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(11)

EP 4 334 097 A1

(12)

(43) Date of publication: 13.03.2024 Bulletin 2024/11 (21) Application number: 21939944.1 (22) Date of filing: 04.05.2021

(51) International Patent Classification (IPC):  B28B 5/00(2006.01) C04B 37/00(2006.01) B28B 11/24(2006.01) (52) Cooperative Patent Classification (CPC): C04B 33/34; C04B 2235/6021; C04B 35/622; C04B 2237/64; B28B 11/044; B28B 3/20; B28B 11/243; B28B 1/002 (86) International application number: PCT/US2021/030598 (87) International publication number: WO 2022/235257 (10.11.2022 Gazette 2022/45)

(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 (71) Applicant: Shildan, Inc. Mount Laurel, NJ 08054 (US)	(72) Inventor: STEINMETZ, Moshe Mount Laurel, NJ 08054 (US) (74) Representative: Bjerkén Hynell KB  Tulegatan 53 113 53 Stockholm 113 53 Stockholm (SE)