ALEXANDRIA, Va., June 18 -- United States Patent no. 12,326,459, issued on June 10, was assigned to Hitachi High-Tech Corp. (Tokyo).
"Automatic analyzer" was invented by Yuki Yokota (Tokyo), Koshin Hamasaki (Tokyo) and Yoshihiro Yamashita (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an automatic analyzer in which an abnormality of a flow path including malfunction of an electromagnetic valve or a pressure change portion can be detected using an existing sensor that measures a liquid amount in a container. A syringe 103, a first electromagnetic valve 104, and a second electromagnetic valve 105 are operated such that a predetermined liquid aspirating and discharging operation is performed ...