ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,433,987, issued on Oct. 7, was assigned to OTSUKA ELECTRONICS Co. LTD. (Hirakata, Japan).

"Photodynamic therapy device" was invented by Shinpei Kajiwara (Hirakata, Japan) and Fumito Kikuchi (Hirakata, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A photodynamic therapy device of this disclosure includes: a light emitting unit (112, 112) including light sources (110) each belonging to any one of groups; a photodetector (120X, 120Y) configured to output an electrical signal corresponding to an amount of light received from the light sources (110); a light emission control unit (160) configured to sequentially cause the light sources (110) to emit li...