Patent ID: 11921046
Assignee: HONEYWELL INTERNATIONAL INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A method of making a filter, the method comprising:
heating a metal substrate comprising a metal alloy to precipitate a first phase out from a second phase on a surface of the metal substrate, wherein the metal substrate defines a plurality of apertures configured to allow a gas to pass through the apertures, wherein the metal substrate comprises the metal alloy, wherein the metal alloy comprises a first metal and a second metal, wherein the first phase comprises a gamma prime phase of nickel or cobalt, wherein the gamma prime phase of the nickel or the cobalt is part of a structure of the metal substrate; and
growing a plurality of carbon nanotubes (CNTs) on the surface of the first metal of the first phase, wherein the CNTs are configured to capture at least one particle.