US 12,228,310 B2
Apparatus for processing air in an indoor environment
Chi Keung Lai, Kowloon (HK)
Assigned to CITY UNIVERSITY OF HONG KONG, Kowloon (HK)
Filed by CITY UNIVERSITY OF HONG KONG, Kowloon (HK)
Filed on Jul. 9, 2021, as Appl. No. 17/371,817.
Claims priority of provisional application 63/050,179, filed on Jul. 10, 2020.
Prior Publication US 2022/0010992 A1, Jan. 13, 2022
Int. Cl. A61L 2/10 (2006.01); F24F 7/007 (2006.01); F24F 8/22 (2021.01)
CPC F24F 8/22 (2021.01) [F24F 7/007 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of disinfecting indoor air in a room occupied by at least one person comprising the steps of:
providing a source of germicidal electromagnetic radiation in the room;
locating the source at a height over the head of the at least one person;
the source emitting a beam of germicidal electromagnetic radiation at an upward angle onto the overhead space in the room;
moving or rotating the germicidal electromagnetic radiation across the overhead space while maintaining the beam at an upward angle so as not to project downwardly into an eye of the at least one person.