ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,491, issued on Nov. 18, was assigned to Canon K.K. (Tokyo).

"Detector for radioactive ray" was invented by Fumiaki Mizutani (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A detector includes: a first member that detects a radioactive ray; a second member located around the first member; a third member having a first opening overlapping at least a part of a first region on which the first member is projected in a planar view including the first member and the second member; a fourth member having a second opening overlapping at least a part of the first region in the planar view and having higher thermal conductivity than the third m...