ALEXANDRIA, Va., March 24 -- United States Patent no. 12,586,802, issued on March 24, was assigned to TOYOTA JIDOSHA K.K. (Toyota, Japan) and AISAN KOGYO K.K. (Obu, Japan).
"Fuel cell system" was invented by Daisaku Asanuma (Gamagori, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fuel cell system may include a fuel cell; a hydrogen gas supply passage configured to supply hydrogen gas to the fuel cell; a solenoid valve configured to change an opening degree of the hydrogen gas supply passage; a pressure sensor configured to detect a pressure in a downstream supply passage which is a part of the hydrogen gas supply passage from the solenoid valve to the fuel cell; and a control circuit configured to c...