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EP 4 816 764 A1

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(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24828568.6 (22) Date of filing: 26.11.2024

(51) International Patent Classification (IPC):  F42B 5/03(2006.01) F42B 14/06(2006.01) F42B 7/08(2006.01) F41H 11/02(2006.01) F42B 12/58(2006.01) F42B 7/04(2006.01) F42B 7/10(2006.01) (52) Cooperative Patent Classification (CPC): F42B 7/04; F42B 7/08; F42B 7/10; F42B 12/58; F41H 11/02; F42B 5/03; F42B 14/065 (86) International application number: PCT/US2024/057462 (87) International publication number: WO 2025/117545 (05.06.2025 Gazette 2025/23)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 27.11.2023 US 202363602855 P (71) Applicant: Naval Research Laboratory Arlington, VA 22203 (US)	(72) Inventors: HOFFMAN, Brian Bloomington, IN 47401 (US) MCGEE, Caleb Bloomington, IN 47403 (US) WALTON, Cody Bloomington, IN 47401 (US) (74) Representative: Valet Patent Services Limited  c/o Caya 83713X Am Börstig 5 96052 Bamberg 96052 Bamberg (DE)