Patent ID: 9393350
Filing Date: 2016-07-19
CPC Classification: A61L,C02F,C23C

Claim Text:
1. A method for producing an adherent, antimicrobial coating, comprising: depositing a first layer of ion plasma produced metal and metal oxide nanoparticulates on a substrate in a vacuum chamber, said first layer consisting of metal and metal oxide nanoparticulates substantially free of macroparticulates; depositing a second layer of ion plasma from an ion plasma source to produce metal and metal oxide macroparticulates over the first layer, said second layer consisting of mixed sizes of metal and metal oxide medium size macroparticulates ranging from 100 nm up to about 1 micron; irradiating the nanoparticulates and macroparticulates during ion plasma deposition with ultraviolet light (UV) from a separate source located in the vacuum chamber to activate ground state oxygen in the metal oxide plasma to a reactive oxygen species thereby providing an antimicrobially active coating on the substrate that is enhanced compared with the coating deposited without UV irradiation from the separate source during ion plasma deposition.