ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,660, issued on Sept. 1, was assigned to Kawasaki Jukogyo K.K. (Kobe, Japan).
"Hydrogen gas valve device and hydrogen gas valve body equipped therewith" was invented by Tomoya Hayase (Kobe, Japan), Makoto Ninomiya (Kobe, Japan) and Masayoshi Okamoto (Kobe, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydrogen gas valve device for controlling a flow of hydrogen gas, the hydrogen gas valve device including a valve body; and a housing that includes a valve port through which hydrogen gas flows, a valve seat around the valve port, and an inner wall surface into which the valve body is inserted and is made of aluminum, chrome-molybdenum steel, o...