Kronos Advanced Technologies Inc. manufactures, distributes, and licenses air movement and purification devices in the United States. The company offers air purifiers and masks. It markets and sells products directly through its website, 1800safeair.com, as well as through independent sales representatives. It also develops nuclear battery solutions for aerospace, defense, and medical sectors. The company was formerly known as TSET, Inc. and changed its name to Kronos Advanced Technologies Inc. in January 2001. Kronos Advanced Technologies Inc. was incorporated in 1980 and is headquartered in Parkersburg, West Virginia.