ALEXANDRIA, Va., June 25 -- United States Patent no. 12,337,149, issued on June 24, was assigned to Nemoto Kyorindo Co. Ltd. (Tokyo).

"Injection head and chemical injection device comprising same" was invented by Shigeru Nemoto (Tokyo), Yumiko Fukikoshi (Tokyo), Toshio Kanetaka (Tokyo) and Yasufumi Saitoh (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A chemical-liquid injection head including a syringe holding unit which holds a syringe in which a piston member is slidably inserted into a cylinder member having a circular cylindrical shape, a piston driving mechanism having a ram member for moving the piston member of the syringe, and a first light emitting portion which emits light with a first colo...