ALEXANDRIA, Va., June 17 -- United States Patent no. 12,316,093, issued on May 27, was assigned to Sumitomo Wiring Systems Ltd. (Yokkaichi, Japan).
"Power supply system having a circuit for detecting a ground fault" was invented by Robert Grooms (Farmington Hills, Mich.) and Vibhor Singh (Farmington Hills, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power supply system and a control circuit for a power supply system are provided. The power supply system includes a first battery, a second battery, a first switch and a second switch are operable to control power supply from the first and second battery by turning on and off. The control circuit includes a third switch. A drain of the third switch is...