(19)

(11)

EP 3 853 421 A1

(12)

(43) Date of publication: 28.07.2021 Bulletin 2021/30 (21) Application number: 19862243.3 (22) Date of filing: 19.09.2019

(51) International Patent Classification (IPC):  E04B 1/68(2006.01) E01D 19/06(2006.01) E02D 29/16(2006.01) E01C 11/02(2006.01) E02B 3/16(2006.01) E04B 1/66(2006.01) (86) International application number: PCT/US2019/051829 (87) International publication number: WO 2020/061253 (26.03.2020 Gazette 2020/13)

(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: 20.09.2018 US 201862733758 P 20.09.2018 US 201862733756 P (71) Applicant: Tremco Incorporated Beachwood, OH 44122 (US)	(72) Inventors: BIRKELBACH, Joerg 45731 Waltrop (DE) GAGNE, Brian, M. Twinsburg, OH 44122 (US) HAGEN, Robert Harbor Springs, MI 49740 (US) HOUK, Charles Broadview Heights, OH 44147 (US) (74) Representative: FRKelly  27 Clyde Road Dublin D04 F838 Dublin D04 F838 (IE)