Sintered porous body with multiple layers

This invention describes a filter made from multiple layers of sintered metal particles. It has a coarse inner layer made of larger metal particles and a fine outer layer made of tiny nanoparticles, all fused together by heating. The claims specifically describe this filter as being shaped like a tube, designed to separate different substances.

Why it matters: Filed recently, so no major shifts. However, continuous advancements in multi-material additive manufacturing for metals could simplify fabricating these precise, layered tubular structures.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedSintering furnace, nanoparticles, tubular forming equipment.

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