(19)

(11)

EP 3 965 965 A1

(12)

(43) Date of publication: 16.03.2022 Bulletin 2022/11 (21) Application number: 20722214.2 (22) Date of filing: 06.05.2020

(51) International Patent Classification (IPC):  B09B 3/00(2022.01) C12M 1/00(2006.01) (52) Cooperative Patent Classification (CPC): Y02E 50/30; B09B 3/45; B09B 3/40 (86) International application number: PCT/IB2020/054290 (87) International publication number: WO 2020/225748 (12.11.2020 Gazette 2020/46)

(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: 06.05.2019 IT 201900006578 (71) Applicant: TPA Srl 10128 Torino (IT)	(72) Inventors: GIORGI, Nazareno 10128 Torino (IT) SANASI, Lucio 10128 Torino (IT) (74) Representative: Robba, Pierpaolo  Interpatent S.R.L. Via Caboto, 35 10129 Torino 10129 Torino (IT)