ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,417, issued on Dec. 16, was assigned to SEKISUI HOUSE LTD. (Osaka, Japan).
"Power supply system" was invented by Motoyoshi Karube (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An electric power supply system includes: a first electric power supply part that utilizes a commercial electric power supply source; a second electric power supply part that utilizes a vehicle battery or other supply source; a third electric power supply part that utilizes a fuel cell; a fourth electric power supply part that utilizes photovoltaic electric power generation; a first electric power supply line for supplying electric power to an important applianc...