US 12,246,837 B2
Antimicrobial surface treatment systems and methods for aircraft faucets
Jin Hu, Hudson, OH (US); and Phi Doan, Lewisville, TX (US)
Assigned to GOODRICH CORPORATION, Charlotte, NC (US)
Filed by GOODRICH CORPORATION, Charlotte, NC (US)
Filed on Nov. 18, 2021, as Appl. No. 17/529,443.
Claims priority of provisional application 63/127,784, filed on Dec. 18, 2020.
Prior Publication US 2022/0194588 A1, Jun. 23, 2022
Int. Cl. B64D 11/02 (2006.01); A01N 33/12 (2006.01); B05D 3/02 (2006.01); B05D 3/10 (2006.01); B05D 5/00 (2006.01); C23C 22/50 (2006.01); C23G 1/08 (2006.01); E03C 1/084 (2006.01)
CPC B64D 11/02 (2013.01) [A01N 33/12 (2013.01); B05D 3/0272 (2013.01); B05D 3/102 (2013.01); B05D 5/00 (2013.01); C23C 22/50 (2013.01); C23G 1/081 (2013.01); B05D 2202/15 (2013.01); E03C 1/084 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A method of manufacturing an aircraft metallic faucet with a grafted anti-microbial molecular layer, the method comprising:
disposing the aircraft metallic faucet in a piranha solution;
washing the aircraft metallic faucet; and
grafting a surface of the aircraft metallic faucet with a reactive silane quaternary ammonium ion-based (“Si-Quat”) molecular layer comprising forming a covalent M-O—Si bond, wherein M represents a metal atom of a metal substrate of the aircraft metallic faucet, wherein the Si-Quat molecular layer is a single quat thick, wherein:
the grafting the surface further comprises soaking the surface in a Si-Quat solution, and washing away an unreacted portion of the Si-Quat solution, and
the Si-Quat solution comprises approximately 1% (MeO)3—Si-Quat with a pH between 2 and 3.