(19)

(11)

EP 4 221 981 A1

(12)

(43) Date of publication: 09.08.2023 Bulletin 2023/32 (21) Application number: 21836538.5 (22) Date of filing: 15.12.2021

(51) International Patent Classification (IPC):  B33Y 40/00(2020.01) B33Y 40/20(2020.01) B33Y 40/10(2020.01) B33Y 70/00(2020.01) (52) Cooperative Patent Classification (CPC): B33Y 40/00; B33Y 70/00; B22F 10/73; B22F 9/082; C22C 33/0285; C22C 1/0433; Y02P 10/25; C22C 38/44; C22C 38/02; C22C 38/04; C22C 38/001; C22C 38/42; C22C 19/055; C22C 19/056 (86) International application number: PCT/EP2021/085840 (87) International publication number: WO 2022/194413 (22.09.2022 Gazette 2022/38)

(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: 18.03.2021 IT 202100006527 (71) Applicant: F3Nice S.r.l. 20129 Milano (MI) (IT)	(72) Inventor: VANAZZI, Matteo 26020 AGNADELLO (CREMONA) (IT) (74) Representative: Gregorj S.r.l.  Via L. Muratori, 13/b 20135 Milano 20135 Milano (IT)