ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,973, issued on May 26, was assigned to Honda Motor Co. Ltd. (Tokyo).

"Fuel cell system" was invented by Sho Akabori (Wako, Japan) and Takuto Nakagawa (Wako, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fuel cell system includes a fuel cell and a secondary battery used as power sources of a power supply target object, and a control device for controlling driving of the power supply target object. The control device determines whether a predetermined condition required for activation of the fuel cell is satisfied, permits a battery-driven mode in which the power supply target object is driven using only the secondary battery when the predeter...