# US 10,245,538 B2 · Filtering panel for the passive filtering of air and gases > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,245,538 B2 - Document ID: US10245538B2 - Status: Granted - Kind: B2 - Application number: 14/906,499 - Filed: 2014-07-23 - Published: 2016-06-02 - Granted: 2019-04-02 - Earliest claimed: 2013-07-24 - Assignees: Anemotech S.R.L. - Applicants: Anemotech S.R.L. - Inventors: Gianmarco Cammi; Marino Cavaion - Web page: https://patentgrep.com/patent/US10245538B2 ## CPC - B01D 39/1623: {of synthetic origin} - B01D 39/163: {sintered or bonded} - B01D 46/0036: {by adsorption or absorption} - B01D 46/10: Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces - B01D 2239/0407: comprising particulate additives, e.g. adsorbents - B01D 2239/0414: Surface modifiers, e.g. comprising ion exchange groups - B01D 2239/0442: Antimicrobial, antibacterial, antifungal additives - B01D 2239/065: More than one layer present in the filtering material - B01D 2239/1216: Pore size - B01D 2252/00: Absorbents, i.e. solvents and liquid materials for gas absorption - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) ## Abstract Filtering panel 100 for passively adsorbing micro particles such as atmospheric pollutants or the like, the panel having a first outer layer 10, a second outer layer 30 and an intermediate filtering layer 20 arranged between the first and second outer layers 10 and 30, the intermediate filtering layer 20 having a support structure impregnated with porous active carbons, where at least one of the outer layers 10 and 30 is optionally suitable for painting and/or coloring and/or printing, the panel 100 being therefore suitable for use for displaying information and/or directions, for example of an advertising or commercial nature, as well as an urban, extra-urban and domestic design element. ## Claims ### Claim 1 A filtering panel configured for the passive adsorption, by natural non-forced convection, of micro particles such as atmospheric pollutants or the like, said panel comprising a first outer layer, a second outer layer and an intermediate filtering layer arranged between said first and second outer layers, said intermediate filtering layer comprising a support structure impregnated with porous active carbons, wherein said support structure of said intermediate filtering layer is composed of heat-welded polyester fibres, wherein a weight per square meter of said active carbons is equal to 50% of a weight per square meter of said support structure, and wherein said support structure has a weight of 280 g. per square meter, and an exposed surface area of said active carbons has a value up to 280,000 square meters per square meter of said intermediate filtering layer. ### Claim 2 (depends on 1) The filtering panel according to claim 1, wherein at least the first of said first and second outer layers is made of polyester or polypropylene. ### Claim 3 (depends on 2) The filtering panel according to claim 2, wherein said at least one outer layer is made with a cellular structure. ### Claim 4 (depends on 2) The filtering panel according to claim 2, wherein said second outer layer is formed by a polyester mesh suitable for colouring and/or printing so as to display street directions, commercial information and/or advertising information and/or communications in general. ### Claim 5 (depends on 1) The filtering panel according to claim 1, wherein said first and second outer layers are fixed together along respective perimeters so as to define an internal space and in that said intermediate filtering layer is freely housed inside said internal space without being fixed to the first outer layer or the second outer layer. ### Claim 6 (depends on 5) The filtering panel according to claim 5, wherein said first and second outer layers are fixed together in a permanent and definitive manner. ### Claim 7 (depends on 6) The filtering panel according to claim 6 wherein said first and second outer layers are fixed together by means of stitching or heat-welding. ### Claim 8 (depends on 5) The filtering panel according to claim 5, wherein said first and second outer layers are fixed together in a non-permanent or removable manner. ### Claim 9 (depends on 8) The filtering panel according to claim 8, wherein said first and second outer layers are fixed together by hook and loop strips applied to said first and second outer layers. ### Claim 10 (depends on 9) The filtering panel according to claim 9, wherein said hook and loop strips are applied by stitching or heat-welding. ### Claim 11 (depends on 5) The filtering panel according to claim 5, wherein said intermediate filtering layer is fixed to one of said first and second outer layers in a permanent and definitive manner by means of stitching or heat-welding. ### Claim 12 (depends on 5) The filtering panel according to claim 5, wherein said intermediate filtering layer is fixed to one of said first and second outer layers in a non-permanent or removable manner by hook and loop strips. ### Claim 13 (depends on 1) The filtering panel according to claim 1, wherein said active carbons are treated using titanium dioxide, silver nitrate or using anti-bacterial, hydrophobic and/or fireproofing treatments. ### Claim 14 (depends on 1) The filtering panel according to claim 1, wherein the first outer layer, the second outer layer and the intermediate filtering layer combine to form a flat and planar display panel, graphics being formed on one of the first outer layer or the second outer layer. ### Claim 15 (depends on 14) The filtering panel according to claim 14, wherein graphics comprise street directions, commercial information or advertising information. ### Claim 16 (depends on 1) A panel assembly comprising: the filtering panel as recited in claim 1, wherein the filtering panel has an outer perimeter edge; and a support frame at least partially encircling an opening, the filtering panel being flat and planar and disposed within the opening of the support frame, the perimeter edge of the filtering panel being secured to the support frame. ### Claim 17 (depends on 16) The panel assembly as recited in claim 16, wherein the filtering panel and the support frame are both rectangular. ### Claim 18 (depends on 1) The panel assembly as recited in claim 1, wherein at least a portion of the filtering layer is not secured to the first outer layer or the second outer layer.