(19)

(11)

EP 3 649 266 A1

(12)

(43) Date of publication: 13.05.2020 Bulletin 2020/20 (21) Application number: 18742945.1 (22) Date of filing: 02.07.2018

(51) International Patent Classification (IPC):  C22C 18/00(2006.01) C22F 1/16(2006.01) C22C 18/02(2006.01) (86) International application number: PCT/EP2018/067808 (87) International publication number: WO 2019/007906 (10.01.2019 Gazette 2019/02)

(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: 04.07.2017 EP 17179643 (71) Applicant: Grillo-Werke AG 47169 Duisburg (DE)

(72) Inventors: HÜTTIG, Jan 47169 Duisburg (DE) MELZER, Armin 47169 Duisburg (DE) PRENGER, Frank 47169 Duisburg (DE) ROLLEZ, Didier 47169 Duisburg (DE) VAN WESEL, Markus 47169 Duisburg (DE) VON KRIES, Joanna 47169 Duisburg (DE) WISNIEWSKI, Jürgen 47169 Duisburg (DE) (74) Representative: dompatent von Kreisler Selting Werner - Partnerschaft von Patent- und Rechtsanwälten mbB  Deichmannhaus am Dom Bahnhofsvorplatz 1 50667 Köln 50667 Köln (DE)