An infection control device includes a plurality of air inlets spaced around the device's peripheral skirt. A negative ion ozone generator having a plurality of spaced pointed projections is inwardly of the peripheral skirt with a ground disk inwardly of the generator. Air flows through the inlets to...http://www.google.es/patents/US7731914?utm_source=gb-gplus-sharePatente US7731914 - Ozone infection control device
