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EP 4 097 058 A1

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(43) Date of publication: 07.12.2022 Bulletin 2022/49 (21) Application number: 21701461.2 (22) Date of filing: 20.01.2021

(51) International Patent Classification (IPC):  C04B 28/06(2006.01) C04B 111/28(2006.01) A62D 1/00(2006.01) (52) Cooperative Patent Classification (CPC): C04B 28/06; C04B 2111/28; C04B 2111/00284; C04B 2111/00431; C04B 2201/20; E04B 1/942; Y02W 30/91   C-Sets: C04B 28/06, C04B 14/12, C04B 18/025, C04B 18/165, C04B 20/0076, C04B 38/10, C04B 40/0028; (86) International application number: PCT/EP2021/051132 (87) International publication number: WO 2021/151747 (05.08.2021 Gazette 2021/31)

(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: 30.01.2020 SE 2050089 (71) Applicant: Conpore Technology AB 856 34 Sundsvall (SE)	(72) Inventors: SVEDMAN, Kjell 841 91 Ånge (SE) ALMQVIST, Björn 831 32 Ånge (SE) (74) Representative: AWA Sweden AB  Box 45086 104 30 Stockholm 104 30 Stockholm (SE)