Granted Patent B2

US 12,492,292 · App. 18/297,187 · Granted Dec 9, 2025

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

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

C08J9/008B29C48/08C08J9/0085F01N3/0226B29K2023/06B29K2023/12B29K2067/046C08J2323/06

Abstract

Claims (24)

1 . A polymeric sheet comprising:

at least one polymer layer having one or more apertures for flow of gas or liquid therethrough, wherein the apertures are hexagonal, square or diamond shaped; and

a plurality of nanoparticles disposed within the polymer layer, wherein the nanoparticles have at least one dimension less than 1 micron.

2 . The sheet of claim 1 , wherein the polymer layer has a first surface and a second surface opposite the first surface, wherein at least a portion of the nanoparticles are disposed between the first surface and the second surface.

3 . The sheet of claim 1 , wherein the polymer layer is an extruded film.

4 . The sheet of claim 1 , wherein the apertures comprise pores or perforations.

5 . The sheet of claim 1 , wherein the polymer layer is selected from a group consisting of a polypropylene film, a high density polyethylene film, and a polylactic acid film.

6 . The sheet of claim 1 , further including a mesh, netting, fabric, knit or weave.

7 . The sheet of claim 1 , wherein the polymer layer is a substantially rigid support layer for a gas filter.

8 . The sheet of claim 1 , wherein the polymer layer is co-extruded to form an adhesive bonding layer.

9 . The sheet of claim 1 , wherein the nanoparticles are substantially uniformly dispersed throughout the polymer layer.

10 . The sheet of claim 1 , wherein the polymer layer comprises fibers having an electrostatic charge.

11 . A gas filter comprising:

a filter media; and

a substantially rigid support layer bonded to the filter media, wherein the support layer includes fibers and a plurality of nanoparticles disposed within the support layer, wherein the nanoparticles have at least one dimension less than 1 micron, wherein the support layer comprises at least one extruded polymer film having one or more apertures for flow of gas or liquid therethrough.

12 . The gas filter of claim 11 , wherein the nanoparticles are configured to filter contaminants passing through the support layer.

13 . The gas filter of claim 11 , wherein the polymer film has a first surface and a second surface opposite the first surface, wherein at least a portion of the nanoparticles are disposed between the first and second surfaces.

14 . The gas filter of claim 11 , wherein the apertures comprise pores or perforations.

15 . The gas filter of claim 11 , wherein the apertures are hexagonal, square, oblong, circular, triangular, rectangular or diamond shaped.

16 . A composite material, comprising:

a substrate having pores within an internal structure, wherein the pores are hexagonal, square or diamond shaped;

a plurality of nanoparticles within the internal structure of the substrate, the nanoparticles having at least one dimension less than 1 micrometer; and

wherein the nanoparticles form a gradient within the substrate such that a density of the nanoparticles decreases from a first surface to an opposing second surface of the substrate.

17 . The composite material of claim 16 , wherein the nanoparticles extend below an outer surface of the substrate by a distance of between about 1 millimeter and about 3 millimeters.

Assignments (2)

Continuity (2)

References Cited (154)