Granted Patent B2

US 12,491,458 · App. 18/297,188 · Granted Dec 9, 2025

Inventors: Andrew G. Platt (Middletown, DE); Lenny Pompeo (Middletown, DE)

Assignees: DelStar Technologies, Inc.; LMS Technologies, Inc.

B01D39/163B01D2239/0216B01D2239/0258B01D2239/0435B01D2239/0609B01D2239/086B01D2239/10B01D2239/1291

Abstract

Claims (19)

1 . A filter comprising:

a substrate comprising fibers;

nanoparticles disposed within the substrate, wherein the nanoparticles are disposed within the substrate from a first surface throughout the substrate to a second surface opposite the first surface;

wherein the fibers have a linear density of about 3 denier or greater; and

wherein at least one of the fibers or the nanoparticles are electrostatically charged.

2 . The filter media of claim 1 , wherein the fibers are electrostatically charged.

3 . The filter media of claim 1 , wherein the nanoparticles are electrostatically charged.

4 . The filter media of claim 1 , wherein the substrate comprises a triboelectric filter media.

5 . The filter media of claim 1 , wherein the nanoparticles form a gradient within the substrate such that a density of the individual nanoparticles decreases from a first surface to a second surface opposite the first surface.

6 . The filter media of claim 1 , wherein the nanoparticles are substantially uniformly dispersed throughout the fibrous substrate.

7 . The filter media of claim 1 , further comprising a binding agent within the fibrous material binding the nanoparticles to the fibers.

8 . An air filter product comprising the filter media of claim 1 .

9 . A filter media comprising:

a substrate comprising fibers and nanoparticles, wherein the fibers have a linear density of greater than about 3 denier;

wherein the substrate mechanically filters contaminants; and

wherein the substrate electrostatically filters contaminants.

10 . The filter media of claim 9 , wherein the nanoparticles mechanically filter contaminants.

11 . The filter media of claim 9 , wherein the fibers are electrostatically charged.

12 . The filter media of claim 9 , wherein the nanoparticles are electrostatically charged.

Assignments (3)

Continuity (2)

References Cited (155)