(19)

(11)

EP 4 058 745 A1

(12)

(43) Date of publication: 21.09.2022 Bulletin 2022/38 (21) Application number: 20817507.5 (22) Date of filing: 30.11.2020

(51) International Patent Classification (IPC):  F27B 1/10(2006.01) C21B 13/02(2006.01) C21B 13/00(2006.01) F27D 1/00(2006.01) (52) Cooperative Patent Classification (CPC): F27B 1/10; C21B 13/023; F27D 2001/0059; C21B 13/0026; C21B 13/0073; C21C 2100/04; C21C 2100/06; C21C 2100/02; Y02P 10/20; Y02P 10/122; Y02P 10/134 (86) International application number: PCT/IB2020/061279 (87) International publication number: WO 2021/105968 (03.06.2021 Gazette 2021/22)

(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: 29.11.2019 IT 201900022587 (71) Applicant: Galbiati, Cristiano Carloforte (SU) (IT)	(72) Inventor: Galbiati, Cristiano Carloforte (SU) (IT) (74) Representative: Sach, Greg Robert  STERAF S.r.l. Corso di Porta Romana 132 20122 Milan 20122 Milan (IT)