Patent No. EP4390299 (titled "Ignition Component Of A Le-Efi Ignition Module") was filed by Diehl Defence on Dec 5, 2023. The application was issued on Oct 8, 2025.
EFI detonation component using a hard ceramic substrate to eliminate energy loss from air gaps and adhesives. A metal bridge is vapor-deposited directly onto the substrate, followed by a spin-coated plastic layer that is heat-treated for strength. This rigid base acts as an anvil, ensuring all explosive energy accelerates the flyer without loss. The design allows ignition at lower voltages while maintaining safety and timing precision.

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