(19)

(11)

EP 3 847 317 A1

(12)

(43) Date of publication: 14.07.2021 Bulletin 2021/28 (21) Application number: 19857891.6 (22) Date of filing: 03.09.2019

(51) International Patent Classification (IPC):  E04B 1/00(2006.01) E04B 1/66(2006.01) E04B 9/00(2006.01) E04B 1/62(2006.01) E04B 5/00(2006.01) E04C 2/20(2006.01) (86) International application number: PCT/US2019/049319 (87) International publication number: WO 2020/051126 (12.03.2020 Gazette 2020/11)

(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: 04.09.2018 US 201862726627 P (71) Applicant: Cortex Composites, Inc. Pacific Palisades, California 90272 (US)	(72) Inventors: KRASNOFF, Curren E. Pacific Palisades, California 90272 (US) MAENO, Antonin Yuji 75014 Paris (FR) (74) Representative: Groth & Co. KB  P.O. Box 6107 102 32 Stockholm 102 32 Stockholm (SE)