ALEXANDRIA, Va., July 7 -- United States Patent no. 12,674,847, issued on July 7, was assigned to MURATA MANUFACTURING Co. LTD. (Kyoto, Japan).

"Method and apparatus of performing failure detection on ac input voltage, and power supply system" was invented by Chukhung Chan (Hong Kong), Chuipong Liu (Hong Kong) and Kwokwai Lo (Hong Kong).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of performing a failure detection on an AC input voltage includes comparing the AC input voltage with first and second reference voltages, determining that the AC input voltage is normal, if an absolute value of the AC input voltage is greater than the first reference voltage, determining that the AC input voltage has fai...