ALEXANDRIA, Va., July 28 -- United States Patent no. 12,691,493, issued on July 28, was assigned to MITSUI KINZOKU COMPANY Ltd. (Japan).
"Hydrogen storage alloy" was invented by Keisuke Miyanohara (Takehara, Japan) and Kyohei Yamaguchi (Takehara, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ABs-type hydrogen storage alloy is provided that has a low Co amount and uses Mm composed of La and Ce, which is capable of preventing a decrease in lifetime characteristics. The hydrogen storage alloy has an ABx composition constituted with an A-site composed of an Mm and a B-site composed of Ni, Co, Mn, and Al, or Ni, Mn, and Al, wherein Mm is composed of La and Ce; the molar ratio of Co is 0.0 or more and 0....