US 11,930,867 B2
Coated substrates and articles with anti-viral properties, and fabrication processes
Andrew R. Barron, Swansea (GB); Iain Powner, Newcastle Under Lyme (GB); Wafaa Al-Shatty, Swansea (GB); Donald A. Hill, London (GB); Sajad Kiani, Swansea (GB); Andrius Stanulis, Swansea (GB); Lee Tretheway, Newcastle Under Lyme (GB); Shirin Alexander, Swansea (GB); and Steve Winston, London (GB)
Assigned to FXI INC. LIMITED, London (GB)
Filed by FXI INC. LIMITED, London (GB)
Filed on May 7, 2021, as Appl. No. 17/314,874.
Claims priority of provisional application 63/058,550, filed on Jul. 30, 2020.
Prior Publication US 2022/0034025 A1, Feb. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A41D 13/11 (2006.01); A01N 25/08 (2006.01); A01N 25/34 (2006.01); A01N 59/16 (2006.01); A62B 23/02 (2006.01); D06M 11/83 (2006.01); D06M 23/08 (2006.01); D06M 101/32 (2006.01)
CPC A41D 13/1192 (2013.01) [A01N 25/08 (2013.01); A01N 25/34 (2013.01); A01N 59/16 (2013.01); A62B 23/025 (2013.01); D06M 11/83 (2013.01); D06M 23/08 (2013.01); A41D 2500/30 (2013.01); D06M 2101/32 (2013.01); D06M 2200/00 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A filter for reducing transmission of a virus therethrough, the filter comprising:
a coated substrate comprising:
a non-woven fabric having a weight from about 15 g/m2 to about 120 g/m2 according to ASTM D3776;
mineral oxide particles coated on the non-woven fabric and derived from a solution or suspension comprising about 0.5 wt % to about 5 wt % mineral oxide particles; and
iron oxide particles coated on the non-woven fabric and derived from a solution or suspension comprising about 0.5 wt % to about 5 wt % iron oxide particles, wherein the mineral oxide particles, the iron oxide particles, or both are functionalized with an organic functional group, wherein the mineral oxide particles are different from the iron oxide particles, and wherein about 90% or more of aspirated virus-sized particles are prevented from transmitting through the filter.