US 11,921,046 B2
Filter media and system using the same
Richard George Rateick, Jr., South Bend, IN (US); Christopher Evans, Granger, IN (US); Bahram Jadidian, Watchung, NJ (US); Mahdi Mohajeri, Morristown, NJ (US); and Mehrad Mehr, Raleigh, NC (US)
Assigned to Honeywell International Inc., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Aug. 31, 2020, as Appl. No. 17/008,290.
Prior Publication US 2022/0065789 A1, Mar. 3, 2022
Int. Cl. B01D 46/00 (2022.01); B01D 39/20 (2006.01); G01J 3/02 (2006.01); G01J 3/44 (2006.01); G01N 21/65 (2006.01); B01D 39/00 (2006.01)
CPC G01N 21/65 (2013.01) [B01D 39/2051 (2013.01); G01J 3/0229 (2013.01); G01J 3/44 (2013.01); B01D 2239/025 (2013.01); B01D 2239/0442 (2013.01); B01D 2239/0471 (2013.01); B01D 2239/1216 (2013.01)] 20 Claims
OG exemplary drawing
 
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.