ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,465, issued on Dec. 30, was assigned to Asahi Kasei Microdevices Corp. (Tokyo).

"Gas detection device" was invented by Takaaki Furuya (Tokyo), Akinori Itabashi (Tokyo) and Hans Martin (Delsbo, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a gas detection device that is compact and can perform accurate measurement. The gas detection device includes a light-emitting section (10), a light-receiving section (20), and a light-guiding section (30) that guides light from the light-emitting section (10) to the light-receiving section (20). The light-guiding section (30) includes a mirror (50) and has a shape of part of at least one spher...