ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,749,695, issued on Sept. 29, was assigned to Hyundai Motor Co. (Seoul, South Korea) and Kia Corp. (Seoul, South Korea).

"Hydrogen leak sensing device and method for fuel cell vehicle" was invented by Hae Pin Choi (Hwaseong, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "In one aspect, disclosed are a hydrogen leak sensing device and method for a fuel cell vehicle. The device comprises a processor configured to control a valve of a hydrogen tank, wherein the processor may calculate a state of fuel (SOF) of the hydrogen tank when the valve is closed and a SOF of the hydrogen tank when the valve is opened, and determine whether hydrogen leak h...