	US 11,712,667 B2
	Anti-microbial metal coatings for filters
Ashok K. Sharma, Hopkins, MN (US); and Stephen P. Conover, Minneapolis, MN (US)
Assigned to Applied Membrane Technology, Inc., Minnetonka, MN (US)
Filed by Applied Membrane Technology, Inc., Minnetonka, MN (US)
Filed on Mar. 23, 2021, as Appl. No. 17/209,970.
Prior Publication US 2022/0305444 A1, Sep. 29, 2022
Int. Cl. B01D 69/02 (2006.01); A61L 9/014 (2006.01); C02F 1/44 (2023.01); C02F 1/50 (2023.01); C23C 22/06 (2006.01); C23C 22/76 (2006.01); A61L 2/238 (2006.01); A61L 101/26 (2006.01); A61L 15/44 (2006.01); A61L 15/18 (2006.01); B01D 71/02 (2006.01); B01D 67/00 (2006.01); A61L 15/20 (2006.01)

CPC B01D 69/02 (2013.01) [A61L 2/238 (2013.01); A61L 9/014 (2013.01); B01D 67/009 (2013.01); B01D 67/0093 (2013.01); B01D 71/022 (2013.01); C02F 1/44 (2013.01); C02F 1/50 (2013.01); C23C 22/06 (2013.01); C23C 22/76 (2013.01); A61L 15/18 (2013.01); A61L 15/20 (2013.01); A61L 15/44 (2013.01); A61L 2101/26 (2020.08); A61L 2209/14 (2013.01); B01D 2325/48 (2013.01); C02F 2303/04 (2013.01)]

12 Claims

1. A method for coating a substrate with a metal, said method comprising:

(a) applying a metal solution to the substrate, wherein the metal solution includes:

(i) a solvent, and

(ii) a metal component selected from one or more organic or inorganic metal salts or one or more organometallic complexes of metal,

wherein the substrate is wettable by the solvent, and the metal component is soluble in the solvent, such that the metal component is absorbed on the substrate;

(b) subsequent to step (a), reacting at ambient temperature the metal solution at the substrate with a conversion agent to form a metal hydroxide or a metal oxide; and

(c) exposing the metal hydroxide or metal oxide at the substrate to a plasma environment at ambient temperature and less than 100 KPa pressure to reduce the metal hydroxide or metal oxide to a metal coating at the substrate.