ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,746,509, issued on Sept. 29, was assigned to Dyson Technology Ltd. (Malmesbury, Great Britain).

"Photocatalytic air treatment" was invented by Mark Kristof Detre (Bristol, Great Britain) and Kenneth Mark Armstrong (Bristol, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a photocatalytic reactor including a reaction chamber. The reaction chamber includes a first set of fins, a second set of fins, a photo-catalyst disposed upon at least one face of each fin, and a light source arranged to illuminate at least a portion of the photo-catalyst disposed on each fin. Each of the first set of fins is arranged such that a line ext...