ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,411,079, issued on Sept. 9, was assigned to Asahi Kasei Microdevices Corp. (Tokyo).
"Gas detection apparatus" was invented by Shota Isshiki (Tokyo), Keiichiro Kuwata (Tokyo) and Yuji Ikeda (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A small-sized gas detection apparatus with high measurement accuracy is provided. The gas detection apparatus includes a light emitting portion (1); a light receiving portion (2); a first mirror (3) that has a quadric reflective surface and reflects light emitted from the light emitting portion; and a second mirror (4) that has a quadric reflective surface and reflects the light reflected by the first mirro...