(19)

(11)

EP 3 707 309 A1

(12)

(43) Date of publication: 16.09.2020 Bulletin 2020/38 (21) Application number: 18876500.2 (22) Date of filing: 05.11.2018

(51) International Patent Classification (IPC):  E02B 3/12(2006.01) C04B 22/00(2006.01) C04B 24/24(2006.01) (86) International application number: PCT/US2018/059220 (87) International publication number: WO 2019/094335 (16.05.2019 Gazette 2019/20)

(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: 08.11.2017 US 201715806980 08.11.2017 US 201715807373 (71) Applicant: Cortex Composites, Inc. Pacific Palisades, California 90272 (US)	(72) Inventors: KRASNOFF, Curren E. Pacific Palisades, California 90272 (US) BERKE, Neal S. Portage, Michigan 49024 (US) (74) Representative: Groth & Co. KB  P.O. Box 6107 102 32 Stockholm 102 32 Stockholm (SE)