ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,420,669, issued on Sept. 23, was assigned to VEHICLE ENERGY JAPAN INC. (Ibaraki, Japan).
"Power supply control device" was invented by Kazutaka Nishiwaki (Ibaraki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power supply control device is applied to a vehicle equipped with electrical equipment, a relay connected to the electrical equipment, a first power supply that makes the relay operable, and a second power supply that discharges electricity to the electrical equipment via the relay. The device includes: a DC/DC converter that supplies electric power from the second power supply to the relay, serving as a backup for the first power supply...