ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,064, issued on Dec. 2, was assigned to BAE Systems PLC (London).

"Lightweight end cap" was invented by Nathan William Rowe (Crewe, Great Britain), Joshua Matthew Stubbs (Crewe, Great Britain), Paul Heaton (Crewe, Great Britain) and Richard James Duncombe (Farnborough, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method of improved ammunition production, more specifically to a cellular structure end cap, suitable for an ammunition round, said end cap comprising a porous 3D spatial structure in the shape of said end cap, wherein in said porous 3D spatial structure comprises a surface skin."

The patent was fil...