ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,768,468, issued on Oct. 20, was assigned to Beckman Coulter Inc. (Brea, Calif.).

"Solenoid valve monitor using hall effect sensors" was invented by Masayuki Osako (Shizuoka Prefecture, Japan) and Noriyuki Ito (Shizuoka Prefecture, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are systems and methods for detecting a malfunction in an automated analyzer. The systems and methods may include receiving a signal from a sensor (116), such as a Hall effect sensor located proximate a coil (104) of a solenoid valve (100). The signal from the sensor may be correlated to a magnetic flux or change in the magnetic flux generated as a plunger (102) of...