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(11)

EP 4 157 806 A1

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(43) Date of publication: 05.04.2023 Bulletin 2023/14 (21) Application number: 20938855.2 (22) Date of filing: 31.05.2020

(51) International Patent Classification (IPC):  C04B 35/571(2006.01) B33Y 80/00(2015.01) B28B 1/00(2006.01) B33Y 70/00(2015.01) C08G 77/50(2006.01) (52) Cooperative Patent Classification (CPC): C08G 77/50; C04B 35/571; B33Y 70/00; C04B 2235/6026; C04B 35/5603; C04B 2235/3826; C04B 2235/5436; C04B 2235/80; C04B 35/589; C04B 2235/3418; C04B 2235/3856; C04B 2235/3873; C04B 2235/36; C04B 2235/3217; C04B 2235/3244; C04B 2235/3232; C04B 2235/3222; C04B 2235/422; C04B 2235/424; C04B 2235/427; C04B 2235/3839; C04B 2235/3843; C04B 2235/3821; C04B 2235/386; C04B 2235/3865; C04B 2235/3886; C04B 35/80; C04B 2235/5224; C04B 2235/5232; C04B 2235/524; C04B 2235/5244; C04B 2235/5248; C04B 35/62873; C04B 35/62865; C04B 35/62868; C04B 2235/77; C04B 2235/762 (86) International application number: PCT/US2020/035481 (87) International publication number: WO 2021/246997 (09.12.2021 Gazette 2021/49)

(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: 30.05.2020 US 202016888724 (71) Applicant: HRL Laboratories, LLC Malibu, CA 90265-4799 (US)

(72) Inventors: ECKEL, Zak Thousand Oaks, California 91320 (US) NOWAK, Andrew Los Angeles, California 90064 (US) DUSTIN, Ashley Los Angeles, California 90049 (US) RODRIGUEZ, April Los Angeles, California 90066 (US) BUI, Phuong Thousand Oaks, California 91362 (US) SCHAEDLER, Tobias Oak Park, California 91377 (US) (74) Representative: Coles, Andrea Birgit et al Kilburn & Strode LLP Lacon London 84 Theobalds Road London WC1X 8NL London WC1X 8NL (GB)