ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,468, issued on Sept. 23, was assigned to FUJIKIN Inc. (Osaka, Japan).
"Concentration measurement device" was invented by Masaaki Nagase (Osaka, Japan), Keiichi Hasegawa (Osaka, Japan), Kouji Nishino (Osaka, Japan) and Nobukazu Ikeda (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A concentration measurement device 20 for measuring the concentration of the a gas flowing through a junction block 14 connected to a plurality of gas supply lines includes a light source 40 for generating light incident to a flow path formed in the junction block, a photodetector 44 for receiving light emitting from the flow path, and an arithmetic control ci...