Patent ID: 9616145
Date: 2017-04-11
CPC Classifications: A61L

Claim:
1. A process of combating bacteria in an enclosed space within a room and contained in biofilm on surfaces within the room, the process conducted in the room at atmospheric pressure and consisting of: creating in the room at atmospheric pressure, a disinfecting atmosphere which includes ozone at a concentration of 2-350 ppm by weight and hydrogen peroxide at an amount of 0.2-10 wt. %, at a relative humidity of at least 60%, wherein said amount of hydrogen peroxide is derived from a supply solution of 0.2-10% hydrogen peroxide, wherein the disinfecting atmosphere is moved about the room; subjecting the biofilm, including at least biofilm carrying surfaces having live bacteria therein, to said disinfecting atmosphere at atmospheric pressure for a period of time effective to cause substantial kill, by at least a 6 log reduction, of the bacteria in the biofilm, the period of time being at least 30 minutes, wherein the step of moving the disinfecting atmosphere about the room is suspended for up to about 60% of said period of time; and subsequently removing ozone from the disinfecting atmosphere, down to 0.04 ppm or less and removing hydrogen peroxide from the disinfecting atmosphere down to less than 1.00 ppm or less.