ALEXANDRIA, Va., March 24 -- United States Patent no. 12,586,803, 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; a solenoid valve that changes an opening degree of the hydrogen gas supply passage; a pressure sensor that detects a pressure in a downstream supply passage being a part of the hydrogen gas supply passage from the solenoid valve to the fuel cell; and a control circuit. The control circuit detects a rise in the pressure detected by the pressure sensor ...