  B05B 5/00(2006.01) B05B 7/00(2006.01) B05B 7/18(2006.01) B05B 5/025(2006.01) B05B 7/16(2006.01) (86) International application number: PCT/US2019/053176 (87) International publication number: WO 2020/069145 (02.04.2020 Gazette 2020/14)

(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: 28.09.2018 US 201862738071 P (71) Applicant: Western New England University Springfield, Massachusetts 01119 (US)	(72) Inventors: ZHAO, Jingzhou Longmeadow, Massachusetts 01028 (US) MARTEL, Max Aaron Fairfield, Connecticut 06825 (US) GULAK, Yuri Andrew Woodbury, Connecticut 06798 (US) (74) Representative: Linage González, Rafael  Jacobacci & Partners, S.L. Génova, 15 - 1° 28004 Madrid 28004 Madrid (ES)